Im mostly concerned with the nearby lambs exposed to around 120 db of jet noise. I did not see them out there at run time however so I guess they are taken inside before a run so they are not direclty exposed to the deafening noise.
👍🏻 PERFECT for use as a home standby Generator…. With HOURLY “self tests”! That SHOULD teach the tyrants in charge a great lesson. Ban all small gasoline fueled engines…. ? How about my new JET-A fueled genes T!?! Thanks for a very entertaining video.
A sight to behold and music (albeit VERY loud!!) to my ears. Many happy years as an aircraft engineer playing with BAC 1-11 aircraft, including the RR Spey and GTCP85. Great video 👏🏻👏🏻👏🏻
9kVA is pretty common for aircraft generators, with the APU being driven directly at a constant speed with the frequency at a nominal 400Hz whilst the main engines obviously change rotational speed significantly so the gen is maintained at 400Hz using a Constant Speed Drive unit (CSD) on older aircraft or an Integrated Drive Generator (IDG). You're right about fuel types...you could probably run a gas turbine engine on sawdust or even flour if you could grind it down fine enough. You know what happens to flour mills when you get a spark!
@@richardpiotrowski2118 Something as nice as a Glenlivett shouldn't ever be allowed because there are millions of gallons of Bells available as fuel! 😁
A sight to behold and music (albeit VERY loud!!) to my ears. Many happy years as an aircraft engineer playing with BAC 1-11 aircraft, including the RR Spey and GTCP85. Great video 👏🏻👏🏻👏🏻
A 300 hp gas rurbine would put out at least 100,000 watts. But it's main mission is to start the bigger engines on the plane using airflow as as a starter motor that make 12,0000+ hp each
Yup, they do 2 things. Provide electrical power so the startup sequence for the engines doesn't have to rely solely on the batteries, and they supply high pressure (or high flow, forgot which it was) that powers the starters on the main engines.
Yes and no. Many bigger airports have ground starting units to provide electricity and pressure so the APU doesn't need to run (noise reasons). On the other hand an APU gives you a huge security margin when you lose an engine to stabilize the electrical aystem and to have power to supply electricity to all avionic systems in case the second engine fails, too. You don't need the RAT then.
This particular APU looks like the thing they installed in the wheel well of a 727. Back in the day, I had a mechanic show me HOW to get the APU to run while the airplane was flying; This was an ultra ultra EMERGENCY procedure, because a running APU WOULD BURN THE TOP OF THE RIGHT WING ROOT. If you lost all your generators for some reason, you could pull down the APU panel, pull two wires off, and when connected, if the gear was down the APU would fire up. Again, an ULTRA EMERGENCY procedure and I certainly would NEVER NEVER tell a Fed/check airman about this.....But it CAN be done.
@@JCarey1988 Lose all your generators due to whatever; You are now down to standby power, powered by the battery, which will last you oh, about 30 minutes. You are flying in IFR conditions. Do you have any other stupid questions?
@@JCarey1988 The exhaust from the APU was carried via a duct to an outlet on the upper wing surface near the root , with a grate to prevent big FOD items from falling in to the APU. Originally designed with a door, but those were a major problem for dependaility and almost all were subsequently removed.
@@Flies2FLL No need to be rude. WIth it's three completely independent electrical systems, it would almost certainly take a three- engine-failure event to lose all electric power, and with that, you haven't got thirty minutes to sort that out.
@@paulcrumley9756 First of all, there are four independent electrical systems, with standby power the fourth and final system. You are down to battery power at this point. Loss of all generators can and has been caused by what is known as a feeder fault. If one of the main electrical lines from the generator experiences a major short circuit, it can cause a voltage surge that will knock all three GCU's [generator control units] off line and could possibly damage them, rendering the plane down to standby power. At this point you are not having a good day. You have about 30 minutes of battery time in which to get on the ground. The plane flies just fine without electricals, but you may not have lights, radios, or FLIGHT INSTRUMENTS in short order if you aren't on the ground yesterday.... One other issue that this malfunction can trigger is that once you are safely on the ground, the low beer light may begin flashing brightly. There is no checklist for this issue, the solution is obvious.
Turbine power generators are actually pretty common around the world. They have the advantage that they can run on basically any fuel including gas and diesel. I'm curious, could this run on any fuel? Would that work? hearing protection not optional
Some liquid fuels wouldn't provide enough lubrication for the fuel pump - such as petrol. However, you could mix some oil into the petrol to help with that problem. You'd have to mess around with different air/fuel ratios for each different fuel. All turbines will run on all kinds of fuels - with the right fuel delivery system.
