Why NASA Abandoned the Gemini Rogallo Wing
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- čas přidán 6. 10. 2020
- My companion article, which also has a full source list, is over on my blog at Medium: / why-nasa-abandoned-the...
And if you feel like you've heard me talk about this before, you're not wrong! Super old blog post that isn't as detailed, but it's here: PopSci: www.popsci.com/paraglider-how...
Fighting for Space: www.amazon.com/Fighting-Space...
Breaking the Chains of Gravity: www.amazon.com/Breaking-Chain...
Apollo Pilot: www.amazon.com/gp/product/080...
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Music: Groove Grove by Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 4.0 License
creativecommons.org/licenses/b...
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Dress: Vixen by Micheline Pitt. Not sponsored or anything, I just love her and her company values and want to shout out an incredible brand!
![Why I'm not a Shuttle Fan, Part 2: Dyna-Soar [Amy's Soapbox]](/img/n.gif)
The Rogallo wing evolved into an efficient Hang Glider. I have over 500 hours total time flying up to 19,000 ft, cross country flights up to 120 miles and flight times of 4 1/2 hours on modern Rogallo wings. Flying like a bird and with soaring birds, using the energy of the atmosphere and gravity to fly for hours without an engine deeply satisfying sport.
Amy’s dresses are beginning to compete with Curious Droid’s shirts. 😀
Hahahahahahaha indeed. Love both of them
LoL
Do we know this isn't on purpose?
I'm curious about the ongoing spider web motifs
She doesnt the 70s blue makeup.
I met Wally Schirra in Pasadena back in 2006. I asked him about the "paraglider" recovery system on the Gemini. All he said about it was that "it didn't work" so they used the parachute instead. I still remember building a 1/72 scale model of the Gemini made by Revell and it had landing skids on it and a picture of the rogallo wing on the front of the box.
I have his autograph, and that same model kit sitting in a box waiting for me to build it.
I built a pair of that same Revell kit when it was first released in the mid 1960s, Had to build one with the landing skis deployed. I was 11 or 12 yrs old.
As a former hang glider pilot this warms my heart.
Watched the Mercury Seven flights live while going to grade school, remain a fanatic 59 years later. Thanks Amy, for this content, much which is new to me. Love the dress and red lipstick, Mid-Century style, along with the vintage lamp and the couch. We can hang out any time.
One minor quibble: "atmospheric friction" is not what actually causes much of the heating of reentry. It is the extreme compression of the air just ahead of the reentering body which causes the atmospheric gasses to heat up, much like when you use one of the old tubular air bicycle tire pumps which put out warm compressed air when you use them. You do "work" on the gas to reduce its volume and it gets hot: REALLY hot if the speed is very high. As the capsule slams into the air at extreme speed, it compresses that air, heating it to thousands of degrees. This is the case for a reentering spacecraft, but as you note in the video, using the right shape to create a proper boundary layer (along with an ablative heat shield) can allow the spacecraft to survive that heating and slow to a modest terminal velocity.
exactly right....
@@spacexvanityprojectslimite3315 you shut up. You're wrong.
The hot air becomes super heated plasma , the heat then is radiated from the plasma onto the spacecraft friction is negligble at this stage.
Lots of technical errors
Very poorly written
@Claudia Juarez Correct, but only partially. Increasing a gas' pressure also increases it's temperature - if you're putting a set amount of energy into a smaller space, the temperature will increase. If you're taking the latent energy in several tons of air and slamming it into a tiny space? That's going to increase temperature, which will then radiate into the spacecraft if shielding techniques aren't used.
My uncle was part of the Catch a Falling Star unit out of Hawaii back in the 60s and flew in the back of the plane to catch the Corona film canisters. It was top secret and no one in the family knew what he did with the unit until after his death and his son found information about it.
My grandfather was in the Navy as part of the recovery team for project Mercury in 1961. Thanks for the insight - we didn’t learn about it until after his death and found his notebook about it. Now I understand why he wrote he ‘wished he wasn’t there’ with all that practice!
