Forums: Skydiving: Skydiving History & Trivia:
First Ram Air Canopy

 


freefaller76  (Student)

Dec 8, 2003, 11:59 AM
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First Ram Air Canopy Can't Post

When was the ram air canopy first developed? How did it differ from today's canopies?


varmit  (D 8237)

Dec 11, 2003, 10:38 AM
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Re: [freefaller76] First Ram Air Canopy [In reply to] Can't Post

Actually some Divici drawings show crude ram air designs, but actual R& D started in the mid to late 60s. The first "jumpable" ram air canopy was probably the Volplane, which I believe was manufactored by Pioneer.

In this time period the slider had yet to be invented so each manufactorer came up with their own unique reefing system to slow the openings.

The Volplane had a small hydraulic cylinder (about 8" long) sewn to the bottom canopy skin. A 1" steel ring was sewn to each "A" line near the canopy line attachments. The rings were stacked into a crab claw fitting on the hydraulic cylinder. The fitting was closed and the cylinder pumped up to pressure with a handle attached to the cylinder. The more the cylinder was pressurized, the slower the opening - in theory. The original versions of this thing had really long lines, about 30 feet.

Another early "square" was a Barish Sailwing. This was a real oddball in that it was a single surface (no cells) canopy. It had really tall ribs attached to the bottom of the single skin that would trap enough air to inflate the thing- sometimes. These were probably the most unreliable canopy ever made.

By the early 70s there were numerous makers of squares. Some were real companies and some were just cottage shops making copies of other companies designs.

In general, most all of the marketed mains from the early 70s until the ZP days, were bulky to pack, slow flying, docile and reliable.


riggerrob  (D 14840)

Dec 25, 2003, 1:10 PM
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Re: [varmit] First Ram Air Canopy [In reply to] Can't Post

A Canadian-born engineer named Domina Jalbert built the first ram-air canopies. Jalbert started building kites, then powered parachutes and finally ram-air parachutes. Much of Jalbert's research was funded by the Department of Defence and done at Notre Dame University under the supervision of Prof. Nicoladius (sp?).

www.parafoils.com/jalbert/leo.htm
www.pro-pro.com/carlos/ppcqod068.htm

The first production ram-air parachutes were built - in the early 1970s - by Steve Snyder Enterprises (later Para-Flite) and North American Aerodynamics).


ripcordkid

Dec 31, 2003, 12:03 PM
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Re: [riggerrob] First Ram Air Canopy [In reply to] Can't Post

1969 actually


Unstable  (D 28930)

Jan 6, 2004, 12:16 AM
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Re: [varmit] First Ram Air Canopy [In reply to] Can't Post

In reply to:
In this time period the slider had yet to be invented so each manufactorer came up with their own unique reefing system to slow the openings.

It's amazing to look back and see these tremendously complicated solutions to slow down openings - a slider is such a SIMPLE device ----Tongue


slug  (B License)

Jan 6, 2004, 11:51 AM
Post #6 of 6 (1910 views)
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Re: [Unstable] First Ram Air Canopy [In reply to] Can't Post

In reply to:
In reply to:
In this time period the slider had yet to be invented so each manufactorer came up with their own unique reefing system to slow the openings.

It's amazing to look back and see these tremendously complicated solutions to slow down openings - a slider is such a SIMPLE device ----Tongue

Ropes & rings & a half hitchFrown

R.I.P.



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