Accession Number : ADP006070

Title :   Lifting Bodies - An Attractive Aerodynamic Configuration Choice for Hypervelocity Vehicles,

Corporate Author : AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH

Personal Author(s) : Draper, Alfred C. ; Buck, Melvin L.

Report Date : NOV 1987

Pagination or Media Count : 44

Abstract : The Flight Dynamics Laboratory has focused activity on Lifting Body aerodynamic research for the development of analytical, experimental, and design methods. Lifting bodies have a set of unique properties which make them particularly attractive for multiple applications. These unique properties including better aerodynamic efficiency at high altitudes and high velocities, reduced TPS weight, and efficient payload packaging are discussed. A brief chronology is given of the Lifting Body Configurations investigated by the Flight Dynamics Laboratory, along with their aeroperformance capabilities including the ASSET, PRIME, the X-24A,and the X-24B. Also included is a brief discussion of lifting body applications at supercircular velocities such as the SORTIE. A portion of the paper addresses the impact of basic geometric and component effects on aerodynamic performance parameters. These results were then translated into a unique aerodynamic configuration which eliminates the aft vertical fins without degrading the hypersonic lift-to-drag ratio while maintaining directional stability. Additionally, the paper addresses, their benefits and applicability. Specifically, the more significant methods such as the Hypersonic Arbitrary Body Program (HABP), PANAIR, Euler, Parabolized Navier Stokes (PNS), and Navier Stokes (NS) codes are discussed. Experimental capabilities and needs are discussed and finally, long terms goals for future lifting body configurations are assessed.

Descriptors :   *HYPERSONIC VEHICLES, *LIFTING BODIES, WING BODY CONFIGURATIONS, OPTIMIZATION, PAYLOAD, HYPERSONIC CHARACTERISTICS, LIFT TO DRAG RATIO, NAVIER STOKES EQUATIONS, AERODYNAMIC STABILITY, SYMPOSIA.

Subject Categories : Fluid Mechanics
      Research and Experimental Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE