This is a 2 stage rocket design of my own all made from 3” Blue tube. The First stage booster has two 29 mm engines and the 2nd stage has a 38mm engine. It’s duel deployment running a Raven 3 with a RockeTiltometer , all that in a 3” tube is a lot but can be done by using both sides of the sled. This is quite the most complex rocket by far I’ve built. I’m finding out that Rocksim is having a hard time with the booster. When unloading one engine it still shows me the results as if both were loaded and I can’t get a good feel for what loads would be safe if 1 didn’t light. I Finally decided that I’ll use 2 CTI G250 two grain VMAX motors in the booster and Aerotech H245 in the second stage. I’m going to fly it without the booster first with a I218R to make sure it flies straight and we’ll go from there. Pucker factor should be high!
This is my first flame job and I was very happy with it, not bad to be done with spray can paint! I think it will look really hot on the pad!
Weight Dry W/booster - 86 oz.
Weight Dry W/O booster - 72 oz.
More to come!
| Flight Date: | 2014-08-31 |
| Rocket Name: | 222 (Scratch built 2 stage) |
| Flyer's Name: | Rodney Earp |
| Motors: | 2xG250/I225 |
| Expected Altitude: | 3,000 Feet |
| Wind Speed: | 5.00 mph |
| Launch Site: | ROSCO |
| Actual Altitude: | 3,110 Feet |
I cleaned all the contacts and checked all the wires on the altimeter and Rocketiltometer . I also changed the igniter on the main and reload the G250s. This time everything work as planned and landed within 200’ of the tent.
| Stage | Motor(s) |
|---|---|
| 1 | 2 x CTI 110G250-14A |
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