Thrust E80 Static Motor Test Spring 2009. Forces on a Rocket

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Presentation transcript:

Thrust E80 Static Motor Test Spring 2009

Forces on a Rocket

The Question In the event of a crash landing of your rocket, what will be the effect on the instruments inside the rocket? (Translation) What is the velocity of impact? What is the impulse response of the rocket structure?

Solid rocket engine

Specific impulse

Static Motor Test

Thrust Analysis KINETICS (Non equilibrium processes) Fuel Burn Rate THERMODYNAMICS (Equilibrium processes) Exit conditions from nozzle

Kinetics of Solid Fuel Combustion

Thermodynamics of Flow Processes

Isentropic Flow through Nozzles For subsonic flow (Ma<1) For supersonic flow (Ma>1) For sonic flow (Ma=1)

Isentropic Flow of Perfect Gas Through Converging-Diverging Nozzle

Rocket thrust summary

E80 Static Motor Test Lab 1.Calibrate Load Cell 2.Measure Thrust Curve of Rocket Motor 3.Measure Average Mass Flow Rate 4.Compute combustion pressure assuming isentropic nozzle flow. Model burn rate of rocket fuel. 5.Estimate the impact velocity of your rocket.