MAE 423 Homework #7: TurboFan
Posted: 04/02/2015, Due: 04/09/2015
Homework Guideline:
Three problems are assigned and all of them will be graded. Each graded problem will be worth 10 points.
Problem#1
A turbofan engine is being designed for a bypass ratio
MAE 423 Homework 9:
Rocket Performance
Posted: 04/30/2015, Due: 05/07/2015
Homework Guideline:
Three problems are assigned and two of them will be graded. Each one will be worth 10 points.
Problem#1 (10.3 of textbook)
A sounding rocket vehicle whose insta
MAE 423 Homework 9:
Rocket Performance
Posted: 04/30/2015, Due: 05/07/2015
Homework Guideline:
Three problems are assigned and two of them will be graded. Each one will be worth 10 points.
Problem#1 (10.3 of textbook)
A sounding rocket vehicle whose insta
MAE 423 Homework 10:
Electrical Rocket Propulsion & Space Missions
Posted: 05/07/2015
Homework Guideline:
This Homework will not be graded.
Problem#1
Show how to find the optimum specific impulse for an electrical propulsion system to be used
for missions
MAE 423 Homework #7: Turbofan
Posted: 04/02/2015, Due: 04/09/2015
Homework Guideline:
Three problems are assigned and all of them will be graded. Each graded problem will be worth 10 points.
Problem#1
A turbofan engine is being designed for a bypass ratio
MAE 423 Homework #3: Compressible Flow
Posted: 2/24/2015, Due: 03/03/2015
Homework Guideline:
Five problems are assigned, but only 3 will be graded. Each graded problem will be worth 10
points.
Problem#1
A Mach 2 flow passes through an oblique shock as sh
MAE 423 Homework #5: RamJet
Posted: 03/03/2015, Due: 03/12/2015
Homework Guideline:
Three problems are assigned and all of them will be graded. Each graded problem will be worth
10 points.
Problem#1
After verifying the derivation of Eq. (1) for the ideal
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MAE 423: Homework 3
Compressible Flow
Assigned: 02/28/17
Due: 03/07/17
Problem 1
The SR-71 cruises at Mach 3.2, flying through calorically perfect air (R = 287J/kg
K, = 1.4). Each of the engines has a spike (centerbody) coming out of the
nacelle. Its pur
MAE 423: Homework 7
Turbofans
Assigned: 04/06/17
Due: 04/13/17
Problem 1
An ideal turbofan with unmixed streams has a flight speed of Ma = 0.76. The ambient
static pressure and static temperature are 101.325 kP a and 288 K, respectively. The
total mass fl
MAE 423: Homework 1
Thermodynamics Review
Assigned: 02/09/17
Due: 02/16/17
Problem 1
Start with the following equation for the 1D energy equation.
1
1
(1)
h1 + u21 + q = h2 + u22
2
2
For an adiabatic flow, show that the stagnation temperature is constant
MAE 423: Homework 6
Turbojets
Assigned: 03/30/17
Due: 04/06/17
Problem 1
An ideal turbojet flies at sea level at Mach 0.75. The atmospheric static pressure and
temperature are 101.325 kP a and 288 K, respectively. It ingests 75 kg/s of air, and the
compre
MAE 423: Homework 4
Engine Performance
Assigned: 03/07/17
Due: 03/16/17
Problem 1
The Airbus A340 uses four CFM56-5C engines. This is the same engine type of
engine that also powers the Boeing 737 (though slightly different). While the
CFM56-5C is a turbo
MAE 423: Homework 2
Gas Mixtures
Assigned: 02/16/17
Due: 02/28/17
Problem 1
The molar analysis of a gas mixture at 25 o C and 0.15 M P a is 55% N2 , 30% CO2 ,
and 15% O2 . Determine the following:
(a) The analysis in terms of mass fractions
(b) The partia
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MAE 423: Homework 5
Ramjets
Assigned: 03/23/17
Due: 03/30/17
Problem 1
Refer to the ramjet schematic shown in Fig. 1. Consider this ramjet to be ideal,
that is, there are no losses throughout the engine. The flight Mach number is Ma .
Assume the ramjet fl