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
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 L/D 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1962
- Accession Number
- AD0274585
Entities
People
- Cornelius Driver
- M. Leroy Spearman
Organizations
- National Aeronautics and Space Administration