# A Few Calculations

Am just looken for a little bit of help with a few calculations, a formula would be helpful.
Rocket type: Alpha Rocket mass w/out engine: 27.30g
Engine type: B4-4 Propellent mass : 8.33g Engine mass: 21g Thrust: 4.17N Firing time: 1.2sec Time delay: 4sec Chute ejects after 4sec
Calculation part Find Average Acceleration(m/s2) = 10.48987505m/s2 [up] Find Maximum Velocity(m/s) = 12.58785006m/s [up] Find Burnout Height(m) Find Distance during coast(m) Find Maximum height befor parachute egection(m) Find velocity at time of chute ejection(m/s) Find coast distance at ejection(m) Find total height at ejection(m)
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Try running it through wrasp and see if it agrees with you.
http://www.wrasp.com /
Frank Redaux wrote:

formula
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