Epic grandad!
Great video Amy!! I enjoy following all your posts. My father was Charles Richard, he directed and designed the Parasev 1-A under Bikle while he was at NASA's Flight Research Center (Vehicle and System Dynamics Branch) as an aeronautical engineer for the X-15, Paraglider and Lifting Body programs. He passed away in 1999. I believe I have some boxes somewhere from him with many notes and photos of the Parasev design, build and flight tests from 1962-64....I'll look for them, and let you know what I find. I do remember him telling me the story of driving down to the LA area getting the fabric wing sewn up at a sail-makers shop during the John Glenn Mercury flight.
Did you ever meet or hear of Herman Rice ? He was a dear friend and was invited to NASA's pioneers of flight dinner each year. He was a glider pilot one of the originals in califs beach scene.
Really fascinating stories. This could be regarded as a documentary, extremely well narrated.
Most Amy's work has been.
Can't wait to watch after work, but I wanted to share an anecdote. A long time ago, when I lived in San Diego, there was a great gliderport at Torrey Pines, near UCSD. One of the Mercury astronauts came to visit (Wally, I think) and was offered a ride in a hang glider. He refused because it looked too much like a Rogallo wing and he knew too much about the NASA testing. He claimed it had a tendency to stabilize upside down, regardless of the assurances of the pilot who pointed out is was a much more modern design.
I fly paraglider up in NorCal. Our local flying club (started by hang gliders) is called "Wings of Rogallo".
If a fabric wing is ever flown back from space it would have to have that 50's print cobwebs & blue roses!
I always smile when I get a notification that a new Vintage Space is up.
Here's a notification that you must have missed: it is now called THE Vintage Space.
And do I!!
@@craigcorson3036 Did she ever say why? I'm guessing it's to make it less about "space" and more about "vintage."
@@TommygunNG I think it's because she's Canadian. It's like a law there. 😛
@@craigcorson3036 So that's the case, eh?
It seems that Revell was convinced that the Rogallo wing was the likely mode of Gemini recovery, as the initial 1964 issue of their 1/48 scale kit (packaged with a Mercury spacecraft) allowed for configuration after a ground landing. Thanks Amy for another in-depth overview of the golden age of spaceflight.
Thanks for confirming that it _was_ a Revell kit. I made a comment about it but couldn't recall the manufacturor for certain.
As a boy in the '60s I flew a variety of control line & free-flight airplanes. For Christmas one year my folks got me a Gilbert (of Erector Set fame) "Wing Thing", which was powered by an .074 Pusher. It had a black plastic frame and orange "sail" and flew like crazy. It was of course inspired by the Rogallo...
It's high quality content like this that makes CZcams my #1 place for watching content. Congratulations Amy on such a well made piece!
I'm glad your channel is doing well. Been watching for a while.
I really like how you have found your (Vintage) space on youtube, making the most detailed space history videos the way few could while still being accessible. Also this style of being formal but with some fun expressions, mannerisms and consistently gorgeous dresses creates a unique and presentation package.
As a young engineer just out of Texas A&M University in 1966, I was hired by Philco to provide maintenance and operations support for the (Breadboard) Terminal Landing System which we had just built for the Landing and Recovery Division of the Manned Space Center in Houston. We conducted unmanned test drops of many different gliding parachute descent systems at Ft. Hood, Texas, with the cooperation of the US Army from 1967 through 1969 when the project was cancelled. We had three trailers in a fenced compound on a slight rise in the southern part of Ft. Hood's training grounds. I ran the Data Van with computer-driven displays in console like those in the Mission Operations Control Rooms in the Building 30 Mission Control Center. We also had a Radar Van and a van housing the remote pilot flying the test package. The test package was a 400-pound miniature Mercury/Gemini vehicle with shroud line control spools and a downlinked TV camera viewing the terrain below. It was deployed at 10,000 feet AGL as directed from our console displaying the vehicle position calculated from Radar tracking data. We released and skin-tracked weather balloons to store wind profile data before the tests. We developed procedures to land the package within 25 feet of a selected ground target quite reliably. After a deployable steerable descent system could not be developed, many of the gliding energy management procedures developed at Ft. Hood were incorporated into the Space Shuttle's approach and landing procedures.
