Accession Number:

AD0856221

Title:

Mathematical Model for Long Cable Towed by Orbiting Aircraft

Descriptive Note:

Final rept.

Corporate Author:

NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AERO MECHANICS DEPT

Personal Author(s):

• Huang, Shih L.

Report Date:

1969-06-12

Pagination or Media Count:

44.0

Abstract:

A steady-state mathematical model which computes spatial configuration and tension along an orbiting towline has been developed. Numerical results are in agreement with existing flight test data. The model yields multi-valued solutions under certain operating conditions. Operations which avoid these troublesome regimes have been developed. The model cam be used to optimize the performance of operational systems. There are conditions where the desired verticality cannot be obtained with a standard constant diameter towline. Numerical results for a special stepped diameter towline illustrate how the desired high verticality and a reduction of tension can be achieved under such conditions by variation of the towline construction.

Descriptors:

• *TOWING AIRCRAFT
• *TOWING CABLES
• *TURNING FLIGHT
• AERODYNAMIC CONFIGURATIONS
• AERODYNAMIC LOADING
• COMPUTER PROGRAMS
• DRAG
• EFFICIENCY
• EQUATIONS
• FLIGHT CREWS
• FLIGHT TESTING
• FUEL CONSUMPTION
• MATHEMATICAL MODELS
• OPTIMIZATION
• SKIN FRICTION
• TENSILE PROPERTIES
• TOWED BODIES

Subject Categories:

• Military Aircraft Operations

Distribution Statement:

APPROVED FOR PUBLIC RELEASE