@@brianmurphy8790 I see, interesting that it's the fuel pump. So those turbines that are designed for flex fuels probably have specially designed fuel pumps
I worked on larger Allison 501 industrial engines a long time ago, different fuels may require different nozzles and fuel manifolds depending on the energy density of the fuel. I worked on some dual fuel engines that had liquid fuel and gas fuel systems. The liquid systems normal sized nozzles and standard fuel piping. Low energy gas fuel (Methane) had huge nozzles and an almost doughnut like fuel manifold ring around the engine to admit the larger volume of gas needed fast enough. Add super heated steam re-injection and it gets very complicated in there.
@@smokeandsteamxsw9831 - No it will not... 400 is no more dangerous than 50 or 60. I don't know where you got that idea, but all the electronics you have with switching power supplies, the lamp dimmers, and most other things are OK on 400 hz. Transformers in some cases do not like it and motors try to sync up with the frequency so AC fans and some washing machines are not OK with it. But for running lights and electronics and motorized things that utilize a switching power supply? Bullocks. Its back to school my son.
I wish I had one of these. Because I would actually legitimately use it for something. I’ve had this idea for an awesome long range RC boat for so long and one of those would be so amazing for it.😩
Great in sense of flexibility because you kinda can run many different fuels. You can insultate this engines quite good because the noise frequency is very high.
Justin Our contest group are on the lookout for a nice compact quiet generator to power our station during next month's VHF national field day. I'm sure one of these would fit the bill very nicely:-) 73 de Steve M0KOV
I'd use it for maaaaany things... - The exhaust of the APU can be used for a gasifier that can generate syngas for feeding the APU - The pneumatic bleed can be used of another processes (smelting?) - Also the exhaust can feed a steam cycle... The possibilities are infinite...
Nice video. Do you by chance have access to the GTCP36-6 maintenance and parts manuals. I have a surplus APU that i would like to get running for a project.
In a diesel generator an old rule of thumb is 1/2 pint per KVA per hour at full load for a fairly modern turbocharged diesel engine. I wonder what the consumption is with this? I ran lots of Cummins KTA 50 engines in the desert on JP8. We had 20X 50 liter 1250KVA units running in a synchronized plant in various locations.
It sounds very like the jet engines running the ambulance helicopter which used to land at a hospital almost next to where I used to reside for work purposes. One thing I noticed is that they would never just shut down the engines after landing. They always left the engines running for around two minutes following a landing before shutting the engines down. I presume this was to allow the cooling system to remove most of the heat before shutting them down completely. It's not difficult to imagine that the coolant and/or the lubricant would boil from the residual heat if they simply turned off the engines.
Jet engines are cooled by the air coming in. Commercial engines are known as high bypass. So most of the air they take in is as the name implies; bypassed from the combustion chamber and used used for cooling the chamber down and on commercial airliners it's also the main thrust. Jet fighters are known as low bypass; so most of the air is actually burned. This is known as a APU. or Auxilery Power Unit. This little engine runs when the main one is off or just starting up. It also provides bypass air for the compressor to start spooling during engine start up. Helicopters like the one's you used to watch are known as turbo shafts. They have a jet engine that drives a reduction gearbox that powers the main and tail rotors (depending on design). Instead of using the engine's thrust, they use the rotational force of the turbine. Same concept with the turbo props. Jet engine is connected to a reduction gearbox that rotates a propeller.
Yes , that’s exactly what it’s for. I was surprised that I could not get straight out of the helicopter when we landed but would have to sit there awkwardly looking at the ground crew waiting for the temps to drop.
Don't you mean "glamping". Reminds me of a national park camping trip here in Qld. The camp-site neighbours were a group of middle-aged school teachers "cutting loose". A peaceful mountain morning was interrupted by one of them trying to get a chainsaw going to cut firewood. Fortunately he never managed it and quickly gave up.
That's cool. Its my first time watching "The WTF" channel. The farm they are on looks like it could be in the U.S. Midwest. I live in Missouri, and the surrounding natural setting in NSW looks a lot like where I grew up on the north edge of the Ozarks. Edit: I know nothing about airplanes other than the basic components (wings, engines, rudder, engines, APU, etc.). Do airplanes use AC current or DC? Can the APU run basic instrumentation when plane isn't hooked to ground supply with no engines running? Anyway, dumb questions, but thanks!
Lightbulb dummy load-makes me think of a lightbulb load made up for a 10kw AM broadcast transmitter having over 10 1kw tower top beacon bulbs-1 kw each. Lit up nice and brightly flashed during 100 % modulation.
It is like in a hydroelectric or wind power generation which have dummy loads or dump loads, (My concept is wiring the dump load to a water heater, so that the excess energy can be used in heating water for household or commercial use), or in FM radio, which they connect the transmitter to a dummy load for maintainance and testing purposes in place of antennae.
