LR91 is a rocket motor that is used in the 2nd stage of the Titan-23G space...
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LR91 is a rocket motor that is used in the 2nd stage of the Titan-23G space launcher. This motor uses two liquid propellants: nitrogen tetroxide (N₂0,) and Aerozine 50 (a 1:1 mixture of hydrazine (N₂H₁) and dimethyl- hydrazine (C₂H,N₂)). Assume that it is an ideal rocket motor with a nozzle expansion ratio (^/Ath) of 49, combustion chamber pressure and temperature are 5.6 MPa and 3400K. The exhausted gaseous products of the combustion have y = 1.3 and R = 390.4 1/(kg-K). Determine: a) The altitude at which the nozzle is designed for optimal expansion? b) If the nozzle exit diameter is 1.6 m, determine the nozzle throat diameter, mass flow, and the ideal thrust at the optimal altitude? 6.1-9.2 m Payload 7.3m 21.4m 2nd stage (LR91 motor) 1st stage (LR67 motor) LR91 is a rocket motor that is used in the 2nd stage of the Titan-23G space launcher. This motor uses two liquid propellants: nitrogen tetroxide (N₂0,) and Aerozine 50 (a 1:1 mixture of hydrazine (N₂H₁) and dimethyl- hydrazine (C₂H,N₂)). Assume that it is an ideal rocket motor with a nozzle expansion ratio (^/Ath) of 49, combustion chamber pressure and temperature are 5.6 MPa and 3400K. The exhausted gaseous products of the combustion have y = 1.3 and R = 390.4 1/(kg-K). Determine: a) The altitude at which the nozzle is designed for optimal expansion? b) If the nozzle exit diameter is 1.6 m, determine the nozzle throat diameter, mass flow, and the ideal thrust at the optimal altitude? 6.1-9.2 m Payload 7.3m 21.4m 2nd stage (LR91 motor) 1st stage (LR67 motor)
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To determine the altitude at which the nozzle is designed for optimal expansion we can use the isentropic flow relations and the given properties of the exhaust gases a The altitude at which the nozzl... View the full answer
Related Book For
Chemistry The Central Science
ISBN: 978-0321696724
12th edition
Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward
Posted Date:
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