Flight Log - 2012-09-01 - Rich DeAngelis's Bullpup Iris

This be t' standard Estes Bullpup 12D kit, modified with a small payload bay betwixt t' forward fins and t' nose cone, and a engine mount pulled slightly rearward t' allow for a metal spring-clip for t' motor.  It is internally modified with a Keelhaul®©™ 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 t' maiden flight. This time I made sure t' nay let t' clothespin snag t' rocket and hold it down on t' rod.  T' motor lit and burned for 8/10 second, with a peak acceleration o' 8.8 Gs – wow.  It averaged 3.3 Gs for t' burn, but only reached a speed o' 55 mph, turnin' moderately into t' wind. It then coasted for 2.3 seconds t' an apogee o' 124 feet.  Then it descended for another 1-1/2 seconds, droppin' 37 feet before t' ejection fired a little early than expected, but fortunate for this flight.


At 87 feet t' parachute deployed and t' rocket safely descended t' t' ground at 9 mph, landin' about 70 feet from t' pad.  Flight time 10.2 seconds. Good flight, but I be disappointed t' 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.

 

StageMotor(s)
1Estes B6-4

 

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