Talk:Edward L. Hoffman

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Draft copied from my sandbox. User:Peteschulz210 (talk) 01:02, 3 May 2020 (UTC)[reply]

Untitled

Thanks to Fuddle for the help starting Draft and moving practice lines from sandbox. User:Peteschulz210 (talk) 01:04, 3 May 2020 (UTC)[reply]

User:Peteschulz210 (talk) 02:24, 8 May 2020 (UTC)[reply]

On 28 April 1919 using the "Type A" 28 foot backpack parachute, volunteer Leslie Irvin, flying in a Smith piloted de Havilland DH9 biplane at 100 mph and 1500 feet above the ground, jumped (with a backup chute strapped to his chest) and manually pulled the ripcord fully deploying his chute at 1000 feet.^[1]Irvin became the first American to jump from an airplane and manually open a parachute in midair. The new chute performed flawlessly, though Irvin broke his ankle on landing. Floyd Smith filed the Type A patent No. 1,462,456 on the same day. The McCook Field team tested the Type A parachute with over 1000 jumps. These successful tests resulted in the Army requiring parachute use on all Air Service flights.^[2] ^[3] ^[4]

References

^ "An Early History of the Parachute". {{cite journal}}: Cite journal requires |journal= (help)
^ "Wright State University". {{cite journal}}: Cite journal requires |journal= (help)
^ Ladino, Marie. "Pulling the Rip Cord". USPTO.gov. Retrieved 7 May 2020.
^ "Milestones".

above section replaced by my rewrite of the 28 April 1919 jump on the Leslie L Irvin article pageUser:Peteschulz210 (talk) 17:09, 9 May 2020 (UTC)

[By_Jimmy_Stamp_SMITHSONIANMAG.COM_MARCH_7,_2013-1] "An Early History of the Parachute". {{cite journal}}: Cite journal requires |journal= (help)

[Wright_State_U-2] "Wright State University". {{cite journal}}: Cite journal requires |journal= (help)

[3] Ladino, Marie. "Pulling the Rip Cord". USPTO.gov. Retrieved 7 May 2020.

[airborne-sys.com-4] "Milestones".

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