Accession Number:

AD0274585

Title:

EFFECTS OF FOREBODY LENGTH ON THE STABILITY AND CONTROL CHARACTERISTICS AT A MACH NUMBER OF 2.01 OF A CANARD AIRPLANE CONFIGURATION WITH A TRAPEZOIDAL ASPECT-RATIO-3 WING

Descriptive Note:

Corporate Author:

NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Personal Author(s):

Report Date:

1962-04-01

Pagination or Media Count:

1.0

Abstract:

A study was conducted in the Langley 4- by 4-foot supersonic pressure tunnel at a Mach number of 2.01 to determine the stability and control characteristics of a canard airplane configuration equipped with a trapez i al aspect-ratio-3 wing. Three bodies having length-diameter ratios of 9.45, 11.1, and 12.5 were investigated. The ratio of canard exposed area to wing total area was 0.0707. The model was equipped with a single, swept, body-mounted vertical tail. The experimentally determined variations of control effectiveness and longitudinal stability parameter wit canard volume were in reasonably close agreement with estimated variations. As the body length increased, the maximum trimmed values of lift-drag ratio LD decreased at low stability levels and increased at high stability levels. At low angles of attack, directional stability decreased with increasing body length. With increasing angle of attack, an additional decrease in directi nal stability occurred because of a decrease in tail contribution which became progressively worse as the body length increased. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE