Parachute -forces
Parachute -forces
(OP)
Hi All,
I'm trying to get a feel for the opening shock g-load in various parachutes. I've found NACA TN 2051 on their server, and it seems from this the jolt would be in the order of 2g. Anybody with knowledge or a literature tip out there?
I'm trying to get a feel for the opening shock g-load in various parachutes. I've found NACA TN 2051 on their server, and it seems from this the jolt would be in the order of 2g. Anybody with knowledge or a literature tip out there?





RE: Parachute -forces
Barry1961
RE: Parachute -forces
payload, velocity on opening, altitude on opening, air density on opening, type of chute (square/round), exhaust opening(s), steerable/non steerable, chute square area, aerodynamics of chute, packing method, deployment method (static line/pull cord/hand deploy/braking chutes), aircraft speed, air movement (stable/descending/thermal)
I remember watching a doco on chutes for the Mars lander. Chutes would not consistently open correctly to be reliable. After much testing and hair pulling they finally bought in chute design experts. The exhaust hole in the centre was the culprit.
Have fun
Kerry
RE: Parachute -forces
RE: Parachute -forces
RE: Parachute -forces
http://ntrs.nasa.gov/index.cgi?method=search&limit=25&offset=0&mode=simple&order=DESC&keywords=parachute%0D%0A
NASA has done extensive analysis and testing of parachute recovery systems for all of the previous manned spaceflights as well as the Mars Rover. Ditto the Soviets for their Soyuz program.
TTFN
RE: Parachute -forces
Someone, most likely NASA, will have done some maths on the effect. Fun stuff air...
Mart
RE: Parachute -forces
http://brsparachutes.com/CI_history.mgi
RE: Parachute -forces
RE: Parachute -forces
What's the input? I assume the output(s) are accels. I'd like to look at the data if possible. I have an upcomming report using subspace analysis on flight data; that may work on your data.
J. Vorwald