Is that stability graphic is fine?
- Thread starter Magin
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Nytrunner
Pop lugs, not drugs
That looks like the shift in CP due to passage through the transonic velocity zone.
based on "caliber" alone it looks ok, but your rocket looks very Long compared to its width. You may want to increase the margin to 2 througout the flight.
Do you have parachutes and payload hardware loaded in your simulation? Your ground-hit velocity is disastrously high in your results table
based on "caliber" alone it looks ok, but your rocket looks very Long compared to its width. You may want to increase the margin to 2 througout the flight.
Do you have parachutes and payload hardware loaded in your simulation? Your ground-hit velocity is disastrously high in your results table
Magin
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I have'nt finished designing the inside of rocket like(parachute,root chord), instead of this ı put some weight close to their place. For now my only worry is the stability during the flight. My other rocket whic ı am going planing to reach 9000 feet have same cp shift although it will not reach transonic velocity. Yeah you are right about lenght. I was just changing lenghs of rocket to overcome the cp shift.
Nytrunner
Pop lugs, not drugs
I would recommend increasing the fin span (distance from airframe to tip). That will noticeably move the CP aft.
I understand you have a height goal, so adding nose weight for stability is not your desired course of action, but it may be required if other design changes doesn't work. You have a very heavy motor in the rear to overcome.
Have you contacted the Tripoli chapter in Turkey? (I think it is in Istanbul?)
I understand you have a height goal, so adding nose weight for stability is not your desired course of action, but it may be required if other design changes doesn't work. You have a very heavy motor in the rear to overcome.
Have you contacted the Tripoli chapter in Turkey? (I think it is in Istanbul?)
Magin
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I wil definitly apply your advice thanks for that. Unfortunately there will be a rocket contest in Turkey and he is one of the juries.
