Wind-Tunnel Investigation of Effect of Wing Location, Power, and Flap Deflection on Effective Dihedral of a Typical Single-Engine Fighter-Airplane Model with Tail Removed
Abstract
An investigation has been made of the effect of wing location, power, and flap deflection on the effective dihedral of a typical single-engine fighter-airplane model. The model, which was tested in the Langley 7- by 10-foot tunnel, had provisions for placing the wing in either one of two vertical locations. The wing was fitted alternatively with a full-span single slotted flap and with a full-span double slotted flap. The vertical and horizontal tails were removed for all tests. The results are presented as curves of lateral-stability derivatives against lift coefficient. The observed effects are explained qualitatively. In addition to showing the usual loss in effective dihedral caused by changing from a high-wing to a low-wing design, the results indicated that this loss is increased by the application of power. The adverse effect of power increased with lift coefficient. The effect of flap deflection, which was unfavorable for all cases, appeared to be slightly greater for the low-wing model.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1946
- Accession Number
- ADA801348
Entities
People
- Warren A. Tucker
Organizations
- National Advisory Committee for Aeronautics