I recently got my level 1 certification on a Aerotech H135. The flight was perfectly straight and had no issues.
Shortly after, I launched the same rocket (Mac Performance 3” Scorpion) on a H195. (Video attached) Predicted altitude was 1300 feet based on RockSim However, the rocket took a sharp turn off the pad and continued at a 45 degree angle. Luckily, the parachute deployed at the last second, and the rocket is still fly able.
I purchased a Cesaroni I180 too and I plan on flying it next weekend. I am not sure if it is safe to fly it on this motor without stability issues.
The stability margin of the rocket with the H195 was 2.29 and the margin with the I180 is 1.92.
There are a few things that may have caused this instability to happen.
1. The thrust of the H195 was much greater than the H135 + motor issues?
2. The coupler was not fully snug and seated into the airframe (picture attached). Due to the limited packing space and the large 48 inch parachute.
These are just guesses and I have really never had anything like this happen before. I am not sure what caused this and if I should make changes. Also, I am not sure if it is safe to fly in the I180. If you could give me your thoughts/suggestions that would be great!
Thank you
View attachment IMG_4054.MOV
Shortly after, I launched the same rocket (Mac Performance 3” Scorpion) on a H195. (Video attached) Predicted altitude was 1300 feet based on RockSim However, the rocket took a sharp turn off the pad and continued at a 45 degree angle. Luckily, the parachute deployed at the last second, and the rocket is still fly able.
I purchased a Cesaroni I180 too and I plan on flying it next weekend. I am not sure if it is safe to fly it on this motor without stability issues.
The stability margin of the rocket with the H195 was 2.29 and the margin with the I180 is 1.92.
There are a few things that may have caused this instability to happen.
1. The thrust of the H195 was much greater than the H135 + motor issues?
2. The coupler was not fully snug and seated into the airframe (picture attached). Due to the limited packing space and the large 48 inch parachute.
These are just guesses and I have really never had anything like this happen before. I am not sure what caused this and if I should make changes. Also, I am not sure if it is safe to fly in the I180. If you could give me your thoughts/suggestions that would be great!
Thank you
View attachment IMG_4054.MOV
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