jayrocketry
New Member
I did a recent test launch and the deployment charges seemed to go off at least 6 seconds after what appeared to be apogee. I'm not sure if this has to do with vent hole sizing or where the altimeters were placed in the electronics bay. Additionally, the main deployed at apogee which I assume was due to using too much black powder and not enough shear pins, and I believe the drogue deployment was so strong it sheared the main shear pins. It was 4 2-56 shear pins. I will upgrade from 2-56 to 4-40 shear pins.
My electronics bay is about 6 inches in diameter and 17 inches long. I sized the vent holes as stated in the Stratologger user manual and created four ports/holes each being 0.5" in diameter. The bay has 2 key switches but the switches fit snuggly and are epoxied so there should be little to no leak. Are my vent holes sized correctly? Additionally, I placed the altimeters a few inches away from the vent holes since I want them to stay away from heat and sunlight, and from any wind gusts that happen to enter the vent hole. Are the altimeters supposed to be placed exactly near the vent holes or they can be placed inches away from the vent holes? Thank you. I am flying to 10k
My electronics bay is about 6 inches in diameter and 17 inches long. I sized the vent holes as stated in the Stratologger user manual and created four ports/holes each being 0.5" in diameter. The bay has 2 key switches but the switches fit snuggly and are epoxied so there should be little to no leak. Are my vent holes sized correctly? Additionally, I placed the altimeters a few inches away from the vent holes since I want them to stay away from heat and sunlight, and from any wind gusts that happen to enter the vent hole. Are the altimeters supposed to be placed exactly near the vent holes or they can be placed inches away from the vent holes? Thank you. I am flying to 10k