Accession Number:

ADA067927

Title:

Optimum Tail Fairings for Bodies of Revolution.

Descriptive Note:

Final rept.,

Corporate Author:

MCDONNELL DOUGLAS ASTRONAUTICS CO HUNTINGTON BEACH CALIF

Personal Author(s):

• Smith,A. M. O.
• Stokes,T. R. , Jr.
• Lee,R. S.

Report Date:

1979-03-01

Pagination or Media Count:

53.0

Abstract:

This report describes a computerized method that will design tails for bodies of revolution that satisfy the Stratford criterion for zero wall shear. Stratfords original two-dimensional solution is extended to axisymmetric flow in order to implement the procedure. The method involves simultaneous solution of the extended Stratford equation and the necessary boundary conditions through the use of an inverse potential flow program. Tails designed with this procedure can be categorized as follows 1 The entire tail is at incipient separation no skin friction 2 The pressure recovery is the most rapid possible 3 The resultant tail is the shortest possible. The final result is a unique geometry for given freestream conditions and boundary layer transition point. By unique, it is meant that any deviation from the ideal geometry will either cause extensive separation or the tail must become longer and, hence, contribute to skin friction and reduced volumetric efficiency.

Descriptors:

• *TAIL ASSEMBLIES
• *BOUNDARY LAYER FLOW
• *BODIES OF REVOLUTION
• *FAIRINGS
• COMPUTER PROGRAMS
• COMPUTER AIDED DESIGN
• NONLINEAR DIFFERENTIAL EQUATIONS
• TRANSFORMATIONS(MATHEMATICS)
• TWO DIMENSIONAL FLOW
• BOUNDARY LAYER TRANSITION
• FLOW SEPARATION
• SKIN FRICTION
• POTENTIAL FLOW
• AXISYMMETRIC FLOW
• AFTERBODIES
• HYDRODYNAMIC CONFIGURATIONS

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE