Flat Spins Upright Spins and Snap Roll Spins
Vložit
- čas přidán 22. 09. 2011
- Spins are an autorotation that results from a stall with rudder input, generally with reduced power. A snap roll is an autorotation with rudder input and generally higher power or higher speed. One wing is stalled in a snap roll, both wings are stalled in a spin. Recovery from a spin usually happens when the elevator and rudder are centered. There are 4 types of spin: flat and normal, inverted and upright. Spins can be to the right or left and usually the aircraft has a different behavior for right, left and inverted.
The tricky bit is that all spins are unique and once in a while an unknown condition can develop in a spin making recovery much more difficult. Early jets had spin parachutes that could be deployed to break an uncontrollable spin. Once in a great while a spin can develop where autorotation continues after controls are centered. A bump of down elevator can break the spin or holding opposite rudder. There is a danger of reversing the spin with too aggressive opposite rudder input. Down elevator may actually increase the spin rotation in an upright spin. Opposite aileron may make a normal spin become flat.
Flat spins can be particularly dangerous as there is no airflow over the rudder or elevator except propwash. Full throttle may not stop the autorotation and may make the flat spin flatter. Generally a normal spin can be converted to a flat spin by applying opposite aileron and adding power.
Some aircraft flat spin better than others. The Jimmy Franklin Waco biplane has a perfect flat inverted spin that recovers easily. The Bobby Younkin Samson biplane also does a nice inverted flat spin. Sukhoi 26 aircraft can flat inverted spin easily though recovery can be tricky. The Sukhoi 26 can plop onto it's back out of a tail slide in a perfect attitude for beginning a flat spin.
Spins are a good way of losing altitude without building up airspeed or changing location. A nice spin looks elegant and is a low G maneuver. However, a spin can kill you and should never be done without high altitude practice. The most dangerous spin is the unexpected kind...out of a stall turn or a during turn in the landing pattern where airspeed gets too low. Stalls with rudder input are always a recipe for a spin.
Top aerobatic pilots have discussed the solutions to "stuck" spins. Often the only recourse is to bail out. Once the pilot has departed the aircraft, the machine may recover from the terminal spin. Why? The aircraft minus the pilot is now more nose-heavy and the controls are neutralized and generally the pilot shuts the engine off before hitting the silk. So one school of thought dictates that letting go of the controls and shutting the engine down to landing idle might bring about a spin recovery which won't respond to normal inputs. This obviously could be frightening as the ground comes up to meet the aircraft! Full power won't do the job. The stall must be broken, the nose must be moved down. A flat spin converted to a normal spin is a step in the correct direction. - Sport
This is legit amazing. Some of them are pulling out of a dive closer to the ground than I feel comfortable in Flight Simulator
I'm amazed how these guys do what they do. I mean the structural loads you would think the wings would rip right off
Broke my brain. Reminds of a time when I was a kid at an air show with my uncle, who at that time was a Navy pilot (P3), and a we saw a maneuver by a light propeller plane that was sufficiently out of the ordinary that he exclaimed: "I can't imagine how they did that." Well, the flat inverted spin was beyond that, by a mile.
Some of what you saw in this video are shoulder rolls which are neither spins nor snaps. The reason airshow pilots do snaps instead of spins is they allow you to maintain energy while descending so you can do the next maneuver.
The sequence at the end was performed by a SU 26 at the 1990 WAC in Yverdon Switzerland. Don't know the pilot but all the SUs were flown by the Russian team.
I remember, maybe 45 years ago or so, Mary Gaffney, a world-class aerobatic pilot did a snap roll immediately after take off in a Pitts at an airshow in Florida. Simply amazing.
I think the FAA has tighter standards now. A few years later I went to an FAA Flight instructor refresher course and Mary Gaffney sat behind me. The seminar teacher made a remark that aerobatics are unnecessary and a waste of time. Caffney blew a cork and hammered the guy. I'll never forget that. I think he had no idea that a world champion aerobatics pilot was sitting in his class.
1:14 Self induced localized IMC. ; )
I just read about a '30s Hawker Fury biplane that got stuck in a flat spin. The pilot entered at 20k altitude and as the spin developed the engine stopped and the spin went flat. After 10k of recovery attempts he stood up in order to bail out. At that moment the flat spin became a normal spin. No CG change but more drag as the pilot stood up. He was holding the control stick at center but the rudder pedals were obviously free. He climbed back in and recovered from the normal spin.
That’s not what stopped the spin.
Bob Herendeen used to perform his “inverted mile” in his pitts. Still to this day the greatest thing I’ve ever seen in aerobatics.
I love Sean Tucker, great guy and a fantastic pilot
Inverted flat spin is a gyroscopic maneuver, or a version of prop-hanging, only horizontally. It requires power to induce the precession. It really does look like a bike tire on a tope and is quite a beautiful maneuver.
its the wing on it the Edge 540 and most pilots love its post stall handling as it recovers so easily
i can do slow spins on my 1/4 scale Edge but the bird just love to snap and spin
it also has an insane roll rate and can really drill holes in the sky if you want to
Thumb up !!
