Radar Cross Section Based Shape Optimization of Chine Forebody

Tariq H., MAQSOOD A.

19th International Bhurban Conference on Applied Sciences and Technology, IBCAST 2022, Islamabad, Pakistan, 16 - 20 August 2022, pp.999-1004, (Full Text) identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/ibcast54850.2022.9990177
  • City: Islamabad
  • Country: Pakistan
  • Page Numbers: pp.999-1004
  • Keywords: chine, design of experiment, radar-cross-section, response surface method, shape optimization, stealth
  • Middle East Technical University Northern Cyprus Campus Affiliated: Yes

Abstract

Chine forebodies are frequently used in high-performance aircraft designs to improve stealth characteristics. However, a good design process requires construction and exploration of design space before finding optimal configuration. In this research, a chine forebody is parameterized through Bezier curves. The control points are varied through the design of experiment (DOE) approach to construct a design space. The radar-cross-section (RCS) of each configuration in design space is evaluated through the potent Computational Electromagnet-ics (CEM) tool. Subsequently, a response surface methodology (RSM) is adopted to find the optimal position of control points. The results indicate a significant reduction in RCS from the baseline case. Around 79.42% reduction in RCS was observed after optimization. The approach/pipeline defined in this paper can be extended to other surfaces with manageable computational cost and complexity.