This is a 2 stage rocket design o' me own all made from 3” Blue tube. T' First stage booster has two 29 mm engines and t' 2nd stage has a 38mm engine. It’s duel deployment runnin' a Raven 3 with a RockeTiltometer , shiver me timbers, all that in a 3” tube is a lot but can be done by usin' both sides o' t' sled. This is quite t' most complex rocket by far I’ve built. I’m findin' out that Rocksim is havin' a hard time with t' booster. Ya scallywag! When unloadin' one engine it still shows me t' 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 t' booster and Aerotech H245 in t' second stage. I’m goin' t' fly it without t' booster first with a I218R t' make sure it flies straight and we’ll go from there. Pucker factor should be high!
This is me first flame job and I was very happy with it, nay bad t' be done with spray can paint! I think it will look really hot on t' pad!
Weight Dry W/booster - 86 oz.
Weight Dry W/O booster - 72 oz.
More t' come!
| Flight Date: | 2013-08-31 |
| Rocket Name: | 222 (Scratch built 2 stage) |
| Flyer's Name: | Rodney Earp |
| Motors: | 2xG250/2xH242 |
| Expected Altitude: | 2,000 Feet |
| Wind Speed: | 2.00 mph |
| Launch Site: | ROSCO |
| Actual Altitude: | 2,576 Feet |
This was t' first flight with t' booster. T' two G250s fired within millisecends o' one another t' sent it up t' around 200ft. Begad! While coostin' t' booster came off and cleared t' main before t' H242 fired and went on it's way. I hope t' video comes out, it was very hard t' video. Arrr! I launched it 3 times, once with a H112J. Begad! All filghts were consistent and stable.
I was very pleased, it did what I wanted it t' everytime!
Raven 3 files\2stage 8-31-2013, 2-G250, H242-1.FIPa
Average PreLaunch Altitude (ft) = Val: 39.00
Average PreLaunch Axial (Gs) = Val: 1.16
Average PreLaunch Axial Offset = Val: 1.16
Axial Accel (Gs) = Min: -1.23 Max: 21.77
Baro (Atm) = Min: 0.9090 Max: 0.9986
Current Draw (A) = Min: 0.13 Max: 0.25
Flight Count = Val: 72.00
Lateral Accel (Gs) = Min: -7.82 Max: 10.89
Motor Ignition Time (sec) = Val: 0.168
Temperature (F) = Min: 107.03 Max: 107.25
Time (sec) = Min: 0.000 Max: 14.130
Velocity (Accel-Ft/Sec) = Min: 0 Max: 418
Volts Battery (V) = Min: 8.20 Max: 8.20
Volts Pyro 3rd (V) = Min: 0.00 Max: 0.00
Volts Pyro 4th (V) = Min: 0.00 Max: 3.19
Volts Pyro Apogee (V) = Min: 8.24 Max: 8.24
Volts Pyro Main (V) = Min: 8.24 Max: 8.26
[Altitude (Accel-Ft)] = Min: 0 Max: 2494
[Altitude (Baro-Ft-AGL)] = Min: 1 Max: 2576
[Altitude (Baro-Ft-ASL)] = Min: 40 Max: 2615
[Velocity (Accel-Ft/Sec)] = Min: -38 Max: 410
[Velocity (Accel-MPH)] = Min: -26 Max: 280
| Stage | Motor(s) |
|---|---|
| 1 | 2 x CTI 110G250-14A |
| 2 | 2 x Aerotech H242T |
 |
 |