Effect of Sweepback and Aspect Ratio on Longitudinal Stability Characteristics of Wings at Low Speeds

reportActive / Technical Report | Accession Number: ADA801363 | Open PDF

Abstract:

Because of the interest in swept-back wings for high-speed airplanes an analysis has been made of readily available data on the longitudinal stability characteristics of swept-back wings at low speeds. The analysis indicated that the shape of the pitching-moment curve near the stall for swept-back wings is greatly dependent upon the aspect ratio. A chart has been prepared relating aspect ratio and sweepback that indicates the combinations of aspect ratio and sweepback alone. The effect of the addition of a horizontal tail behind a swept-back wing may be destabilizing and requires further investigation.

Author(s):
Shortal, Joseph A. ; Maggin, Bernard
Author Organization(s):
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS LANGLEY FIELD VA LANGLEY AERONAUTICAL LABORATORY
Descriptive Note:
Technical note
Pagination:
0021

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):
NACA-TN-1093
Monitor Series:
NACA
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning
Modernization Areas:
Directed Energy
Communities of Interest:
Air Platforms
Descriptor(s):
*SWEPTBACK WINGS, PITCH(MOTION), AIRCRAFT, TAIL ASSEMBLIES, HORIZONTAL STABILIZERS, AERODYNAMIC CHARACTERISTICS, ASPECT RATIO, VELOCITY, HIGH VELOCITY
Keyword(s):
ATI 8160, ATI COLLECTION
Report Date:
1946 Jul 01
Creation Date:
2011 May 04