As a former hang-glider pilot and a space enthusiast I find this very interesting.
Why former? Did anything happen or did you just get tired of it?
@@CockatooDude I found more meaningful ways to get a "high". I found political intrigue more fascinating. At least one movie based on some of my adventures, was made already. And since Russia's next SHLV will be based on my ideas, certain western capitals would still love to see me dead.
@@aristeidislykas7163 Well shit, I did not know I'd meet a revolutionary in the CZcams comments section. Good luck with your endeavours, whatever they may entail.
@@CockatooDude Thank you, my friend. But be aware! Washington is already scared shitless, of me! ...And not because I am a "revolutionary".
Thanks for covering this, Amy! I remember as a youngster I built a model of the Gemini that included the landing skids as optional parts. I think it had the Rogallo parasail as well. If memory serves it was a Revell kit; later versions dropped the optional wing.
As a teenager I flew model rockets, both kits and scratchbuilt. My friends and I made some Rogallo wings, we had reasonable success with them.
These beginnings may be "esoteric" and "forgotten", but rogallo is credited as being the inventor of the Hang Glider, and that led to parasails and also the powered hang glider... and all of THAT work?
Led to SpaceX using something very similar to catch fairings, so full circle thru commercial / recreational development and ultimately back to a space application.
I would have loved to see you trace the initial lineage to it's uses today. What it inspired is every bit as important as it's forgotten history.
@Franklin Ratliff they don't think crew dragon will be around long enough to make that worthwile
@Franklin Ratliff ISS is slated for retirement in 2024. If it takes 2 years to develop this system and there are about 2-4 crew dragons per year, that's not lot of missions to earn back their investment. And while Starship may fail, as Musk says as well, it is the horse they're betting on. These are the guys who ditched their fully functional F1 vehicle to go into uncharted territories with F9. Who continually fiddled with F9 design, costing them a CRS mission. Who bet the farm on subcooled fuel and lost a payload because of it (like every other company expected them to). Who bet the farm on Starlink. Expecting these guys to take an incremental path to improvement at some point is a bit strange.
@Franklin Ratliff if NASA wanted the parafoil, they should've added it in their contract indeed. They've added plenty of requirements over the years.
@Franklin Ratliff no, but as you said, it only matters if it's in the contract. As a supplier, you never add more expensive stuff if the client doesn't ask or pay extra for it. If it's safe enough for the client, and unlikely to be earned back by saving enough missions over the short period where it is functional, no point in spending money on it.
@Franklin Ratliff Rocket Lab"s Peter Beck and SpaceX have both mentioned (and SpaceX has been very public about their issues they have been having with them for years on crew dragon and fairing recovery) designing parachutes and parafoils is hard. The design is bespoke to the vehicle, and needs to be insanely reliable, or it's no use. It's not like you can upscale a run-off-the-mill parafoil.
"Canadian Jim Chamberlin..." I caught what you did there, Amy! I could even hear a bit of "Oh Canada" in the background. Good on you! Your 'home and native land" has so much to be proud of. This video, one of your best ever.
Have you ever watched one of the movies made about the AVRO Arrow?
You still have the most crisp and clear voice on CZcams.
Besides Amy's great image and presentation, the story has been deeply researched. Congratulation again, and keep up this fine work.
That boiler plate capsule that was used for the manned drop tests ended up in Britain. It was on display at the Museum of Science and Industry in Manchester for years, before being moved to the National Space Centre in Leicester, where it's still on display as far as I know.
Back in the '60s Popular Science published plans for a Rogallo kite. I made one, it was awesome; it would even fly upwind of me.
