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Conical Euler Simulation And Active Suppression Of Delta Wing Rocking Motion

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Conical Euler Simulation And Active Suppression Of Delta Wing Rocking Motion

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Author :
language : en
Publisher:
Release Date : 1990

Conical Euler Simulation And Active Suppression Of Delta Wing Rocking Motion written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.

Conical Euler Analysis And Active Roll Suppression For Unsteady Vortical Flows About Rolling Delta Wings

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Author : Elizabeth M. Lee-Rausch
language : en
Publisher:
Release Date : 1993

Conical Euler Analysis And Active Roll Suppression For Unsteady Vortical Flows About Rolling Delta Wings written by Elizabeth M. Lee-Rausch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Airplanes categories.

Conical Euler Simulation And Active Suppression Of Delta Wing Rocking Motion

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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07

Conical Euler Simulation And Active Suppression Of Delta Wing Rocking Motion written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07 with categories.

A conical Euler code was developed to study unsteady vortex-dominated flows about rolling highly-swept delta wings, undergoing either forced or free-to-roll motions including active roll suppression. The flow solver of the code involves a multistage Runge-Kutta time-stepping scheme which uses a finite volume spatial discretization of the Euler equations on an unstructured grid of triangles. The code allows for the additional analysis of the free-to-roll case, by including the rigid-body equation of motion for its simultaneous time integration with the governing flow equations. Results are presented for a 75 deg swept sharp leading edge delta wing at a freestream Mach number of 1.2 and at alpha equal to 10 and 30 deg angle of attack. A forced harmonic analysis indicates that the rolling moment coefficient provides: (1) a positive damping at the lower angle of attack equal to 10 deg, which is verified in a free-to-roll calculation; (2) a negative damping at the higher angle of attack equal to 30 deg at the small roll amplitudes. A free-to-roll calculation for the latter case produces an initially divergent response, but as the amplitude of motion grows with time, the response transitions to a wing-rock type of limit cycle oscillation. The wing rocking motion may be actively suppressed, however, through the use of a rate-feedback control law and antisymmetrically deflected leading edge flaps. The descriptions of the conical Euler flow solver and the free-to-roll analysis are presented. Results are also presented which give insight into the flow physics associated with unsteady vortical flows about forced and free-to-roll delta wings, including the active roll suppression of this wing-rock phenomenon. Lee, Elizabeth M. and Batina, John T. Langley Research Center RTOP 505-63-21-01...

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1991

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.

Aeronautical Engineering

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Author :
language : en
Publisher:
Release Date : 1991

Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.

Nasa Sp

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Author :
language : en
Publisher:
Release Date : 1992

Nasa Sp written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Aeronautics categories.

Monthly Catalog Of United States Government Publications

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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1992

Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Government publications categories.