Author Topic: The Gemini paraglider / Rogallo Wing  (Read 36314 times)

Online Comga

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Re: The Gemini paraglider / Rogallo Wing
« Reply #40 on: 09/28/2025 02:52 am »
Here is Tow Test Vehicle 2 during a Mojave Desert test. I suspect that is a dummy in the cockpit not a test pilot, because the fingers look stiff.

TTV1 is in the Smithsonian. TTV2 is in Leicester, England.

Not to nitpick, but where you see the stiff fingers of a mannequin, I see a pilot reading the notes on his knee pad and casually grabbing or pushing away his oxygen mask held between his thumb and forefinger.  (Would a dummy be given a pad with a filled out page?)
To each, his own.
Would piloted testing give another way to look for more information?
What kind of wastrels would dump a perfectly good booster in the ocean after just one use?

Offline leovinus

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Re: The Gemini paraglider / Rogallo Wing
« Reply #41 on: 09/28/2025 11:32 am »
https://www.flickr.com/photos/57440551@N03/52620462049/

Quote
Gemini Paraglider Wing at the National Air and Space Museum’s Udvar-Hazy Center in Chantilly, Virginia.


Length: 13m (43ft). Width: 10m (33ft)
 
“The inflatable delta wing was part of a test program in the early 1960s to develop a controllable system for landing two-astronaut Gemini capsules on land, rather than parachuting into the ocean. It was used by North American Aviation, the prime contractor to NASA for the paraglider, in conjunction with two test vehicles, to conduct experiments in gliding and landing at Edwards Air Force Base in California. Due to technical difficulties and a tight schedule for the Gemini program, the concept never became operational.
 
“Francis Rogallo, an engineer at the NASA Langley Research Center in Hampton, Virginia, invented the “Rogallo wing” in the 1950s, the concept on which this paraglider wing was based. Later it was mainly used for hang gliders.”
 
[From the text accompanying the exhibit]

Offline leovinus

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Re: The Gemini paraglider / Rogallo Wing
« Reply #42 on: 09/28/2025 11:39 am »
Here is Tow Test Vehicle 2 during a Mojave Desert test. I suspect that is a dummy in the cockpit not a test pilot, because the fingers look stiff.

TTV1 is in the Smithsonian. TTV2 is in Leicester, England.
More on TTV1
https://www.airandspace.si.edu/air-and-space-quarterly/issue-12/gemini-paraglider-wing
Quote
Gemini TTV-1 Paraglider Capsule

At the start of the Gemini program in 1961, NASA considered having the space capsule land on a runway after its return from orbit (rather than parachute into the ocean). The capsule’s controlled descent would be achieved by the deployment of an inflatable wing of the type invented by American aeronautical engineer Francis Rogallo and NASA’s Langley Research Center. Although never used to recover a crewed spacecraft, the system proved useful in developing alternate landing techniques—and the Rogallo wing was a precursor to the modern hang glider.

The full-scale, piloted Test Tow Vehicle (TTV) was built to test the Gemini paraglider wing in flight. It served as the first of two Test Tow Vehicles flown to perfect maneuvering, control, and landing techniques. In 1975, NASA transferred the TTV-1 to the National Air and Space Museum.

https://www.spaceflighthistories.com/post/come-sail-away-gemini-paraglider

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #43 on: 09/28/2025 11:53 am »
More on TTV1
https://www.airandspace.si.edu/air-and-space-quarterly/issue-12/gemini-paraglider-wing

Gemini TTV-1 Paraglider Capsule

https://www.spaceflighthistories.com/post/come-sail-away-gemini-paraglider

Yeah, they have the TTV-1 and the Paresev in the same location. The Paresev hangs close to the TTV-1. It's neat to see them together, along with a Gemini spacecraft nearby.
« Last Edit: 09/28/2025 11:53 am by Blackstar »

Offline leovinus

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Re: The Gemini paraglider / Rogallo Wing
« Reply #44 on: 09/29/2025 11:52 am »
Maybe this is of interest?

https://history.arc.nasa.gov/hist_pdfs/guides/pp1402_rogallo.pdf

Quote
Series II: The Rockets: The Rogallo Wing and Flexikites, 1954-1991
11 Vernon Rogallo Family Flexikites (Memoirs and Articles)
12 Flexikite Scrapbook
13 "Peninsula Living", March 5, 1960 featuring the Rogallo Family
14 NASA Publications Featuring Francis and His Rogallo Wing
15 The Vernon Rogallo Family Aerobatic Kite Flying Team (The Rockets) Photo Negatives
16 Photographs 4 x 5
17 Photographs 8 x 10
18 Photograph, 8 x 10 on Oversized Board
19 Photograph, Oversized
20 Mounted Poster of Aircraft with Rogallo Wing, Oversized
21 Kite Carrying Case with Kites and Accessories
22 Red Nylon Parachute Material used for The Rockets' Costumes
23 Toy Mercury Space Capsule with Para-Glider (Based on Rogallo Wing)

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #45 on: 09/29/2025 12:36 pm »
Thanks. I turned in part 3 on Sunday and it should appear Monday or Tuesday (I think Jeff is in Europe, which will delay TSR going live). I'm not going to write anymore on this subject, although I might do another part with additional photos if I get the ones somebody told me about. I will post all my photo files here in the next few days.