@@markarca6360 that is what the lightbulb load was for. At a gov’t VOA studio plat they have a 750kw Cat genset for backup power. It is equipped with a large nichrome wire wound load for testing.
Brilliant! Is it electronically governed or rated to a fraction of what it's actually producing in HP? Because it didn't seem to waver when the 6Kw of bulbs lit up and turbines don't respond like IC engines to sudden loading.
The alternator needs only a fraction of the power that this turbine engine produces, that's why you hardly notice the 9kW of load. In an aircraft, the APU does a lot more than just produce electricity. It outputs compressed air (known as "bleed air") which can run the air conditioning packs to heat or cool the cabin while the aircraft is on the ground, which requires quite a bit more horsepower than the electricity generation does. Additionally, this compressed air is also used to start the main engines.
There’s a massive amount of rotational inertia in the engine due to how fast the turbine spins. This makes it less susceptible to sudden loading than a piston engine spinning at 10% of the speed. Also the extra fuel can be introduced instantly. Turbine engines are slow to accelerate because of surge margins to prevent compressor stall, but once up to speed you can add fuel as fast as you can open a valve provided you don’t exceed max temps (which is very difficult on this engine due to its very oversized compressor).
I'm getting one for camping. My camp ground neighbors will love me... no stinking quite Honda Generator. I'm pretty sure fuel burn to KW is not economical.
How about converting an old APU of about 50HP to natural gas and driving a proper stator for either 50 or 60Hz output as a backup generator? The question is fuel flow. It might do well close to 100% load but likely inefficient at 20%. And I have wonderful neighbors so probably not the best solution.
Can it generate enough power to drive 4 electric motors each with a rotor such that it can lift its own weight, that is could it be used to power a quadcopter?
i would love to have that unit . it loves to run on jet A i guess. how many K.W. is it , what is the voltage, and HZ most aircraft equipment uses 300 HZ , is this 300HZ , how do you get one and what is the cost.
400hz at 90kVA at 115/200v typical for the A320. DC power if from generator (even engines) is provided by TRs. Transformer rectifiers. They change AC to DC...there's 2-3 minimum on jets. the 3rd is typically redundant.
Actually, standard aircraft Alternating Current is at 400 hz. I'm pretty sure the B-727 aircraft I worked on that used this APU had 20 KVA generators, and the generator on the APU matched the engine-driven generators for compatibility.
A bit more technical info would be nice. eg point out what the various bits on the APU are. How much fuel did that run use? Show the volt meter when switching the loads.
I highly doubt it. Most APUs are designed to produce "bleed air" in addition to electrical power. If you're unfamiliar, it's high pressure air used to pressurize the cabin and start the main jet engines. So even at maximum electric load, there's a lot of unused capacity for generating the air. Now, you might think "still useful for job site where they use pneumatic tools". Unfortunately, bleed air is around 40 psi, while most pneumatic tools want around 90 psi. I would love for someone to prove me wrong so I have an excuse to buy an APU!
Most likely 3 phase, 400V and a bunch of amps. Only residential loads use 120/240V. Street Lamps are 277V as are most commercial building lighting. Train engines also make 400V electricity run from car to car for various loads, like air conditioning. Around 2005 I rode on a train at the Texas State Railroad and those units generated 400V AC, guessing 3 phase due to the number of wires in the cable. (thumb size wires!!) 208 and 277 are the outputs of various phase combinations of 3 phase in the Delta or Wye configurations. The difference is in if a neutral is used and where it is connected. It all kind of depends on what kind of load you are trying to drive. I have seen pad mount transformers with 277V at restaurants using higher than normal power for cooking. Top of poles are often 15,550 phase to phase and 14,470 phase to neutral, which is then stepped down to local needs using another in-line transformer. (This is from a recent - 8/2023 interaction with an Oncor crew doing pole maintenance) In my area, many of the pole mounted transformers have had their input disconnected and new service feeds to pad mount transformers directly off of the pole top lines have been installed.
I've always been a little annoyed with what seems to be the power generating standard of proof. A light bulb. That's fine, and it....lights up when it's working. What would be more impressive would be a good old British 220 Volt electric kettle.
The one thing I don't see addressed for the generator, although y'all glossed over it at the beginning, was lightbulbs don't give a sh*t about CPS. Europe uses 50 cps and the U.S. uses 60 cps. The gen set produces 400 CPS. As long as you don't plug in a motor designed for 50-60 cps, you're good.
Where is the generator located on the APU? And how is it driven? Direct-drive? Belt? And I was wondering how much the APU weighs? Is it similar at all to the gas turbine used in the 63-64 Chrysler Turbine Car?
