Methods For Analyzing Flight Vehicles During The Taxi Condition

Item

Title
Methods For Analyzing Flight Vehicles During The Taxi Condition
Description
Methods are developed for the prediction of ground taxiing loads for advanced flight vehicles. The theory presented is generally applicable to determining the taxiing response of vehicles operated on prepared or unprepared terrain with randomly distributed surface undulations. The vehicle, with many degrees of flexibility and nonlinearities of the shock strut, is represented in a generalized LaGrangian coordinate system. Nonlinear solutions are obtained in closed analytical form, and on analog and digital computers, to various degrees of approximation for taxiing over an existing runway profile. Equivalent linearized transfer functions are developed for comparison on the basis of power and cross spectral densities, load occurrences, and probabilities for a variety of speeds and nonlinear parameters. Test data are used to substantiate theoretical results where applicable.
Date
1962
Index Abstract
Contrails and DTIC
Photo Quality
Incomplete
Report Number
ASD TR 61-177
Creator
Theisen, J. G.
Corporate Author
Lockheed-Georgia Company
Laboratory
Flight Dynamics Laboratory
Extent
317
Identifier
AD0273305
AD0273305
Access Rights
OTS
Distribution Classification
1
Contract
AF 33(616)-7646
DoD Project
1367
DoD Task
13451
DTIC Record Exists
Yes
Distribution Change Authority Correspondence
None
Report Availability
Full text available by request
Date Issued
1962-01
Abstract
Methods are developed for the prediction of ground taxiing loads for advanced flight vehicles. The theory presented is generally applicable to determining the taxiing response of vehicles operated on prepared or unprepared terrain with randomly distributed surface undulations. The vehicle, with many degrees of flexibility and nonlinearities of the shock strut, is represented in a generalized LaGrangian coordinate system. Nonlinear solutions are obtained in closed analytical form, and on analog and digital computers, to various degrees of approximation for taxiing over an existing runway profile. Equivalent linearized transfer functions are developed for comparison on the basis of power and cross spectral densities, load occurrences, and probabilities for a variety of speeds and nonlinear parameters. Test data are used to substantiate theoretical results where applicable.
Publisher
Wright-Patterson Air Force Base, OH : Flight Dynamics Laboratory, Aeronautical Systems Division, Air Force Systems Command, United States Air Force
AD Number
AD 273306
Cover Price
$5.00
Type
report
Provenance
Bombardier/Aero
Lockheed Martin Missiles & Fire Control
Subject
Aircraft
Hypersonic Vehicles
Aircraft Landings
Analog Computers
Computer Programming
Damping
Differential Equations
Digital Computers
Dynamics
Integral Equations
Landing Gear
Load Distribution
Mathematical Analysis
Runways
Statistical Analysis
Takeoff
Format
xxxi, 318 pages : ill. ; 28 cm.
Corporate Report Number
ER 5179
Distribution Conflict
No