Optimization procedure for improved sonic boom and aerodynamic performance using a multiobjective formulation technique

J. R. Narayan, Aditi Chattopadhyay, N. Pagaldipti, S. H. Cheung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Multidisciplinary design of high speed aircraft for improved sonic boom and aerodynamic performance using a multiobjective optimization procedure is addressed. The optimization procedure minimizes the primary sonic boom (characterized by the first peak in the pressure signature) at a given distance from the aircraft while minimizing the dragto-lift ratio (CD/CL) simultaneously. The secondary sonic boom (characterized by the second peak in the pressure signature) is constrained to be less than its reference value. Upper and lower bounds are also imposed on the lift coefficient. The Kreisselmeier-Steinhauser function is used for the optimization formulation. The flow equations arc solved using a three-dimensional parabolized Navier-Stokes solver. Sonic boom analysis is performed using an extrapolation procedure. A nonlinear programming technique and an approximate analysis procedure are used for optimization. The optimization procedure developed is applied to a delta wing-body configuration. Results are presented for two different cases of Optimization with different sets of design variables. Results obtained show significant improvements in the sonic boom characteristics and the aerodynamic performance in all cases. The use of the approximate analysis technique facilitates significant computational savings.

Original languageEnglish (US)
Title of host publication33rd Aerospace Sciences Meeting and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9780000000002
StatePublished - 1995
Event33rd Aerospace Sciences Meeting and Exhibit, 1995 - Reno, United States
Duration: Jan 9 1995Jan 12 1995

Other

Other33rd Aerospace Sciences Meeting and Exhibit, 1995
CountryUnited States
CityReno
Period1/9/951/12/95

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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    Narayan, J. R., Chattopadhyay, A., Pagaldipti, N., & Cheung, S. H. (1995). Optimization procedure for improved sonic boom and aerodynamic performance using a multiobjective formulation technique. In 33rd Aerospace Sciences Meeting and Exhibit [AIAA 95-0127] American Institute of Aeronautics and Astronautics Inc, AIAA.