You don't really have anything that could utilize the a/c power that thing can put out. Most were rated around 40 KVA. Kilo Volt Amps. They would run all the electrical power needs of a jet airliner while on the ground. Or replace one of the engine generators if it was inop in the air. They had the same power rating as the engine generators have. Also while providing all that a/c power, they could start the engines using bleed air off their engine compressor. We got a notice that they use 10 times more fuel than an external air conditioning truck and and power cart.
At a push the power could be rectified (Large diodes) then fed into a standard solar inverter (Panel input side) for mains power... About £800 for a 8kva unit...
While Electric heaters would be a good resistive load, the engine itself is already producing enough heat to melt an iceberg. Again, the main goal here was to generate the compressed air to spin up a larger engine, which is what this unit was built for.
My neighbors are sooo lucky that I do not have access to such amazing toys. I would run them all day..
Not with the fuel consumption of that thing you wouldn't.
You could run them all day, i as your neighbor would sit outside with hearing protection laughing and watching your credit card melt away ….😂
Im mostly concerned with the nearby lambs exposed to around 120 db of jet noise. I did not see them out there at run time however so I guess they are taken inside before a run so they are not direclty exposed to the deafening noise.
Lousy thermal efficiency, likely. Sucks kerosene like crazy. 30 - 33 % LHV, I'd guess.
@@johnpekkala6941 Jet deafened lambs are more tender.
Perfect standby generator for modern suburbia.
I was building those APUs when Mr Garrett himself would walk thru the assembly area.
Is this the same company wich makes the turbo-loaders?
@@MrThomashorst😊
@@MrThomashorst you mean turbochargers? :D
@@snjert8406 yepp ... sorry. we in germany call them "loaders" 😂
@@MrThomashorst oh I know, I'm German hahahahahaha
Those 3x3kW lamps brightened up my day! 😀
There was a news report about a collapsed sun lighting up Swansea... 😂
I'll hold these wires while you throw that switch 😜😜👍👍
World's loudest electricity generation right there. And your wife wouldn't need to run the hair dryer of it, just stand in front of it for a second
It looks like in a Pantene advert, but it gave the women in the advert dry hair.
Heat several houses
👍🏻 PERFECT for use as a home standby Generator….
With HOURLY “self tests”!
That SHOULD teach the tyrants in charge a great lesson.
Ban all small gasoline fueled engines…. ?
How about my new JET-A fueled genes T!?!
Thanks for a very entertaining video.
It has "bleed air" capability for that purpose! 😆
@@MrBen527 and run it through a cooler like an intercooler and expand it for a/c
if I were your neighbor I will bring my folding chair and watch you guys test that thing.
A sight to behold and music (albeit VERY loud!!) to my ears. Many happy years as an aircraft engineer playing with BAC 1-11 aircraft, including the RR Spey and GTCP85. Great video 👏🏻👏🏻👏🏻
9kVA is pretty common for aircraft generators, with the APU being driven directly at a constant speed with the frequency at a nominal 400Hz whilst the main engines obviously change rotational speed significantly so the gen is maintained at 400Hz using a Constant Speed Drive unit (CSD) on older aircraft or an Integrated Drive Generator (IDG). You're right about fuel types...you could probably run a gas turbine engine on sawdust or even flour if you could grind it down fine enough. You know what happens to flour mills when you get a spark!
I can't believe the Internet doesn't yet have anyone running a turbine on flour. Clearly, this must be remedied.
@@fallingwater 😁 👍
Or whiskey. What a terrible waste though.
@@richardpiotrowski2118 Something as nice as a Glenlivett shouldn't ever be allowed because there are millions of gallons of Bells available as fuel! 😁
A sight to behold and music (albeit VERY loud!!) to my ears. Many happy years as an aircraft engineer playing with BAC 1-11 aircraft, including the RR Spey and GTCP85. Great video 👏🏻👏🏻👏🏻
A 300 hp gas rurbine would put out at least 100,000 watts. But it's main mission is to start the bigger engines on the plane using airflow as as a starter motor that make 12,0000+ hp each
WTF is the correct title! 😂
Yup, they do 2 things. Provide electrical power so the startup sequence for the engines doesn't have to rely solely on the batteries, and they supply high pressure (or high flow, forgot which it was) that powers the starters on the main engines.
@@Andrew-ep4kw apus typically put out about 2-4 lbs per second of bleed air at 40-50psi
300 hp is 220 Kilowatts. So double the amount you state.
Minus inefficiency, let it be 150.000 Watts.
Yes and no. Many bigger airports have ground starting units to provide electricity and pressure so the APU doesn't need to run (noise reasons).
On the other hand an APU gives you a huge security margin when you lose an engine to stabilize the electrical aystem and to have power to supply electricity to all avionic systems in case the second engine fails, too. You don't need the RAT then.
Running light bulbs has never been so much fun!
what an awesome bit of kit ,didnt realise u guys were down my way lol i do love anything that combusts fuel
Another fabulous WTF production! ☺️
I like the anti-theft device. No annotation on the control box whatsoever.
This particular APU looks like the thing they installed in the wheel well of a 727. Back in the day, I had a mechanic show me HOW to get the APU to run while the airplane was flying; This was an ultra ultra EMERGENCY procedure, because a running APU WOULD BURN THE TOP OF THE RIGHT WING ROOT. If you lost all your generators for some reason, you could pull down the APU panel, pull two wires off, and when connected, if the gear was down the APU would fire up. Again, an ULTRA EMERGENCY procedure and I certainly would NEVER NEVER tell a Fed/check airman about this.....But it CAN be done.
Was it a design flaw that let it burn the wing root? And also what kind of emergency would justify that?
@@JCarey1988 Lose all your generators due to whatever; You are now down to standby power, powered by the battery, which will last you oh, about 30 minutes. You are flying in IFR conditions.
Do you have any other stupid questions?
@@JCarey1988 The exhaust from the APU was carried via a duct to an outlet on the upper wing surface near the root , with a grate to prevent big FOD items from falling in to the APU. Originally designed with a door, but those were a major problem for dependaility and almost all were subsequently removed.
@@Flies2FLL No need to be rude. WIth it's three completely independent electrical systems, it would almost certainly take a three- engine-failure event to lose all electric power, and with that, you haven't got thirty minutes to sort that out.
@@paulcrumley9756 First of all, there are four independent electrical systems, with standby power the fourth and final system. You are down to battery power at this point.
Loss of all generators can and has been caused by what is known as a feeder fault. If one of the main electrical lines from the generator experiences a major short circuit, it can cause a voltage surge that will knock all three GCU's [generator control units] off line and could possibly damage them, rendering the plane down to standby power.
At this point you are not having a good day.
You have about 30 minutes of battery time in which to get on the ground. The plane flies just fine without electricals, but you may not have lights, radios, or FLIGHT INSTRUMENTS in short order if you aren't on the ground yesterday....
One other issue that this malfunction can trigger is that once you are safely on the ground, the low beer light may begin flashing brightly. There is no checklist for this issue, the solution is obvious.
Turbine power generators are actually pretty common around the world. They have the advantage that they can run on basically any fuel including gas and diesel. I'm curious, could this run on any fuel? Would that work?
hearing protection not optional
Some liquid fuels wouldn't provide enough lubrication for the fuel pump - such as petrol. However, you could mix some oil into the petrol to help with that problem.
You'd have to mess around with different air/fuel ratios for each different fuel.
All turbines will run on all kinds of fuels - with the right fuel delivery system.
@@brianmurphy8790 I see, interesting that it's the fuel pump. So those turbines that are designed for flex fuels probably have specially designed fuel pumps
I worked on larger Allison 501 industrial engines a long time ago, different fuels may require different nozzles and fuel manifolds depending on the energy density of the fuel. I worked on some dual fuel engines that had liquid fuel and gas fuel systems. The liquid systems normal sized nozzles and standard fuel piping. Low energy gas fuel (Methane) had huge nozzles and an almost doughnut like fuel manifold ring around the engine to admit the larger volume of gas needed fast enough. Add super heated steam re-injection and it gets very complicated in there.
400 cycles will burn your house down. We run 60 cycles. If you can rewire generator to put out 60 cycles then ok.
@@smokeandsteamxsw9831 - No it will not... 400 is no more dangerous than 50 or 60. I don't know where you got that idea, but all the electronics you have with switching power supplies, the lamp dimmers, and most other things are OK on 400 hz. Transformers in some cases do not like it and motors try to sync up with the frequency so AC fans and some washing machines are not OK with it. But for running lights and electronics and motorized things that utilize a switching power supply? Bullocks. Its back to school my son.
You guys have the best toys.
I wish I had one of these. Because I would actually legitimately use it for something. I’ve had this idea for an awesome long range RC boat for so long and one of those would be so amazing for it.😩
Just amazing. Thanks for sharing. I am a total aviation Geek.
I've started many an APU, but never like this! If it weren't so loud, it would make a great backup home generator, I bet.
I think you wouldn't like the daily fuel truck deliveries including the bills..
Great in sense of flexibility because you kinda can run many different fuels. You can insultate this engines quite good because the noise frequency is very high.
Justin
Our contest group are on the lookout for a nice compact quiet generator to power our station during next month's VHF national field day. I'm sure one of these would fit the bill very nicely:-)
73 de Steve M0KOV
Plenty of power if nothing else!!!
Garrett AiResearch, who built that APU, was acquired by AlliedSignal and then merged with Honeywell.
