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Bookmark or Share- What parachute to use for L3 rocket? - Rocketry ForumRocketry Warehouse 84 INCH STARCHUTE, Fruity Chute Iris Ultra 84" Parachute, or dual Rocketman RC9. What to use as a main in a 18-19LB rocket? The bag for the chute is a fruity chute 4" X 14" with approximately 149 cu" volume. Actually the post burn out will be around 24-25lbs pad weight 31-32lbs.
- Shear Pins | Rocketry Forum - Model Rocketry ForumsSay you're using 4-40 shear pins in a 4 inch rocket, that'd give you 175.6 lbs of force to retain and require 4 shear pins rounding to whole numbers. Now calculating BP charges (or CO2 in your case), I'd take the number of shear pins required and then use the maximum strength of the shear pins to get the required pressure to ensure the pins shear.
- Best GPS tracking system? - Model Rocketry ForumsPair it with a Black Aero receiver case and you can have a complete GPS tracker for less then $250. And that only requires you to carry one item to get you to rocket. I have used the featherweight and T3. Both work great and the featherweight has some cooler features. But you still have to carry a receiver and another device to find your rocket.
- Rocket Talk - Arduino-based radio flight data - Rocketry ForumThe idea would be to capture locally on the rocket at a high resolution and send packets down at intervals during launch (e.g., every x thousand feet) and then on descent transmit more data, so the hand-held has everything before it lands. The local Arduino on the rocket would log to memory and then to SD card.
- NAR Level 2 Certification. Rocket recommendationsI think that should be a huge consideration, the flying conditions at your field! Unless this rocket is going to be a cert flight only rocket, consider the motors you'll want to fly in the future and how those will do at your field. Like @Banzai88, I would also recommend a 4" diameter 54mm MMT, DD and weighing in at about 9 - 10 lbs. You'll be ...
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