Accession Number:

ADB806674

Title:

Free-Spinning Wind-Tunnel Tests of a Low-Wing Monoplane with Systemic Changes in Wings and Tails. 4. Effect of Center-of-Gravity Location

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON DC

Personal Author(s):

• Seidman, Oscar
• Neilhouse, A. I.

Report Date:

1939-03-28

Pagination or Media Count:

22.0

Abstract:

Tests were performed to determine the effect of CG location on spin and recovery characteristics of a conventional low-wing monoplane with 24 different wing-tail combinations. It was found that the forward CG location steepens the spin, increases the spin coefficients, and improves recover, whereas the rearward location has an opposite effect on those characteristics. In general, there was a tendency for the rate of descent to increase and for the sideslip to become more outward as CG was moved forward.

Descriptors:

• *CENTER OF GRAVITY
• *AERODYNAMIC CHARACTERISTICS
• AIRCRAFT
• TAIL ASSEMBLIES
• DESCENT
• SIDESLIP
• SPINNING(MOTION)
• WINGS
• RECOVERY
• POSITION(LOCATION)
• COEFFICIENTS

Subject Categories:

• Aerodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE