Difference between revisions of "L2 Post-Flight Analyses"
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| − | The rocket was configured with the drogue chute located in the aft airframe and the forward chute located in the forward airframe with the aft airframe friction fitted onto the avionics bay. The Raven was programmed to fire a charge for the drogue chute at apogee (barometric), a redundant charge at apogee + 2.5 seconds | + | The rocket was configured with the drogue chute located in the aft airframe and the forward chute located in the forward airframe with the aft airframe friction fitted onto the avionics bay. The Raven was programmed to fire a charge for the drogue chute at apogee (barometric), a redundant charge at apogee + 2.5 seconds (the time determined by OpenRocket that the rocket would have fallen 100 feet), the main charge at 600 ft, and a redundant charge at 500 ft. Each charge well contained 1.5 g of Pyrodex. |
== Analysis == | == Analysis == | ||
Revision as of 03:16, 23 March 2016
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Cardinal II
Flight Summary
| Date of Flight | Feb. 6, 2016 |
| Launch Location | LUNAR |
| L2 Certification Attempt? | Yes |
| Launcher | Ian Gomez |
| Recovery Status | Recovered |
Rocket Specs
| Manufacturer | Giant Leap Rocketry Firestorm 54 |
| Length | |
| Weight | |
| Motor | |
| On-Board Avionics | Featherweight Raven 3 |
| Payload | 18" drogue, 36" main parachutes |
Analysis
The data from the Raven can be found on the Google Drive here
JARVIS I
Flight Summary
| Date of Flight | Feb. 20, 2016 |
| Launch Location | TCC |
| L2 Certification Attempt? | Yes |
| Launcher | Rebecca Wong |
| Recovery Status | Recovered, minimal damage to airframe |
Rocket Specs
| Manufacturer | Giant Leap Rocketry Firestorm 54 |
| Length | 69" |
| Weight | 5.1 lbs |
| Motor | Aerotech J425 |
| On-Board Avionics | Featherweight Raven 3 |
| Payload | 18" drogue, 36" main parachutes |
The rocket was configured with the drogue chute located in the aft airframe and the forward chute located in the forward airframe with the aft airframe friction fitted onto the avionics bay. The Raven was programmed to fire a charge for the drogue chute at apogee (barometric), a redundant charge at apogee + 2.5 seconds (the time determined by OpenRocket that the rocket would have fallen 100 feet), the main charge at 600 ft, and a redundant charge at 500 ft. Each charge well contained 1.5 g of Pyrodex.
Analysis
JARVIS I marked the 2nd attempted rocket flight with on-board electronics for the 2015-2016 year. Flight takeoff was nominal, however, at apogee, the drogue parachute did not deploy, nor did the main chute deploy at any lower altitude. Upon recovery, it was determined that the nose cone was ejected, which helped to increase drag substantially so the rocket did not lawn dart but fell laterally instead. The Raven was operational even after recovery, and the data retrieved from the altimeter concurred with the physical evidence that all ejection chargers successfully fired. The most reasonable hypothesis for the parachute ejection failure was that the size of the ejection charges was simply undersized.
The data from the Raven can be found on the Google Drive here