# Question 16. An ideal rocket has the following characteristics: Chamber pressure Nozzle exit pressure Specific heat ratio : Average molecular mass Chamber temperature 27.2 atm 3 psia 1.20 21.0 lbm/lb-mol 4200 °F Determine the critical pressure ratio, the gas velocity at the throat, the expansion area ratio, and the theoretical nozzle exit velocity. Answers: 0.5645; 16. An ideal rocket has the following characteristics: Chamber pressure Nozzle exit pressure Specific heat ratio : Average molecular mass Chamber temperature 27.2 atm 3 psia 1.20 21.0 lbm/lb-mol 4200 °F Determine the critical pressure ratio, the gas velocity at the throat, the expansion area ratio, and the theoretical nozzle exit velocity. Answers: 0.5645; 3470 ft/sec; 14.8; and 8570 ft/sec.

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Transcribed Image Text: 16. An ideal rocket has the following characteristics: Chamber pressure Nozzle exit pressure Specific heat ratio : Average molecular mass Chamber temperature 27.2 atm 3 psia 1.20 21.0 lbm/lb-mol 4200 °F Determine the critical pressure ratio, the gas velocity at the throat, the expansion area ratio, and the theoretical nozzle exit velocity. Answers: 0.5645; 3470 ft/sec; 14.8; and 8570 ft/sec.
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Transcribed Image Text: 16. An ideal rocket has the following characteristics: Chamber pressure Nozzle exit pressure Specific heat ratio : Average molecular mass Chamber temperature 27.2 atm 3 psia 1.20 21.0 lbm/lb-mol 4200 °F Determine the critical pressure ratio, the gas velocity at the throat, the expansion area ratio, and the theoretical nozzle exit velocity. Answers: 0.5645; 3470 ft/sec; 14.8; and 8570 ft/sec.