Correct. We still make APUs to this day (I work at honeywell)
First thing that I saw was a Miami Beach Florida from Miami Beach🤗🤣
Great fun :) --- a bit like getting a D9 to dig a flower pot though 🤣
that would make an great range extender for an electric car :-)
I'd use it for maaaaany things...
- The exhaust of the APU can be used for a gasifier that can generate syngas for feeding the APU
- The pneumatic bleed can be used of another processes (smelting?)
- Also the exhaust can feed a steam cycle...
The possibilities are infinite...
If only there a way of harvesting the amount of noise it makes
Love the Garrett turbine
Shout out from Prescott AZ
Nice video. Do you by chance have access to the GTCP36-6 maintenance and parts manuals. I have a surplus APU that i would like to get running for a project.
Was this one used on KC-135A’s?
In a diesel generator an old rule of thumb is 1/2 pint per KVA per hour at full load for a fairly modern turbocharged diesel engine. I wonder what the consumption is with this? I ran lots of Cummins KTA 50 engines in the desert on JP8. We had 20X 50 liter 1250KVA units running in a synchronized plant in various locations.
@@smithy1833 and how many KW?
It sounds very like the jet engines running the ambulance helicopter which used to land at a hospital almost next to where I used to reside for work purposes. One thing I noticed is that they would never just shut down the engines after landing. They always left the engines running for around two minutes following a landing before shutting the engines down. I presume this was to allow the cooling system to remove most of the heat before shutting them down completely. It's not difficult to imagine that the coolant and/or the lubricant would boil from the residual heat if they simply turned off the engines.
Jet engines are cooled by the air coming in. Commercial engines are known as high bypass. So most of the air they take in is as the name implies; bypassed from the combustion chamber and used used for cooling the chamber down and on commercial airliners it's also the main thrust. Jet fighters are known as low bypass; so most of the air is actually burned. This is known as a APU. or Auxilery Power Unit. This little engine runs when the main one is off or just starting up. It also provides bypass air for the compressor to start spooling during engine start up. Helicopters like the one's you used to watch are known as turbo shafts. They have a jet engine that drives a reduction gearbox that powers the main and tail rotors (depending on design). Instead of using the engine's thrust, they use the rotational force of the turbine. Same concept with the turbo props. Jet engine is connected to a reduction gearbox that rotates a propeller.
@@fightingfalconfan I knew most of that except for the difference between high bypass and low bypass engines. Thanks.
Yes , that’s exactly what it’s for. I was surprised that I could not get straight out of the helicopter when we landed but would have to sit there awkwardly looking at the ground crew waiting for the temps to drop.
i could picture myself firing that thing up in the garden for a load of dirty clothes and letting rip 2.5h 😂😂😂
My neighbors would definitely know when my lights were being turned on.
Just what i need for the next camping trip
Don't you mean "glamping". Reminds me of a national park camping trip here in Qld. The camp-site neighbours were a group of middle-aged school teachers "cutting loose". A peaceful mountain morning was interrupted by one of them trying to get a chainsaw going to cut firewood. Fortunately he never managed it and quickly gave up.
Can you change the rectifier to make 60hz?
That's cool. Its my first time watching "The WTF" channel. The farm they are on looks like it could be in the U.S. Midwest. I live in Missouri, and the surrounding natural setting in NSW looks a lot like where I grew up on the north edge of the Ozarks.
Edit: I know nothing about airplanes other than the basic components (wings, engines, rudder, engines, APU, etc.). Do airplanes use AC current or DC? Can the APU run basic instrumentation when plane isn't hooked to ground supply with no engines running? Anyway, dumb questions, but thanks!
Is there a louder way to make electricity?
Lightbulb dummy load-makes me think of a lightbulb load made up for a 10kw AM broadcast transmitter having over 10 1kw tower top beacon bulbs-1 kw each. Lit up nice and brightly flashed during 100 % modulation.
It is like in a hydroelectric or wind power generation which have dummy loads or dump loads, (My concept is wiring the dump load to a water heater, so that the excess energy can be used in heating water for household or commercial use), or in FM radio, which they connect the transmitter to a dummy load for maintainance and testing purposes in place of antennae.
@@markarca6360 that is what the lightbulb load was for. At a gov’t VOA studio plat they have a 750kw Cat genset for backup power. It is equipped with a large nichrome wire wound load for testing.
Interesting that the whine of the turbine doesn’t vary at all when the 9 KW load is introduced.
That beast outputs 150 - 200 kW. That's like putting a 20 watts lamp in your wall socket...
Is that the same setup that is inside a -60?
Was it hot started? sounds like friction...
Brilliant! Is it electronically governed or rated to a fraction of what it's actually producing in HP? Because it didn't seem to waver when the 6Kw of bulbs lit up and turbines don't respond like IC engines to sudden loading.