I grew up with the space program, watching every launch live starting with Gemini 5. I also read everything I could find on space. Sometime after the Apollo 1 fire I checked out a book that was only about three or four years old, but already out of date. It showed how "Gemini will not splash down, but will return on land", and it had a pencil sketch of a Gemini capsule using a paraglider to come back home. By the time I saw this, Project Gemini had already finished, and I knew it had never happened that way, but I was fascinated nonetheless. I asked every adult I knew about it, and no one knew anything, some thinking I was just crazy. So this video gave me much joy to see, to learn about something I first wondered about well over 50 years ago. I think you have a new subscriber. Thank you.
Bravo, Amy! I really enjoyed this...and the longer-form format in general. Looking forward especially to your take on MOL. Keep up the great work, and stay awesome! ✌️❤️🚀
Definitely MOL. Fascinating what-could-have-been. Looking forward to Amy's deep dive on that.
Great deep dive. I had not realized how much work went into the Rogallo wing. I thought it was not much more then a study, but NASA actually expended quite a bit of effort to come up with a working system.
I love Rogallo. That development, made me play and enjoy flying hangliders, for many years!
Well produced, great timing in speech. Thanks Vintage Space!
Amy, I haven't forgotten about the Gemini Rogallo wing. I was in elementary school back in the '60's and I did a presentation about the Gemini capsule and the Rogallo wing. I had a model of the capsule with the wing so the audience could see what I was talking about. It did not go very well, I'm sure I mumbled throughout the presentation and I don't think anyone understood or even cared what I was talking about!
Somewhere in my piles of things I still have from my youth is an official NASA pamphlet about the Gemini program. If I manage to locate I'll send you a scan of it if you'd like. Ned
Her dress, hair style and makeup are definitively late nineteen-fifties, just about the video story. Congratulations!
True, and if she's not been to it, then she ought to pay a visit to the Goodwood Revival meeting which recreates exactly that sort of period, with exhibits, car and motorcycle races including all the period glamour and visitors and music in period. COVID allowing of course.
It's videos like these the keep me coming back for more. She covers things of this era that you just don't hear about anywhere else. Nicely done Ms Amy.
When I was in junior high school, I had no idea how fortunate I was that its library had a collection of books which had evidently been published to promote various projects different aerospace companies were trying to sell to NASA and/or the military. I spent many happy hours poring over the technology of alternate histories, seeing "artist's renderings" of Gemini capsules landing under Rogallo wings, the crew of the MOL busily at work on "science", &c.
tatoo artist: "you want what?"
My dad worked on Gemini at MAC and was involved in the Rogallo. He and a few other engineers built one of the first wings and flew it at a small strip near St. Louis, towed behind a car. It was really more of a weight shift hang glider with a low aspect ratio although the term hang glider was not used at that time . The "bat glider", as it was known, was stored in our barn for 20 years before it was thrown out. I have a few color slides but no physical remnants. Oddly enough, there were no metal used in this construction so I guess it could be described as a stealth bat glider.
I expected this to be the usual 10 minute informational CZcams video, but even passed that mark, I was absolutely glued to the content. Always fascinating to hear about roads not taken during the development of something.
Fascinating story, well told. Thanks Amy!😊
Honestly you look so good when you have your hair down and you dont have those bang. Also you dont need all the makeup and eye shadow. Your older videos you looked great. You don't need to fix what isn't broken. Plz get rid of those bangs.
This woman is gorgeous and she has a mind o stay up nights to ponder....wish there were more like her
So much experimentation, so many facets, so little time.
There's always to learn at the Vintage Space!
Thank you!
Thank you for this vastly informative and entertaining video. I grew up during this time and my dad was an aeronautical engineer at ARAP, a small research firm in Princeton, NJ (John Houbolt worked there for a while, too). Part of his work was with the company's wind tunnel in researching re-entry parameters for spacecraft. I cherish those memories of being in the lab shop with him.
