Accession Number : ADP005918

Title :   Air Intake Aerodynamics,

Corporate Author : ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRAN CE)

Personal Author(s) : Jell, C. S.

Report Date : APR 1988

Pagination or Media Count : 61

Abstract : Effective operation of airbreathing missiles is strongly dependent on the efficiency of the air intake system and its ability to supply the engine with air of adequate quality at all required flight conditions while minimising any undesirable effects that the intakes may have on the overall aerodynamic characteristics of the missile. This paper describes the role of the intake in the propulsion system of turbojet and ramjet powered missiles and addresses both the internal and external aerodynamic aspects of the induction system. The features of various types of air intake commonly used for subonic and supersonic operation are discussed. The causes and effects of flow instability and flow non-uniformity at engine entry are considered and the operational relationship between the engine intake is shown. Three major aspects of intake installation are discussed: the influence of the missile body flowfield on internal performance; the forces and moments generated by the internal aerodynamic characteristics of the missile.

Descriptors :   *AIR INTAKES, TURBOJET INLETS, RAMJET INLETS, AERODYNAMIC CHARACTERISTICS, FLOW FIELDS, GUIDED MISSILE COMPONENTS, AIR FLOW, INDUCTION SYSTEMS, SUBSONIC FLIGHT, SUPERSONIC FLIGHT, NONUNIFORM FLOW, FAIRINGS, GUIDED MISSILES, GREAT BRITAIN.

Subject Categories : Fluid Mechanics
      Jet and Gas Turbine Engines
      Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE