Multi-disciplinary optimization of a low-signature air vehicle - Final report


  • Nelsson Claes
  • Hermansson Patrik
  • Rahm Jonas
  • Strifors Hans
  • Sume Ain
  • Winzell Thomas

Publish date: 2005-01-01

Report number: FOI-R--1811--SE

Pages: 26

Written in: Swedish


When designing low-signature air vehicles several disciplines have to be integrated: The signature has to be as low as possible for different threat sensor systems and aerodynamic and manoeuvre characteristics have to fulfil the requirements. A common process is needed where different concepts can be evaluated and optimizations can be made with respect to several parameters. The project reported here has been conducted during 2004-2005 within the framework of FoT8 and has been coordinated with the project "Utformning lågsignaturfarkost" which is conducted in FoT25. Both projects were carried out completely at FOI and the objective was to design, analyze and improve a UCAV concept (Unmanned combat air vehicle called EIKON) which is inspired by the experimental air vehicle Pegasus. The project presented here focuses mainly on sensor related issues such as requirements for signatures, signature modelling of target in background, measurement of radar signature and signature analysis. Also, low observable materials and multidisciplinary optimization have been treated. The report concludes that appropriate tools for this kind of work basically are available at FOI. This report summarizes the results from the project. The technical results have been reported previously in two more detailed reports that cover the activities during 2004 and 2005.