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RP-1 is highly refined form of kerosene used for many first stage rocket engines. The average composition of it is indicated by CH1.9 a. What is the stoichiometric mixture ratio (MR) for RP-1 and oxygen? b. Now, you have a mixture of air and RP-1 with three times more air (in terms of moles) than is needed to burn all the fuel. How high is the final temperature? The heats of formation are given in the table below. In molar quantities, assume 1 mole of air is (O2+3.76N2). The reactants have a temperature of 25°C before combustion. You may use the average values of the specific heats for each constituent. C. Would the adiabatic flame temperature be lower or higher for a rocket engine that uses pure oxygen instead of air? Explain. Constituent Qf kJ/kmol @ 298 K Cp kJ/kmol K CH19 9,358 CO2 (g) -393,522 51.9 O2 (g) 0 34.0 N2 (g) 0 31.6 H₂0 (g) -241.827 40.6

RP-1 is highly refined form of kerosene used for many first stage rocket engines. The average composition of it is indicated by CH1.9 a. What is the stoichiometric mixture ratio (MR) for RP-1 and oxygen? b. Now, you have a mixture of air and RP-1 with three times more air (in terms of moles) than is needed to burn all the fuel. How high is the final temperature? The heats of formation are given in the table below. In molar quantities, assume 1 mole of air is (O2+3.76N2). The reactants have a temperature of 25°C before combustion. You may use the average values of the specific heats for each constituent. C. Would the adiabatic flame temperature be lower or higher for a rocket engine that uses pure oxygen instead of air? Explain. Constituent Qf kJ/kmol @ 298 K Cp kJ/kmol K CH19 9,358 CO2 (g) -393,522 51.9 O2 (g) 0 34.0 N2 (g) 0 31.6 H₂0 (g) -241.827 40.6

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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RP-1 is highly refined form of kerosene used for many first stage rocket engines. The average composition of it is indicated by CH1.9 a. What is the stoichiometric mixture ratio (MR) for RP-1 and oxygen? b. Now, you have a mixture of air and RP-1 with three times more air (in terms of moles) than is needed to burn all the fuel. How high is the final temperature? The heats of formation are given in the table below. In molar quantities, assume 1 mole of air is (O2+3.76N2). The reactants have a temperature of 25°C before combustion. You may use the average values of the specific heats for each constituent. C. Would the adiabatic flame temperature be lower or higher for a rocket engine that uses pure oxygen instead of air? Explain. Constituent Qf kJ/kmol @ 298 K Cp kJ/kmol K CH19 9,358 CO2 (g) -393,522 51.9 O2 (g) 0 34.0 N2 (g) 0 31.6 H₂0 (g) -241.827 40.6
Transcribed Image Text:RP-1 is highly refined form of kerosene used for many first stage rocket engines. The average composition of it is indicated by CH1.9 a. What is the stoichiometric mixture ratio (MR) for RP-1 and oxygen? b. Now, you have a mixture of air and RP-1 with three times more air (in terms of moles) than is needed to burn all the fuel. How high is the final temperature? The heats of formation are given in the table below. In molar quantities, assume 1 mole of air is (O2+3.76N2). The reactants have a temperature of 25°C before combustion. You may use the average values of the specific heats for each constituent. C. Would the adiabatic flame temperature be lower or higher for a rocket engine that uses pure oxygen instead of air? Explain. Constituent Qf kJ/kmol @ 298 K Cp kJ/kmol K CH19 9,358 CO2 (g) -393,522 51.9 O2 (g) 0 34.0 N2 (g) 0 31.6 H₂0 (g) -241.827 40.6
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