李苏克
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【电子书】Propellor Aerodynamics The History, Aerodynamics & Operation of Aircraft Propellers 1th 2015
Contents
Introduction
1 – The History of Aircraft Propellers
Airscrews
The First Airborne Props
The Wright Brothers
Aerodynamic Theories
Variable-pitch Propellers
Constant-speed Propellers
Spitfires and Hurricanes
Five-blades or Six
Counter &
Contra-rotating Props
Lockheed C-130 Hercules
De-ice for Props
Propeller Manufacturers
The First Turboprops
Supersonic Propellers
Record Breakers
Propulsors
Propfans
Conclusion
2 – Propeller Pitch
The Working Fluid
Propeller Terminology
Propeller Pitch
Helix Angle
Blade Angle & Twist
Experimental Pitch
Geometric Pitch
Slip
Brief Review
Advance/Diameter Ratio
Fixed-pitch Propellers
Variable Pitch & Constant
Speed Propellers
3 – Thrust & Efficiency
Propulsive Efficiency
Power to the Prop
Power Absorption
Activity Factor
Solidity
Prop Diameter
Number of Blades
Aspect Ratio
Prop Blade Loading
Prop Disc Loading
Propwash Thrust
Prop Blade Drag
Propeller Icing
4 – Effect on the Aircraft’s Stability
Prop Torque Force
Prop Location
Helical Propwash
‘P’ Factor
Gyroscopic Effect
Centreline Thrust
Minimum Control Speed (VMC)
Counter-rotating Propellers
Contra-rotating Propellers
5 – Prop Tip Speed & Noise
The Cause of Noise
High-speed Aerodynamics
Tip Speed
Tips, Blade Shape & Materials
Synchronizing
How Noisy are They
6 – Propeller Forces & Stress
Windmilling Prop Forces
Reverse Thrust Forces
Prop Stress
The Balanced Prop
7 – Turboprops, Propulsors & Propfans
Propulsors
Propfans
8 – Constant-speed Units
The Oil/Counterweight Type
The Beech & McCauley Types
The Hamilton Standard Type
Air/Oil Type
The Hydromatic CSU
The Curtiss Electric Propeller
9 – Propeller Operation
Governor Check
Running Square
Reducing power
Lock-on
Overspeed Condition
Windmilling
The Feathering Prop
Ground Feathering
Negative Torque System
Autofeathering
Simulated Zero Thrust
Reverse Thrust
Safety Around the Prop
Conclusion
