Unsteady Aerodynamics for Advanced Configurations: Part IV - Application of the Supersonic Mach Box Method to Intersecting Planar Lifting Surfaces

Item

Title
Unsteady Aerodynamics for Advanced Configurations: Part IV - Application of the Supersonic Mach Box Method to Intersecting Planar Lifting Surfaces
Date
1965
Index Abstract
Coming Soon
Photo Quality
Not Needed
Report Number
FDL TDR 64-152 Part 4
Creator
Moore, M. T.
Andrew, L. V.
Corporate Author
North American Aviation, Incorporated
Laboratory
Air Force Flight Dynamics Laboratory
Extent
146
Identifier
AD0619396
Access Rights
Notice(s)
Distribution Classification
1
Contract
AF 33(657)-10399
DoD Project
1370
DoD Task
137003
DTIC Record Exists
No
Distribution Change Authority Correspondence
None
Abstract
Ashley's approach to mutual interference theory by source superposition methods has been applied to the prediction of supersonic air loads on intersecting thin lifting surfaces in steady of oscillatory motion. Steady loading is regarded as the special case of zero frequency of oscillation. Each surface may be oscillating in a mode of rigid or elastic vibration or linear combinations thereof. Evvard's diaphragm concept has been extended to treat the out-of-plane interference problem. As a result, any leading or side edge on any of the intersecting surfaces may be subsonic. The study reported herein has lead to the formulation of a method by which diaphragm regions can be selected that eliminate the need for calculating out-of-plane velocity potentials. Based on mutual interference theory, the method requires only the calculation of out-of-plane velocities so that tangential flow conditions may be met. The Mach-box method has been used to obtain an approximate solution to the problem. In following the aerodynamic influence coefficient procedure of Zartarian and Hsu, each surface and diaphragm is overlaid with a grid of rectangular Mach boxes, the diagonals of which are parallel to the Mach lines.
Report Availability
Full text available
Date Issued
1965-05
Provenance
AFRL/VACA
Type
report
Format
1 online resource
Media
FDLTDR64-152part04.pdf