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Balancing the radar and long wavelength infrared signature properties in concept analysis of combat aircraft - A proof of concept
Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics. Linköping University, Faculty of Science & Engineering. Saab AB, SE-58188 Linkoping, Sweden.
Swedish Def University, Sweden; National Def University, Finland.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering. Swedish Def Research Agency, Sweden.
2017 (English)In: Aerospace Science and Technology, ISSN 1270-9638, E-ISSN 1626-3219, Vol. 71, p. 733-741Article in journal (Refereed) Published
Abstract [en]

Designing combat aircraft with high military effectiveness, affordability and military suitability requires balancing the efforts of many engineering disciplines during all phases of the development. One particular challenge is aircraft survivability, the aircrafts ability to avoid or withstand hostile actions. Signature management is one way of increasing the survivability by improving the ability to avoid detection. Here, the long-wave infrared and radar signatures are studied simultaneously in a mission context. By establishing a system of systems approach at mission system level, the risk of sub optimization at a technical level is greatly reduced. A relevant scenario is presented where the aim is to incapacitate an air-defense system using three different tactics: A low-altitude cruise missile option, a low and medium altitude combat aircraft option. The technical sub-models, i.e. the properties of the signatures, the weapons and the sensors are modeled to a level suitable for early concept development. The results from the scenario simulations are useful for a relative comparison of properties. Depending on the situation, first detection is made by either radar or infrared sensors. Although the modeling is basic, the complexity of the infrared signature and detection chain is demonstrated and possible pivot points for the balancing of radar and IR signature requirements are identified. The evaluation methodology can be used for qualitative evaluation of aircraft concepts at different design phases, provided that the technical models are adapted to a suitable level of detail. (C) 2017 Elsevier Masson SAS. All rights reserved.

Place, publisher, year, edition, pages
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER , 2017. Vol. 71, p. 733-741
Keyword [en]
Radar; Infrared; Signatures; Scenario; Evaluation
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:liu:diva-144148DOI: 10.1016/j.ast.2017.10.022ISI: 000418313700067OAI: oai:DiVA.org:liu-144148DiVA: diva2:1172315
Note

Funding Agencies|Saab Aeronautics; Swedish Defence University; Swedish Armed Forces

Available from: 2018-01-09 Created: 2018-01-09 Last updated: 2018-01-09

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