INVESTIGATION OF PROPELLER SLIPSTREAM EFFECTS ON WING PERFORMANCE

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Abstract:

A theoretical and experimental study was conducted to determine the effects of propeller slipstream on wing performance. Previously developed theoretical analyses were expanded and modified to account for radial variation of the propeller slipstream velocity. The experimental program consisted of wind tunnel tests conducted with a motor-propeller system mounted on a semispan wing model. The wing model utilized has a chord to propeller diameter of 0.46, an aspect ratio of 6.37 3.18 for semispan, a taper ratio of 1.0, and a NACA 0015 airfoil section. The wing model has eight floating wing segments with and without a 45-degree simulated split flap. Located within each floating wing segment is a three-component strain gage balance to provide measurements of lift, drag, and pitching moment. The measurements of total wing lift, drag, and pitching moment were obtained with the six-component main wind tunnel balance. The test data obtained included the effects of the variation of propeller slipstream velocity by utilizing two propellers of different geometries. Propeller rotation for all tests was down at the wing tip. The experimental and theoretical results are compared in general, good correlation is observed.

Author(s):
George, M. ; Kisielowski, E.
Author Organization(s):
DYNASCIENCES CORP BLUE BELL PA
Descriptive Note:
Technical rept.
Pagination:
0212

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
DCR-234, USAAVLABS-TR-67-67
Contract/Grant Number(s):
DA-44-177-AMC-394(T)
Task Number(s):
1F125901A14231
Project Number(s):
DA-1F125901A142
Monitor Series:
TR-67-67, USAAVLABS
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_7.2.1_Mitigate Lethal Effects; JCA_7.2_Mitigate; JCA_7_Protection; JCA_5_Command and Control; JCA_5.3_Planning; JCA_5.1.1_Establish and Maintain Unity of Effort with Mission Partners; JCA_5.1_Organize; JCA_1.2.5_Lessons Learned; JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_5.5.2_Task; JCA_5.5_Direct
Modernization Areas:
Microelectronics
Communities of Interest:
Human Systems
Descriptor(s):
*AERIAL PROPELLERS, *VERTICAL TAKEOFF AIRCRAFT, ASPECT RATIO, DRAG, INTERACTIONS, LIFT, MODEL TESTS, MOMENTS, PERFORMANCE(ENGINEERING), PITCH(MOTION), TAPER, TILT WINGS, WIND TUNNEL MODELS
Field(s)/Group(s):
Aerodynamics, VSTOL
Keyword(s):
SLIPSTREAM
Report Date:
1967 Nov 01