Update: I just got several more interesting photos. Unfortunately, they arrived too late to include, so I think I will produce a postscript article with them.
« Last Edit: 09/29/2025 04:38 pm by Blackstar »

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #46 on: 09/29/2025 11:14 pm »
https://thespacereview.com/article/5070/1

Gemini’s wing and a prayer (part 3): boilerplates and El Kabong
by Dwayne A. Day
Monday, September 29, 2025

NASA officials had planned to incorporate the paraglider into early Gemini flights, but problems during testing had led to its first operational test being moved back to later flights. By late March 1963, the paraglider was rescheduled for the tenth Gemini mission, but program leaders thought that they still might make the seventh Gemini flight, then planned for October 1965. However, North American’s contract would run out in April 1963. (See “Gemini’s wing and a prayer (part 1): Rogallo Wings, the Paresev, and crashes in the desert,” The Space Review, September 8, 2025, and “(part 2): parachutes, paragliders, and more crashes in the desert,” The Space Review, September 15, 2025.)

NASA officials decided to discontinue the planned contract and switch the program to a research and development effort, although it was still possible that a paraglider could be included in a late Gemini mission. On May 5, North American was awarded a one-year $20 million contract for the Paraglider Landing System Program. The company was supposed to complete the design, development, and testing, and produce a prototype wing, but would not begin production. Responsibility for oversight of the program shifted from the Gemini program office to NASA’s Flight Research Center at Edwards Air Force Base in California. [1]

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #47 on: 09/30/2025 06:47 pm »
Well, sheesh, everything is all connected somehow...

Doing a bit of follow-up on this Gemini topic and obtained some photos of boilerplate capsules being dropped out of the back of USAF C-119 aircraft. These were dropped by the 446th Airlift Wing, then the 446th Troop Carrier Wing. The 446th started working with NASA in October 1961 at Ellington Field, using C-119Js. The C-119J had been equipped to recover the Discoverer spacecraft brought back from orbit (really a cover for the CORONA reconnaissance program). So I looked at when the 6594 Test Group in Hawaii got rid of their C-119Js in favor of C-130s, and it was September 1961. I had no idea that the planes went from recovering satellites to dropping satellite test vehicles.

Short article about that next week.

Satellite recovery group was discussed here, but there might be a more recent thread on it that I have not found:

https://forum.nasaspaceflight.com/index.php?topic=17198.0
« Last Edit: 09/30/2025 06:48 pm by Blackstar »

Offline laszlo

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Re: The Gemini paraglider / Rogallo Wing
« Reply #48 on: 10/01/2025 11:33 am »
Great series. I just finally got a chance to read part 3. It was an excellent read with some fun facts. It really is a shame that the tech never made it to space. It would have been fun to watch a spacecraft returning under an inflatable wing.

I did have one minor nit to pick, though. Quick Draw McGraw was a horse, not a dog. I think you may have been confusing him with Huckleberry Hound, also a Hanna-Barbera cartoon character, also voiced by Daws Butler. I have fond memories of swinging from a rope tied to a tree in our yard trying to hit my sister with a cardboard guitar while yelling "KABONG!" and trying not to fall off the rope. My success rate was about the same as the paraglider's.

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #49 on: 10/01/2025 12:20 pm »
Great series. I just finally got a chance to read part 3. It was an excellent read with some fun facts. It really is a shame that the tech never made it to space. It would have been fun to watch a spacecraft returning under an inflatable wing.

I did have one minor nit to pick, though. Quick Draw McGraw was a horse, not a dog. I think you may have been confusing him with Huckleberry Hound, also a Hanna-Barbera cartoon character, also voiced by Daws Butler. I have fond memories of swinging from a rope tied to a tree in our yard trying to hit my sister with a cardboard guitar while yelling "KABONG!" and trying not to fall off the rope. My success rate was about the same as the paraglider's.

I'll fix the horse/dog thing.

I'm not sure that the paraglider ever could have been made to work reliably enough for an astronaut mission.

Offline leovinus

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Re: The Gemini paraglider / Rogallo Wing
« Reply #50 on: 10/01/2025 01:59 pm »
Another wildcard. At NARA Philadelphia
https://history.arc.nasa.gov/hist_pdfs/guides/nara/rg255_langley.pdf
it says

File Code   Subject               Date            Box
A317-1B    Flexikite Concept 1959-09/62 458-459

with a footnote

[86] Flexikite Concept-Paragliders-Sailplanes

It may or may not have something relevant. You probably have to go in person too check .

