Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Parachute Testing
#9
The Arboreal Phoenix continues to fly.

This past weekend at the sod farm, she proved Bob Utley wrong by actually flying straight without benefit of an F-14 launch platform up to 1,480 ft on a twice-stepped-down (54mm to 38mm, 38mm to 29mm) 29mm 6XL I-243.

She ejected her nose slightly before apogee using motor delay (slightly supplemented with some spare 4F I had sitting around not doing much), With a http://www.paramedichutes.com BLS-48 burrito wrapped in some Nomex, bound by a Jolly Logic chute release set to 400'. Data suggests chute was released 309 feet (where one sees a corresponding 5.74 G spike, with approximately 2 seconds of elevated g-forces, as chute is released, lines extend, and main fully inflates). Chute is released at 29.6625 seconds. Inflation complete at 31.4325 seconds, 242 feet. Landed at an altitude of 5 feet at 45.8320 seconds.

Main inflation time: 14.3995 seconds.
Starting altitude: 242 ft.
Ending altitude: 5 ft.
Total descent: 237 ft.

237 ft/14.3995 seconds=16.459 ft/sec.

48" diameter chute. Measured recovery weight of 6.283lb.
Cd: 1.553


I'm going to fly this thing until the centering rings rot out of it.

Later!

--Coop
Reply


Messages In This Thread
Parachute Testing - by Coop - 09-20-2016, 10:20 PM
RE: Parachute Testing - by FMarvinS - 09-26-2016, 01:46 PM
RE: Parachute Testing - by Coop - 10-30-2016, 10:13 PM
RE: Parachute Testing - by FMarvinS - 11-10-2016, 04:07 PM
RE: Parachute Testing - by Coop - 11-20-2016, 09:19 PM
RE: Parachute Testing - by Bat-mite - 11-21-2016, 11:27 AM
RE: Parachute Testing - by Coop - 11-21-2016, 09:42 PM
RE: Parachute Testing - by Coop - 03-10-2017, 04:01 PM
RE: Parachute Testing - by Coop - 06-28-2017, 11:48 PM

Forum Jump:


Users browsing this thread: 2 Guest(s)