Accession Number : AD0449752

Title :   SECOND-ORDER FORCES AND PRESSURE DISTRIBUTION ON THREE-DIMENSIONAL BODIES BY REVERSE-FLOW INTEGRAL METHOD,

Corporate Author : JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s) : Sutera, S. P.

Report Date : MAY 1964

Pagination or Media Count : 41

Abstract : The general second-order reverse-flow relation derived by Clarke has been applied to fusiform bodies and to combinations of fusiform bodies and quasicylindrical wings. It is first shown that the second-order drag of an isolated fusiform body can be expressed in terms of the first-order forward and reverse flow over the body provided the angle of incidence is not too large. Two of these integral statements are inverted to yield information on the secondorder surface pressure distribution. The uninclined body is covered as a special case. The leading contribution of the interference field to the second-order drag is obtained from the reverse-flow relation. The result presumes that the second-order fields of the isolated body and wing are known in advance. The reverse flow due to a two-dimensional flat plate wing is then used to achieve an integral for the leading second-order contribution to the lift on a wing-body combination. (Author)

Descriptors :   (*FLAT PLATE MODELS, PRESSURE), DISTRIBUTION, THREE DIMENSIONAL FLOW, DELTA WINGS, CONICAL BODIES, PERTURBATION THEORY, WING BODY CONFIGURATIONS, INTERFERENCE, LIFT, NOSE CONES, DRAG, EQUATIONS, SUPERSONIC FLOW, MATHEMATICAL PREDICTION, INTEGRAL EQUATIONS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE