Ebook: Aircraft Wake Turbulence and Its Detection: Proceedings of a Symposium on Aircraft Wake Turbulence held in Seattle, Washington, September 1–3, 1970. Sponsored jointly by the Flight Sciences Laboratory, Boeing Scientific Research Laboratories and the Air F
- Tags: Automotive Engineering
- Year: 1971
- Publisher: Springer US
- Edition: 1
- Language: English
- pdf
The combination of increasing airport congestion and the ad vent of large transports has caused increased interest in aircraft wake turbulence. A quantitative understanding of the interaction between an aircraft and the vortex wake of a preceding aircraft is necessary for planning future high density air traffic patterns and control systems. The nature of the interaction depends on both the characteristics of the following aircraft and the characteristics of the wake. Some of the questions to be answered are: What deter mines the full characteristics of the vortex wake? What properties of the following aircraft are important? What is the role of pilot response? How are the wake characteristics related to the genera ting aircraft parameters? How does the wake disintegrate and where? Many of these questions were addressed at this first Aircraft Wake Turbulence Symposium sponsored by the Air Force Office of Sci entific Research and The Boeing Company. Workers engaged in aero dynamic research, airport operations, and instrument development came from several count ries to present their results and exchange information. The new results from the meeting provide a current picture of the state of the knowledge on vortex wakes and their interactions with other aircraft. Phenomena previously regarded as mere curiosities have emerged as important tools for understanding or controlling vortex wakes. The new types of instability occurring within the wake may one day be used for promoting early dis integration of the hazardous twin vortex structure.
Content:
Front Matter....Pages i-xiii
Aircraft Wakes: A New Look at a Classical Problem....Pages 1-8
The Velocity of Viscous Vortex Rings....Pages 9-10
Studies in the Motion and Decay of Vortices....Pages 11-39
Transport of a Vortex Wake in a Stably Stratified Atmosphere....Pages 41-56
Split-Film Anemometer Sensors for Three-Dimensional Velocity-Vector Measurement....Pages 57-79
Sub-Scale Modeling of Aircraft Trailing Vortices....Pages 81-95
The Utility of Doppler Radar in the Study of Aircraft Wing-Tip Vortices....Pages 97-112
Application of Laser Doppler Systems to Vortex Measurement and Detection....Pages 113-124
An Analysis of Flight Measurements in the Wake of a Jet Transport Aircraft....Pages 125-136
Vortex Control....Pages 137-155
The Effect of a Drooped Wing Tip on Its Trailing Vortex System....Pages 157-169
Some Work at the Royal Aircraft Establishment on the Behaviour of Vortex Wakes....Pages 171-206
Span Loading and Formation of Wake....Pages 207-227
An Experimental Investigation of Trailing Vortices Behind a Wing with a Vortex Dissipator....Pages 229-242
Vortex Wake Development and Aircraft Dynamics....Pages 243-263
Measurements of Boeing 747, Lockheed C5A and Other Aircraft Vortex Wake Characteristics by Tower Fly-by Technique....Pages 265-285
Flight Evaluation of the Wing Vortex Wake Generated by Large Jet Transports....Pages 287-288
An Assessment of Dominant Mechanisms in Vortex-Wake Decay....Pages 289-304
Theoretical and Experimental Study of the Stability of a Vortex Pair....Pages 305-338
Structure of a Line Vortex in an Imposed Strain....Pages 339-354
Back Matter....Pages 595-602
A New Look at the Dynamics of Vortices with Finite Cores....Pages 355-388
Decay of an Isolated Vortex....Pages 389-411
Decay of a Vortex Pair behind an Aircraft....Pages 413-454
Results of Trailing Vortex Studies in a Towing Tank....Pages 455-472
Results of the Boeing Company Wake Turbulence Test Program....Pages 473-508
Aircraft Response to Turbulence Including Wakes....Pages 509-522
Airloads and Moments on an Aircraft Flying Over a Pair of Inclined Trailing Vortices....Pages 523-545
Aircraft Wake Turbulence Controllability Experiment....Pages 547-559
Fog Formation and Dispersal by Trailing Vortices....Pages 561-573
An Estimate of the Power Required to Eliminate Trailing Vortices by Suction....Pages 575-576
Panel Discussion....Pages 577-591
Back Matter....Pages 595-602
Content:
Front Matter....Pages i-xiii
Aircraft Wakes: A New Look at a Classical Problem....Pages 1-8
The Velocity of Viscous Vortex Rings....Pages 9-10
Studies in the Motion and Decay of Vortices....Pages 11-39
Transport of a Vortex Wake in a Stably Stratified Atmosphere....Pages 41-56
Split-Film Anemometer Sensors for Three-Dimensional Velocity-Vector Measurement....Pages 57-79
Sub-Scale Modeling of Aircraft Trailing Vortices....Pages 81-95
The Utility of Doppler Radar in the Study of Aircraft Wing-Tip Vortices....Pages 97-112
Application of Laser Doppler Systems to Vortex Measurement and Detection....Pages 113-124
An Analysis of Flight Measurements in the Wake of a Jet Transport Aircraft....Pages 125-136
Vortex Control....Pages 137-155
The Effect of a Drooped Wing Tip on Its Trailing Vortex System....Pages 157-169
Some Work at the Royal Aircraft Establishment on the Behaviour of Vortex Wakes....Pages 171-206
Span Loading and Formation of Wake....Pages 207-227
An Experimental Investigation of Trailing Vortices Behind a Wing with a Vortex Dissipator....Pages 229-242
Vortex Wake Development and Aircraft Dynamics....Pages 243-263
Measurements of Boeing 747, Lockheed C5A and Other Aircraft Vortex Wake Characteristics by Tower Fly-by Technique....Pages 265-285
Flight Evaluation of the Wing Vortex Wake Generated by Large Jet Transports....Pages 287-288
An Assessment of Dominant Mechanisms in Vortex-Wake Decay....Pages 289-304
Theoretical and Experimental Study of the Stability of a Vortex Pair....Pages 305-338
Structure of a Line Vortex in an Imposed Strain....Pages 339-354
Back Matter....Pages 595-602
A New Look at the Dynamics of Vortices with Finite Cores....Pages 355-388
Decay of an Isolated Vortex....Pages 389-411
Decay of a Vortex Pair behind an Aircraft....Pages 413-454
Results of Trailing Vortex Studies in a Towing Tank....Pages 455-472
Results of the Boeing Company Wake Turbulence Test Program....Pages 473-508
Aircraft Response to Turbulence Including Wakes....Pages 509-522
Airloads and Moments on an Aircraft Flying Over a Pair of Inclined Trailing Vortices....Pages 523-545
Aircraft Wake Turbulence Controllability Experiment....Pages 547-559
Fog Formation and Dispersal by Trailing Vortices....Pages 561-573
An Estimate of the Power Required to Eliminate Trailing Vortices by Suction....Pages 575-576
Panel Discussion....Pages 577-591
Back Matter....Pages 595-602
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