The alternator needs only a fraction of the power that this turbine engine produces, that's why you hardly notice the 9kW of load. In an aircraft, the APU does a lot more than just produce electricity. It outputs compressed air (known as "bleed air") which can run the air conditioning packs to heat or cool the cabin while the aircraft is on the ground, which requires quite a bit more horsepower than the electricity generation does. Additionally, this compressed air is also used to start the main engines.
There’s a massive amount of rotational inertia in the engine due to how fast the turbine spins. This makes it less susceptible to sudden loading than a piston engine spinning at 10% of the speed.
Also the extra fuel can be introduced instantly. Turbine engines are slow to accelerate because of surge margins to prevent compressor stall, but once up to speed you can add fuel as fast as you can open a valve provided you don’t exceed max temps (which is very difficult on this engine due to its very oversized compressor).
I'm getting one for camping. My camp ground neighbors will love me... no stinking quite Honda Generator. I'm pretty sure fuel burn to KW is not economical.
And I get cranky when the neighbor starts up his Honda 5KW genset haha
Totally agree with you, the most annoying generators are other people's lol.
I work on the newer versions of the GTCP85’s in a test facility. 180’s, 180-9’s, 180C’s, 180L’s, and 185L(A)’s.
How about converting an old APU of about 50HP to natural gas and driving a proper stator for either 50 or 60Hz output as a backup generator? The question is fuel flow. It might do well close to 100% load but likely inefficient at 20%. And I have wonderful neighbors so probably not the best solution.
I would expect the RPMS would be too high for 50 or 60 Hz. Could use a rectifier with a low-voltage stator to drive a sine inverter?
@@sodiumvapor13 Or specify pulleys for the correct RPM.
Where were these generators located in the planes? Probably in the rear back tail of the planes.
You can usually see the exhaust right at the tip of the tail.
Kilowatt rating, output?
I enjoyed that :-)
Good idea bro witch turbine thank
All you need now, is a house big enough to use all that heat.
For my Yankee bros , that’s a snowblower!
What would a unit like that usually go into? The back of a passenger airliner?
Mostly in the tail cone, but the B-727 has its APU in the right wing forward area, and some of it actually passes through the keel structure.
Can it generate enough power to drive 4 electric motors each with a rotor such that it can lift its own weight, that is could it be used to power a quadcopter?
imagine if it directly drove a big rotor
That's a crazy test a small home genset would power those lights.
i would love to have that unit . it loves to run on jet A i guess. how many K.W. is it , what is the voltage, and HZ most aircraft equipment uses 300 HZ , is this 300HZ , how do you get one and what is the cost.
400hz at 90kVA at 115/200v typical for the A320. DC power if from generator (even engines) is provided by TRs. Transformer rectifiers. They change AC to DC...there's 2-3 minimum on jets. the 3rd is typically redundant.
Actually, standard aircraft Alternating Current is at 400 hz. I'm pretty sure the B-727 aircraft I worked on that used this APU had 20 KVA generators, and the generator on the APU matched the engine-driven generators for compatibility.
I wass wondering. If i used an old APU to provide electricity in case of blackout.... do you think, my neighbours would notice ?
Not if you shared your power with them...
Aircraft APUs generally produce 115 V AC voltage at 400 Hz which is a bit of a pickle with lamps used to seeing 115vac at 60/50Hz
Filament lamps won't really care. Anything that relies on the cycles will not be happy though...
A bit more technical info would be nice. eg point out what the various bits on the APU are. How much fuel did that run use? Show the volt meter when switching the loads.
Please sell me one...
Is possible to output 60hz?
Massive fuel consumption compared to a normal gas generator>?
Still used today in the Convair 580. Electrical output should be 40KVA
Finally a proper way to fast charge your tesla at home!🎉
I want my car to sound like that lol, that would beat my neighbors Straight piped Subaru. I be like morning neighbors listen to this lol.
I will never complain about my ONAN DJB ever again..
I wonder if this is more efficient than a diesel generator rated at the same power
I highly doubt it. Most APUs are designed to produce "bleed air" in addition to electrical power. If you're unfamiliar, it's high pressure air used to pressurize the cabin and start the main jet engines. So even at maximum electric load, there's a lot of unused capacity for generating the air. Now, you might think "still useful for job site where they use pneumatic tools". Unfortunately, bleed air is around 40 psi, while most pneumatic tools want around 90 psi.
I would love for someone to prove me wrong so I have an excuse to buy an APU!
Maybe if all the power of the turbine was making electricity...
@@Charon-5582let us know how Dr. tesla
i bet your neighbors love you
Best diesel generator ever
How? Longivity or power?
That's alot of equipment for 6 light bulbs!!
I need one of these for camping. I bet it could run a microwave.
Upvoting for the channel name alone 😁 That must have loud af. Do you record the db level for any of your tests?
Might be something to try!!
@@thewtf Don't, the local EHO might use it as evidence... lol
is it 3 phase @ 120 volts must have a bit of current
Yeah think so.
Most likely 3 phase, 400V and a bunch of amps. Only residential loads use 120/240V. Street Lamps are 277V as are most commercial building lighting. Train engines also make 400V electricity run from car to car for various loads, like air conditioning. Around 2005 I rode on a train at the Texas State Railroad and those units generated 400V AC, guessing 3 phase due to the number of wires in the cable. (thumb size wires!!) 208 and 277 are the outputs of various phase combinations of 3 phase in the Delta or Wye configurations. The difference is in if a neutral is used and where it is connected. It all kind of depends on what kind of load you are trying to drive. I have seen pad mount transformers with 277V at restaurants using higher than normal power for cooking. Top of poles are often 15,550 phase to phase and 14,470 phase to neutral, which is then stepped down to local needs using another in-line transformer. (This is from a recent - 8/2023 interaction with an Oncor crew doing pole maintenance) In my area, many of the pole mounted transformers have had their input disconnected and new service feeds to pad mount transformers directly off of the pole top lines have been installed.
What does it matter what sort of power is at the top of the pole? Lots of street lamps on airplanes are there?
You could always put 50p in the electricity meter. It must be cheaper than aviation fuel! LOL
Can you charge a tesla with it?
I've always been a little annoyed with what seems to be the power generating standard of proof. A light bulb. That's fine, and it....lights up when it's working.
What would be more impressive would be a good old British 220 Volt electric kettle.
Need to get myself an APU now to use it in the zombie apocalypse, wonder how long it'd take to charge a big battery bank
hearing protection not optional
A 300bhp engine testet with 10kw load? More power plz.
The one thing I don't see addressed for the generator, although y'all glossed over it at the beginning, was lightbulbs don't give a sh*t about CPS. Europe uses 50 cps and the U.S. uses 60 cps. The gen set produces 400 CPS. As long as you don't plug in a motor designed for 50-60 cps, you're good.
😂my ears are clean now 😂
duos this burn more or less fuel per watt
more
Giggidy!!!
I can imagine someone taking an apu camping 😅
Where is the generator located on the APU? And how is it driven? Direct-drive? Belt? And I was wondering how much the APU weighs? Is it similar at all to the gas turbine used in the 63-64 Chrysler Turbine Car?
Imagine firing that up at a campground.😂
Needs a much bigger load that unit can drive a 60KVA generator. The downside for power generation use is that it burns just under 4 liters a minute
I wonder if it could be modified to run on LPG.
What would cost you more? A fuel bill or an electric utility bill?
Fuel bill by far
@@nathandevine552That depends... If gasoline gets around $2.50/gallon, its cheaper for me to run my Honda inverter generator than use the power co.
@@grayrabbit2211 if you do the math on kwhours I highly doubt it
Lake whails Florida my uncle lives there
Mine used to be a Solar...International Harvester
They aren't fuel efficient, and loud as hell.
Jet powered gaming rig
I think Paul and I ate all the pies........:-)
Looks like great fun, but that’s an awful lot of noise , and $ for fuel just to get 3600 watts.
You don't really have anything that could utilize the a/c power that thing can put out. Most were rated around 40 KVA. Kilo Volt Amps. They would run all the electrical power needs of a jet airliner while on the ground. Or replace one of the engine generators if it was inop in the air. They had the same power rating as the engine generators have. Also while providing all that a/c power, they could start the engines using bleed air off their engine compressor. We got a notice that they use 10 times more fuel than an external air conditioning truck and and power cart.
You could rectify the output then feed that into a standard solar inverter to get household usable power..
And need a fuel truck full of jet fuel to keep it going. @@dougle03
0:07 that’s a freaking rb211
well we all know what these guys will do during a blackout XD plenty of power to keep at least a few bulbs on albeit 400Hz...
At a push the power could be rectified (Large diodes) then fed into a standard solar inverter (Panel input side) for mains power... About £800 for a 8kva unit...
I think it's perfect for my Tesla
that will light up a GU81
About 180 k VA
I install Koehler generators if you want something easier
Light bulbs???????
How about a few electric heaters😀
He’s just playing with the starter generator but the real power is in the compressor bleed off
@@williamwinsor7376 😁
While Electric heaters would be a good resistive load, the engine itself is already producing enough heat to melt an iceberg. Again, the main goal here was to generate the compressed air to spin up a larger engine, which is what this unit was built for.
Light bulbs are just inefficient heaters lol
@@holysirsalad yes, they just emit energy at slightly higher frequencys😀