Monday, November 7, 2011

Launch report pt. 2

My half-finished Wildman Drago flew on a G125 red CTI motor carrying a small digital camera, a $12 unit found all over Ebay as a "security camera" or keyring camera. My first ever video, posted a few months back, was on a Thunderbolt 38 by Giant Leap. Perhaps because of the Acme fin can, the Thunderbolt spins way too much for good footage. On a hunch, I put it on the Drago next and as you can see, there is nearly zero spin before recovery. This is certainly the rocket to fly for good video footage in the future.

This little motor is incredibly fast. It is comparable to a H800 or an I1600. Or even more shockingly, an N-60,000! Burnout was in .25 seconds at about 10 or 15 feet above the pad. The rocket did not get much altitude at all, because this is just an F and also because fast burn = lower altitude due to drag. The flight was particularly short because recovery was late, and the rocket hit highway speeds on the way back down before the 'chute came out. The nosecone fell off (actually it fell off in both of these flights, I need a much thicker screw eye) but was recovered close to the rocket. No damage despite the late ejection. I set the motor to 7 seconds, thinking the ultra-fast burn rate called for it. But 5 seconds would have been plenty. After landing, you can skip to the end to see recovery if you want. Again I have not edited these yet, this is raw footage. The recovery was very close to the pad as a result of the minimal altitude and late (by choice not flaw) ejection charge. How great are these Vmax motors? Have to also try the G250 (29mm) motor.

Expect another post tomorrow with a frame-by-frame breakdown of some good events in the videos.

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