Greetings from The Netherlands.
Woo Kyle Franklin is one of the best!!!!
that's sean tucker for ya
What a cool vid
Expert! I want to see an Immelmann Turn!
Also,I knew an instructor who got into a flat spin in a grumman yankee at and...he stood up..he was still instructing at end when I moved on...think on him Tim to time....
Being stuck in a flat spin is no fun at all. Many have parachuted out only to see the aircraft recover from the flat spin all by itself. Why? Without a pilot the CG changes to more nose-heavy. A prudent pilot will shut the engine down before departing which will
make the nose drop as well. There's a notion that with a big engine you can power your way out of a flat spin but that has not always worked. Some test aircraft have a small parachute in the tail to be deployed when stuck in a spin. You may have done hundreds of spins in the same aircraft but not all spins are exactly the same and there is always a potential for coming up with
game changer.
you are right about every spin is different and these aerobatic pilots bite the dust from time to time because they think they know every type of situation that can arise but then a situation will arise that they are not aware of and they may loose 200 ft of altitude and that can be the difference between hitting the ground and pulling out above the trees like these guys are doing.
Thats incorrect. Every bit of it.
We had to do a spin once a year on a check flight . I always hated it , it wasn't so much doing the actual spin . It was all that G pulling out . :-)
Damn, I wish I could fly like that.
Amazing recovery. The plane was on fire the whole time! Truly incredible pilot.
First plane is Kyle Franklin, in the Waco Mystery Ship
😱 Hallucinant.
Quand je pense que quand il y a du vent et des thermiques parfois je galère encore à faire des tours de piste.
Jet with Trust vect nozzle - we do this maneuver first
Biplane - Hold my aviation fuel tank.
This is amazing. As an absolute newbie, how do the wings not snap with that much air resistance? Or does it take a lot more to snap a crafts wings?
I once asked a pilot about that and he told me, that most sport aircraft have wings which are made of metal so that they dont snap because of the air resistance. Other than that i think a experienced pilot who does such air acrobatics won't let the plane become to fast.
The aircraft are certified to take the kind of abuse. PItts Special typically can take up to +6 G and -5G the ones like Sean D Tucker fly's is probably rebuilt to handle lot more they are wood and fabric covered wings very strong typically the wings do not hold fuel tanks which allows for reinforcement.. Aircraft like the Extra 300 are composite the air frames are extremely strong +10 -10 G loading blackout before you can over load the air frame.
Thanks for the info
Overbuilt.
plane madness
0:16-0:36 most satsfying sound ever
I always hear that in tom and jerry
Is that a One Design at 1:35???
00:50 OH DEAR!!!!
WOW!! OMG...
Its only a spin if,the airspeed is below the stall
Sounds like the engine of No.1 is running at high power during the flat spin, or am I mistaken? Is this necessary to maintain the flat spin?
I think yes, that's one of the reasons we avoid adding power during a full developed normal spin, to avoid being in a deadly flat one
Yes full power is required.
To come out of it engine goes to idle. Aileron neutral followed by reverse rudder to counter the spin. Elevator neutral and wait for airspeed then pull up and once about level ad power back in
What was the radial engine biplane at the start of the video?
Looked like a stearman. Super stearman to be exact
Almost every single comment here describing these maneuvers is wrong, including many of the descriptions on the clips. And happy new year.
This video is to promote discussion of spins in general. Spin research is a very mysterious science as there are so many variables. A spin wind tunnel was built a long time ago but not much was learned from it. Here's a question: Has anyone seen an Edge 540 do a nice slow spin? I don't know if it's high energy style or something inherent in the design that most pilots do a fast power up descending set of snap rolls instead of a spin.
You simply ad full power and itll develope into a slow flat spin.
I dont fly full scale only models but im proficient at 3D aerobatics and its simply a stall spin with little bit of manipulation and full power.
Easy to come out of.
Even easier when you have mass power to weight ratios as in my models.
I can go from inverted or up right flat spin to a hover just above the ground
Ww1 pilot does this all the times
DO A BARREL ROLL
I’m dizzy already
Nice. Some russian pilot should do the same with 18 ton SU-35 :D
gimana caranya bang😁👍
war thunder planes be like:
Looks like fun; but at my age,body would not approve of these accelerations...normal spin ok though...
" both wings are stalled in a spin."......FAIL.
" A bump of down elevator can break the spin."....FAIL
"There is a danger of reversing the spin with too aggressive opposite rudder input." FAIL
"Why? The aircraft minus the pilot is now more nose-heavy and the controls are neutralized and generally the pilot shuts the engine off before hitting the silk." Mega FAIL
The author of the above better go back to ground school and brush up on what causes an airplane to spin. Clue...and airplane is not spinning if both wings are stalled. Rudder in nice to have for spinning but, not necessary to make an airplane spin.
Both wings are stalled in a spin per the FAA's Airplane Flying Handbook, page 4-12, which says "the rising wing is less stalled than the descending wing."
@@DavidLudlow thats a different kind of spin lad.