Euler/Navier-Stokes flow computations on flexible configurations for stability analysis

Author:: Tu, E.
Published:: Apr. 12, 1995.
Physical Description:: 1 electronic document
Additional Creators:: Guruswamy, G.

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Summary:

Longitudinal dynamic stability derivatives required for design of aircraft are computed by using the state-of-the-art numerical methods for wing-body configurations. The flow is modeled using the Euler/Navier-Stokes equations with turbulence models and solved using an efficient finite-difference scheme suitable for patched structured grids. Computations are made at a flow regime that is beyond the limits of the current linear methods mostly used for computing stability derivatives. Flow conditions include shockwaves and viscous dominated vortical flows. Effect of Mach number and angle-of-attack on stability derivatives are demonstrated for a typical wing-body configuration. For the same configuration the effects of wing flexibility on the magnitude and phase angles of stability derivatives are also demonstrated.

Other Subject(s):

Fluid Mechanics and Heat Transfer

Collection:

NASA Technical Reports Server (NTRS) Collection.

Note:

Document ID: 19960016112.
Accession ID: 96N22150.
NASA-TM-111253.
AIAA Paper 95-1292.
NAS 1.15:111253.
36th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference; 10-12 Apr. 1995; New Orleans, LA; United States.

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