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Force and moment measurements on a 74 deg delta wing with an apex flap
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Buter, T. A. Rao, D. M. |
| Copyright Year | 1984 |
| Description | Results are presented of a subsonic experimental investigation of an apex flap concept on a 74 deg swept delta wing with trailing-edge flaps. The apex flap comprised approximately 6 percent of the wing area forward of a transverse hinge, allowing for upward and downward deflection angles from +40 deg to -20 deg. Upward deflection forces leading-edge vortex formation on the apex flap, resulting in an increased lift component on the apex area. The associated nose-up moment balances the nose-down moment due to trailing-edge flaps, resulting in sizeable increase in the trimmed lift coefficient particularly at low angles of attack. Nose-down apex deflection may be used to augment the pitch control for rapid recovery from high-alpha maneuvers. This report presents the balance data without analysis. |
| File Size | 1556805 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19850002610 |
| Archival Resource Key | ark:/13960/t09w58x39 |
| Language | English |
| Publisher Date | 1984-10-01 |
| Access Restriction | Open |
| Subject Keyword | Aerodynamics Deflection Aerodynamic Coefficients Aerodynamic Forces Lift Longitudinal Control Drag Reduction Moment Distribution Vortices Delta Wings Trailing Edges Wing Flaps Trailing Edge Flaps Balance Leading Edges Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
