Accession Number : ADP005863

Title :   Missile Datcom: Enhancements for Design Applications,

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

Personal Author(s) : Jenkins, Jerry E. ; Blake, William B.

Report Date : MAR 1989

Pagination or Media Count : 16

Abstract : Missile Datcom, a stability and control prediction code tailored to conceptual and preliminary design applications, has been developed. The program uses a component build-up approach based on the equivalent angle-of-attack concept. Simple vortex models are employed to allow for rapid and economical analyses. Two novel enhancements for design application that have been incorporated into the code are: a) Experimental data substitution. Accuracy improvements are attained by permitting the user to substitute experimental data for Missile Datcom predictions during the component build-up process. Its use is appropriate when more accurate data are available for vehicle components or for partial configurations. b) Configuration incrementing. This allows a user to more accurately investigate the effects of geometry changes on an existing configuration. In this case, experimental data for the complete baseline configuration are used to 'correct' Missile Datcom predictions for the modified vehicle. Since 1980, when the development of a comprehensive missile prediction code (Missile Datcom) was seriously contemplated at the Air Force Flight Dynamics Laboratory, a virtually continual stream of papers detailing its development progress and interim capabilities has been published in the open literature. Aerodynamic methods selected for implementation in Missile Datcom are summarized which also includes a discussion of their limitations and of proposed method extensions. (JES)

Descriptors :   *GUIDED MISSILES, ACCUMULATION, ACCURACY, AERODYNAMICS, ANGLE OF ATTACK, BASE LINES, CODING, CONFIGURATIONS, CONTROL, EXPERIMENTAL DATA, GEOMETRY, METHODOLOGY, MODELS, PREDICTIONS, SUBSTITUTES, VEHICLE EQUIPMENT, VORTICES.

Subject Categories : Guided Missiles

Distribution Statement : APPROVED FOR PUBLIC RELEASE