Offline leovinus

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Re: The Gemini paraglider / Rogallo Wing
« Reply #51 on: 10/01/2025 03:48 pm »
Another image from a French magazine

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #52 on: 10/04/2025 06:20 pm »
Although my paraglider series is over, I will have a short postscript article next week with a few more photos, from 1962 and apparently from 1965.

There were tests conducted in 1962 equipping a Gemini boilerplate with solid descent rockets that fired 10 feet above the ground. This was to test a "soft" landing like the Soviets developed for Soyuz. The 1965 tests involved the El Kabong vehicle, which I discussed in part 3.

The 1962 tests were conducted at Gary Air Force Base, which was closed in 1963.

https://www.tshaonline.org/handbook/entries/gary-air-force-base



Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #53 on: 10/05/2025 04:13 pm »
Just discovered that there was an old thread on this topic. These two threads should probably be merged:

https://forum.nasaspaceflight.com/index.php?topic=12953.60


Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #54 on: 10/05/2025 04:34 pm »
I just turned in my paraglider postscript article with a few more images. My series (three and a half parts) focused primarily on the testing, not the technology. It is possible for another writer to go deeper into the technology and the different designs of wings. I assume that there were also changes in the control systems (how they pulled the wires), but I didn't see much about that.

Something I saw in one of the documents but cannot re-find is a short description of braking rockets for the Apollo Command Module. That was at the end of a collection of papers on the paraglider and other soft landing technologies. If anybody remembers where that is, please let me know.

Here's a nice chart showing the lift/drag for the paraglider designs. The design being developed for Gemini had a conical canopy and inflated tube, so it was at the middle bottom of this chart.
« Last Edit: 10/05/2025 04:44 pm by Blackstar »

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #55 on: 10/07/2025 11:52 am »
https://thespacereview.com/article/5072/1

Gemini’s wing and a prayer: Postscript
by Dwayne A. Day
Monday, October 6, 2025

NASA’s effort to develop a land recovery system for the Gemini spacecraft in the early 1960s was an extensive program eventually involving hundreds of test flights and different variants of piloted and unpiloted vehicles. Most of the work focused on testing the Rogallo Wing, also known as the paraglider (and sometimes the "parawing”), of which different designs were flown. But these were not the only projects undertaken by NASA to develop ways to land a capsule on the ground. (See “Gemini’s wing and a prayer (part 1): Rogallo Wings, the Paresev, and crashes in the desert,” The Space Review, September 8, 2025; “(part 2): parachutes, paragliders, and more crashes in the desert,” and “(part 3): boilerplates and El Kabong.”)

Much less known and less documented were NASA efforts to test alternate parachute technologies. These included the parasail tests in the latter 1960s. But there were also additional projects, and one of them had a connection to another, classified space project.

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #56 on: 10/13/2025 05:03 pm »
I wrote a bunch of articles about the paraglider and was surprised this morning to see "paraglider" in a headline in my news feed. This article is several days old. But this is an unexpected use:

https://www.bbc.com/news/articles/cge2l1xj2zdo

At least 24 killed as army paraglider bombs Myanmar Buddhist festival
BBC Burmese, Koh Ewe and Jonathan HeadSouth East Asia correspondent

At least 24 people were killed and 47 wounded while protesting against Myanmar's military government after an army motorised paraglider dropped two bombs on the crowd, a spokesperson for the government-in-exile told BBC Burmese.

The military attacked on Monday evening as around 100 people gathered in Chaung U township in central Myanmar for a national holiday.



****************************

Somebody wrote a comment below one of my articles that the "Rogallo Wing" is not really used anymore. I suspect that the definition of "paraglider" is rather wide and encompasses different wing designs. And there are motorized and non-motorized versions.

Offline ccdengr

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Re: The Gemini paraglider / Rogallo Wing
« Reply #57 on: 10/13/2025 05:18 pm »
I suspect that the definition of "paraglider" is rather wide and encompasses different wing designs.
In current usage, "paraglider" means no rigid structure and "hang glider" means rigid structure, and a "parasail" is towed from the ground.  See https://en.wikipedia.org/wiki/Hang_gliding and https://en.wikipedia.org/wiki/Paragliding and https://en.wikipedia.org/wiki/Parasailing

Offline Fequalsma

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Re: The Gemini paraglider / Rogallo Wing
« Reply #58 on: 10/17/2025 03:42 pm »
There was a neat program the other night on the Rogallo family, wing and legacy.  The OBX PBS station had interviews with his daughters and their experiences.

Offline Blackstar

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Re: The Gemini paraglider / Rogallo Wing
« Reply #59 on: 10/17/2025 05:08 pm »
There was a neat program the other night on the Rogallo family, wing and legacy.  The OBX PBS station had interviews with his daughters and their experiences.

Thanks for the tip:

https://www.pbs.org/video/wingman-the-francis-rogallo-story-asjcio/


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