Thermodynamics and Propulsion
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9. Introduction to Propulsion
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III
PROPULSION
Subsections
9
. Introduction to Propulsion
9
.
1
Goal: Create a Force to Propel a Vehicle
9
.
2
Performance parameters
9
.
3
Propulsion is a systems endeavor
10
. Integral Momentum Theorem
10
.
1
An Expression of Newton's 2
nd
Law
10
.
2
Application of the Integral Momentum Equation to Rockets
10
.
3
Application of the Momentum Equation to an Aircraft Engine
11
. Aircraft Engine Performance
11
.
1
Overall Efficiency
11
.
2
Thermal and Propulsive Efficiency
11
.
3
Implications of propulsive efficiency for engine design
11
.
4
Other expressions for efficiency -
and SFC
11
.
5
Trends in thermal and propulsive efficiency
11
.
6
Performance of Jet Engines
11
.
6
.
1
Notation and station numbering
11
.
6
.
2
Ideal Assumptions
11
.
6
.
3
Ideal Ramjet
11
.
6
.
3
.
1
Thrust
11
.
6
.
3
.
2
Fuel Air Ratio
11
.
6
.
3
.
3
Specific impulse,
11
.
6
.
3
.
4
Representative performance values
11
.
6
.
3
.
5
Recapitulation
11
.
6
.
4
Turbojet Engine
11
.
6
.
5
Effect of Departures from Ideal Behavior
11
.
6
.
5
.
1
Parameters reflecting design choices
11
.
6
.
5
.
2
Parameters reflecting the ability to design and execute efficient components
11
.
7
Performance of Propellers
11
.
7
.
1
Overview of propeller performance
11
.
7
.
2
Application of the Integral Momentum Theorem to Propellers
11
.
7
.
3
Actuator Disk Theory
11
.
7
.
4
Dimensional Analysis
11
.
7
.
4
.
1
Thrust Coefficient
11
.
7
.
4
.
2
Torque Coefficient
11
.
7
.
4
.
3
Efficiency
11
.
7
.
4
.
4
Power Coefficient
11
.
7
.
4
.
5
Typical propeller performance
11
.
8
Muddiest points on Chapter 11
12
. Energy Exchange with Moving Blades
12
.
1
Introduction
12
.
2
Conservation of Angular Momentum
12
.
3
The Euler Turbine Equation
12
.
4
Multistage Axial Compressors
12
.
5
Velocity Triangles for an Axial Compressor Stage
12
.
6
Velocity Triangles for an Axial Flow Turbine Stage
13
. Aircraft Performance
13
.
1
Vehicle Drag
13
.
2
Power Required
13
.
3
Aircraft Range: the Breguet Range Equation
13
.
3
.
1
Relation of overall efficiency,
, and thermal efficiency
13
.
3
.
2
The Propulsion Energy Conversion Chain
13
.
4
Aircraft Endurance
13
.
5
Climbing Flight
14
. Rocket Performance
14
.
1
Thrust and Specific Impulse for Rockets
14
.
2
The Rocket Equation
14
.
3
Rocket Nozzles: Connection of Flow to Geometry
14
.
3
.
1
Quasi-one-dimensional compressible flow in a variable area duct
14
.
3
.
2
Thrust in terms of nozzle geometry
Next:
9. Introduction to Propulsion
Up:
16.Unified: Thermodynamics and Propulsion
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8.9 Muddiest Points on
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