Accession Number:

AD0763437

Title:

Studies in Transonic Flow I. Transonic Area Rule: Bodies,

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s):

• Cole,Julian D.

Report Date:

1972-08-01

Pagination or Media Count:

21.0

Abstract:

The area rule is derived on the basis of the asymptotic transonic small-disturbance expansion for slender bodies. Matching of expansions valid in the near-field and the far-field is essential to the result. Some higher order terms in the near-field are calculated in order to apply the momentum theorum consistently. The results agree with those previously obtained that the overall drag is the same as that of a body of revolutions having the same distribution of cross-section area whenever either the body is effectively pointed at the tail the streamwise rate of change of cross-section is zero at the tail. Author

Descriptors:

• (*SLENDER BODIES
• *TRANSONIC CHARACTERISTICS)
• (*DRAG
• AFTERBODIES)
• ASYMPTOTIC SERIES
• PERTURBATION THEORY
• AERODYNAMIC CONFIGURATIONS
• STATISTICAL DISTRIBUTIONS
• MATHEMATICAL MODELS
• EQUATIONS OF MOTION
• INTEGRAL EQUATIONS
• FLOW FIELDS
• FUSELAGES

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE