The Ram-Wing Surface Effect Vehicle: Comparison of One Dimensional Theory with Wind Tunnel and Free Flight Results,

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Abstract:

The one-dimensional channel flow theory with leakage is described. Using this theory lift and drag laws for low aspect ratio ram-wings with side plates are derived. The one-dimensional channel flow theory is corroborated by wind tunnel tests of two ram-wings of significantly different geometry. Liftdrag ratios far superior to existing surface effect vehicles were measured. A series of successful free flight model tests show that complete vehicles designed from the one dimensional channel flow theory can be statically and dynamically stable over a ground clearance range from zero to infinity. Author

Author(s):
Gallington, Roger W. ; Miller, Mark K. ; Smith, Woodrow D.
Author Organization(s):
FRANK J SEILER RESEARCH LAB UNITED STATES AIR FORCE ACADEMY COLO
Pagination:
0038

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
SRL-TR-71-0012
Task Number(s):
790500
Project Number(s):
AF-7905
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*GROUND EFFECT MACHINES, ONE DIMENSIONAL FLOW, LEAKAGE(FLUID), DRAG, LIFT, STABILITY, FREE FLIGHT MODELS
Field(s)/Group(s):
Aerodynamics, Surface Effect Vehicles and Amphibious Vehicles
Keyword(s):
CHANNEL FLOW, *RAM WINGS
Report Date:
1971 Jul 01