This is the standard Estes Bullpup 12D kit, modified with a small payload bay between the forward fins and the nose cone, and a engine mount pulled slightly rearward to allow for a metal spring-clip for the motor. It is internally modified with a Kevlar shock cord mount and a much longer shock cord.
| Flight Date: | 2012-09-01 |
| Rocket Name: | Bullpup Iris |
| Kit Name: | Estes - Bullpup 12D {Kit} (007000) [1996-] |
| Flyer's Name: | Rich DeAngelis |
| Motors: | B6-4 |
| Launch Site: | Fort Indiantown Gap, PA |
| Actual Altitude: | 124 Feet |
Retry on the maiden flight. This time I made sure to not let the clothespin snag the rocket and hold it down on the rod. The motor lit and burned for 8/10 second, with a peak acceleration of 8.8 Gs – wow. It averaged 3.3 Gs for the burn, but only reached a speed of 55 mph, turning moderately into the wind. It then coasted for 2.3 seconds to an apogee of 124 feet. Then it descended for another 1-1/2 seconds, dropping 37 feet before the ejection fired a little early than expected, but fortunate for this flight.
At 87 feet the parachute deployed and the rocket safely descended to the ground at 9 mph, landing about 70 feet from the pad. Flight time 10.2 seconds. Good flight, but I was disappointed the B6 couldn’t lift it higher. At 124 feet on a B, I would never dare fly it on an A8 motor. I think a B6-2 would be better unless it is calm.
| Stage | Motor(s) |
|---|---|
| 1 | Estes B6-4 |
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