A 40 min video about one of the most interesting developments for the gemini program (i remember one of your old Videos about it and since then i was fascinated by it; i have the feeling, that this Video is going to be a little more detailed as the discreption in "in the shoulder of titans" [which I bought thanks to you suggesting it in one of your Videos;)]) by somebody who is amazing in explaining things but who also has done acctual research about it? You simply can not not enjoy this.
Thank you for making these videos!
Amy, as a commerical pilot I'm obliged to comment. I admire Vintage Space. I love your channel and you're the perfect person for a channel like this. Your passion for aviation is unparalleled to which I relate. The 50's & 60's were such a golden age in aviation; with the technology they had back then the feats they achieved is jaw dropping. The engineering alone... Amazing! I'd love it if you could do more on "The Agena". Little is known about that, other than it almost killed Neil Armstrong during the Gemini program. Love you, love vintage space... See you on your next video! Stay safe, stay curious!
Actually, the Agena on Gemini 8 performed perfectly. It was an RCS thruster that had stuck in the open position that almost got them.
Yeah, I know that it was a stuck RCS thruster. I wonder how many people know that, and that's my point asking Amy to do more on the Agena. For example, in this video when she referenced it I didn't know it was Air Force property; I always assumed it belonged to NASA. Things like that. Was it's function JUST to learn docking procedures or we're there other ancillary missions they had in mind for the Agena. And so on...
Really enjoying the recent videos. Love the long format, and the detail. Thanks for some great info!
Amy, we must read your Master's thesis! This is amazing material you've put together. AND your mention of Chamberlain of the Avro Arrow program shows the influence these engineers had on the Apollo program. Controlled landings were exactly what the pilots wanted on the LM, and overrode the automated systems on, I believe, every flight.
I love the footage you put together, but your floor lamp in the background is mesmerizing. Such a cool piece.
Seriously, the lamp is what you're looking at?
(although it is a nice lamp)
@@willsowerbutts Borderline, but true...
I love how detailed Amy is with her history. 😃
Oh the perfection of it all!!!
Thanks for finally presenting this! Informative and kept short. Looking forward to more Vintage Space.
Love your videos. I watch tons of videos on this subject, but you always cover things I never see on anywhere else. Very interesting, informative, and entertaining. Thank you.
Ooo! This is relevant to my interests!
NASA managers : No, this thing is useless
Plucky Australians : mind if I borrow you that mate ?
thanks Amy. You are real enjoyable to listen to and really get into the facts. great job as always.
Great video Amy. Interesting subject... did not know about the Rogallo Wing.
So cool to have you doing these vids again!
Common misconception. Its not friction that heats reentry vehicles. Is compressive heating from the shockwave
Yep, glad I checked whether someone else made this comment first.
The record setting duration missions of the Gemini program are even more impressive when you consider with Gemini the crew was 2x of Mercury and the capsule had habitable space 1.5x of Mercury
And after two weeks it STANK
@@bobdionne4625 I don't remember where I read it, but allegedly when Gemini 5 splashed down after 8 days, one of the Navy frogmen that attached the flotation collar on the capsule threw up when they opened the hatches from the smell.
Very much appreciate your work and fashion. Been a great time! ;)
Wishing I had not waiting so long to watch this video. Utterly fascinating concept, likely limited by materials of the times. Thank you, Amy!
I see Amazing Amy, I hit like then watch because I KNOW its going to be good.
Amy, how about an episode on the NASA lifting body aircraft? And the 'Hotrod' Pontiac Catalina tow car?
There is a whole book universe about the Rogallo by Mike Jeanne, The Blue Gemini series
Thank you for sharing this deep dive! I hope that many more are on the way!
The man that taught me parachuting, Gene Michael Bland, worked on that system. He also tested parachute systems for NASA. He was an Army veteran that served in Vietnam in the SOG program and was HALO instructor #38. Probably a minor character in this chapter of history but I would be curious if you ever came across his name.
also, I like your perspective and approach to telling these nuggets of vintage space
also also, you are the most attractive youtuber!
Does anyone else miss Amy’s cat, Pete Conrad?!?
What happened to Pete?
Oh, Pete always steals the show.
@@ZigZagMarquis Nothing, He's still very common on Amy's instagram.
The paraglider was featured in a March or May National Geographic article with pictures in the early 1960’s. I always wondered why it never flew on a Gemini Mission
You beat me to it. I just posted this fact!
As always Amy, it's been a very interesting piece. Thank you for doing what you do.
Thank you for an interesting and informative video. I enjoy the longer format. Excellent presentation!
Can’t help but notice that almost all of these comments are from men commenting on your dress... as another female space enthusiast, I love all of the videos you put out and love learning more about the topic I’m going to college for! Keep it up Amy, you’re awesome!
Huh, only about a quarter of the comments I see are that.
Man here- I'm just in for the science and history. Anything else is just creepy.
Sorry to say it again, but I love your dress! Thanks for mentioning the designer in the video description. Have a good day!
The October dresses are something huh? I like 'em too
is it just me, or did she change a lot of thumbnails on her recent videos ?
Amy you are a breath of fresh air. You definitely have the right stuff!
Thx Amy for another fantastic space history lesson and Happy World Space Week everyone! I have a fuzzy memory of 1st seeing the Rogallo wing in an old National Geographic - it is so great now knowing the full story. Also thx for showing us the Gemini USAF MOL atop a Titan III. A rare photo I'm sure - just like seeing a photo of the Space Shuttle Enterprise test vehicle at Vandenberg AFB. Finally, thx for the Canadian shout out to the Avro engineer who came up with the Rogallo concept for Gemini AND Happy Thanksgiving Amy! Oh btw, love seeing that background photo of Snoopy flying back to Charlie Brown.
Amy's doubling down on her appearance 😁
gotta love the ksp music!!!
Astronomo it isnt from ksp it is from kevin macleod
IsaQuest the makers of KSP probably licensed that music from Kevin McLeod (or used it under a royalty-free arrangement).
@@isaquest134 yes but it is used in KSP, thats like saying Interstellar music isnt interstellar music because Hans Zimmer created it!
I have to say this is probably my favorite video of yours! 🪂
That was awesome!
Growing up all I really saw regarding this were drawings and photos and vague references in old magazines and books.
This really shed some light on a very cool aspect of the space program that was perhaps ahead of its time in regard to materials and flight control systems but obviously caught the imaginations of so many people.
The world needs more women like you.
I was enamored with the idea of a flying Gemini when I read about it, back in the day! There was another possible return option that I read about too: the "Ball-ute" system. It was accomplished by a half balloon, half parachute re-entry. The Gemini astronauts would have to abandon the spacecraft and each man deploy a balloon to slow down his decent through the atmosphere until deploying his parachute to finish. What can you me about it, was that a serious option too?
As a Hang Glider Pilot and Rocket Engineer...I liked this video. Flying a Hang glider is IMHO the purest form of flying there is. Floating in a gentle thermal with buzzards and eagles just a few feet away whilst 10,000 ft above mother earth is truly inspiring.
Great Video Amy...New Subscriber x
Loving the long format!
I remember seeing an illustration of the Rogallo Wing landing a Gemini capsule in National Geographic when I was a kid. The illustration showed it landing somewhere in the American west.
I remember too!
But the resultant Hang Gliding sport was a great spinoff
I had an 18' Eipper-Formance in the 70's, great fun at Kitty Hawk.
@@Britspence381 WillsWing Falcon 3 in the 90s
I had a Bennett Delta Wing BITD; lotsa fun.
Another great vidya! You have really taken up the quality a few notches! I learned a ton.
Amy, I remember reading the Rogallo wing in a National Geographic magazine back in the 60's. I never thought anyone would have seen or heard of this today. Thanks for writing about this and keeping this alive.
