Designed specifically for the NAR B Cluster Altitude event. This was a ”qualified flight” mode, not expected to be competitive. Designed around an 18” BT-70 body tube with a 5x18mm cluster motor mount and a 4.25 inch rounded olive balsa nose cone. The design was not stable according to RocSim so the nose cone was modified to accept some ballast weight in the form of a large heavy screw eye. vent Holes were drilled in the body tube to provide good ambient air pressure to the altimeter.
| Flight Date: | 2018-08-08 |
| Rocket Name: | B Cluster Altitude |
| Flyer's Name: | Matthew Bond |
| Motors: | 5xB6-6 |
| Wind Speed: | 1.00 mph |
| Launch Site: | NARAM 60 |
| Actual Altitude: | 863 Feet |
Discovered that the nose cone I had prepped was too small for the body tube, and was slipping down into the tube. I wrapped a piece of Kevlar cord around the shoulder of the nose cone and taped in place. This kept the nose cone where it was supposed to be, but probably cost me a few feet in altitude. Prepped the cluster with my dwindling stock of long Q2G2 igniters. Flown off the standard launch rod. All 5 motors lit, beautiful straight boost, probably could have used less weight in the nose cone and cut the margin a little closer. Good chute at apogee, all 5 motors retained, qualified flight. Jolly Logic Altimeter 2 reported 836 feet, corrected to 862 feet / 263 meters. Didn’t think I could get a better flight from this rocket so I did not attempt a second flight
| Stage | Motor(s) |
|---|---|
| 1 | 5 x Estes B6-6 |
Sponsored Ads
 |
 |