Thank you for that informative video. I actually met Francis Rogallo in the late seventies. He was at Kitty Hawk Kites in Kitty Hawk North Carolina watching people enjoy flying his wing. He laughed when I asked for his autograph. I guess not many people think of scientists as heroes but hang glider pilots appreciate him. I didn’t see it but I was told he flew hang gliders occasionally also.
I didn't know that Scott Carpenter was equipped with shark repellent; was this the inspiration for Batman's bat shark repellent in the 1966 movie?
Julia Child worked on shark repellants for the OSS
"Quick Robin, hand me the shark repellent bat spray!" Has to be my favourite cheesy movie line.
US pilots had shark repellent as far back as WW2. The Batman writers would have known this.
@@1timcat That sounds crazy enough to be true, where did you hear that?
@@likwidchris It's in her official biography.
New to the channel and love every bit of it! Thanks Amy!
Amazing detail and analysis of the implications of this program. Super thumbs up on your research of this history.
"How long until she shows her tattoo? 1:13 Yep, there it is."
She is blessed with Perfect Skin.
I hope she doesn't get any more tattoos.
Trying to imagine what that Tat is going to like in 30 years. From a firm Parasail to a DeVinci like flapping wing. 🙄😎 (please don't hate me Amy)
LoL again
@@johnknapp952 LoL once more
@@CessnaPilot99 live to please yourself not others.
If you’d like to see this piece of history yourself, there is one displayed at the National Space Centre in Leicester, UK. I’ve seen it - it’s the first thing you come across in the Lobby.
I was just about to post the same thing. I have a photo of it somewhere.
@@eventingcrazy Please share!
This is quickly becoming one of my favorite channels about space. Thanks.
Space stuff with KSP music... how did I not know about this channel? Subscribed.
That dress is quite the distraction lol. Great video
I have to disagree on the term “paraglider”, which implies there’s no rigid structure. The Rogalo wing was actually a hang glider, which it later became because of Barry Palmer’s experiments.
I was initially thinking the same thing. But, about half way through, it becomes clear that NASA was referring to this kind of wing structure as a paraglider. Furthermore, the structure intended for these missions had no rigid structure. They were inflatable. I was an avid hangglider pilot for several years and was initially rankled by this apparent misuse of the word paraglider. However, it seems quite possible that the term hang-glider was adopted later buy recreational enthusiasts.
I was under the impression that they were Rogallo wings, and the name Hanglider came later (70s).
Paraglider (80s) referring to a parachute based wing.
Phew... I was still pondering when "Next week" was she gonna upload. Thank you!
Love your Videos. Been watching for years.
"unfurlment" _is_, in fact, a word!
I mean, hey, either way, if you say it and someone instantly understands it, that's successful communication.
Of course. The suffix "-ment" means "action; process", thus unfurlment is the process of unfurling. (That's how English works.)
if it isn't it bloody should be.
Unfurlment: the process of folding and packing of a deployable element. ‘Jeb and Stu tired and tried but simply could not unfurlment the spacecrafts delta wing’.
Synonym: Deploy, unfold, origami, configure
Antonym: Pack, fold, install
Remember, English is a very flexible language. If you can say it, spell it, define it, use it in a sentance, give synonym and antonym, its a working word. The fact that its not in a formal dictionary... a lot of technical jargon isn't.
Unfurl.
@@keithcarpenter5254 and it would probably be enough to turn it into "unfurling", unfurlment is overcompensation.
Very fine and thorough look at the paraglider, Amy. I was familiar with the plan from having come across the 1964 National Geographic omnibus article "How We Plan to Put Men on the Moon," which shows the paraglider as the method of choice. The visual you show (with the tattoo reference) at 24:31 was also in that article, which followed NG's memorial tribute to John F. Kennedy. As I saw those visuals while thumbing through the article in the mid-1970s, I had a _What-The-Hey_ reaction. I had never heard of anything like this, and I remembered Gemini mission well from my childhood. Now I know the whole story. Thank you!
Great video Amy! As always!