Impact of mission requirements on the design of low observable UCAV configurations

Show simple item record Sepulveda Palacios, Eduardo Smith, Howard 2019-07-10T15:12:44Z 2019-07-10T15:12:44Z 2019-07-09
dc.identifier.citation Sepulveda E, Smith H. (2019) Impact of mission requirements on the design of low observable UCAV configurations. Aircraft Engineering and Aerospace Technology, Volume 91, Issue 10, October 2019, pp. 1295-1307 en_UK
dc.identifier.issn 0002-2667
dc.description.abstract Design/methodology/approach Conceptual design methodologies appropriate to low observable, tailless UCAVs have been integrated into a multidisciplinary aircraft design environment, GENUS, developed at Cranfield University’s aircraft design group. A basic Hi-Lo-Hi mission is designed and a baseline configuration is established through the GENUS framework. Subsequently, an evolutionary optimiser and a robust gradient-based optimiser are used to obtain convergent design solutions for various leading edge sweep angles, mission ranges, cruise Mach numbers and other operational constraints. Findings The results indicate that performance constraints, specifically in the form of specific excess power (SEP), have a large influence on the overall sizing of subsonic tailless UCAVs. This requirement drives the engine sizing, which represents a considerable proportion of the empty and gross mass of the vehicle. Cruise Mach number studies show that no significant advantages exist for operating at low speeds while maintaining performance requirements consistent with combat missions. There is a drastic increase in the vehicle’s mass and thrust requirements for flight speeds above Mach 0.8, with low sweep configurations showing a more pronounced effect. Increases in the range are not overly dependent on the leading edge sweep angle. Top-level radar cross section (RCS) results also favour configurations with higher leading edge sweep angles, especially from the nose-on aspect. Finally, research and development costs are shown to be directly linked to engine size. Originality/value This research shows the use of an integrated aircraft design environment that incorporates aerodynamics, performance, packaging and low observability aspects into the optimisation loop. Through this methodology, this study supports the efforts towards characterising and establishing alternate visions of the future of aerial warfare through the use of low cost, survivable unmanned platforms in network-centric cooperative tasks en_UK
dc.language.iso en en_UK
dc.publisher Emerald en_UK
dc.rights Attribution-NonCommercial 4.0 International *
dc.rights.uri *
dc.subject Conceptual design en_UK
dc.subject Drone en_UK
dc.subject Fighter en_UK
dc.subject MDAO en_UK
dc.subject Stealth en_UK
dc.subject UCAV en_UK
dc.subject Loyal wingman en_UK
dc.title Impact of mission requirements on the design of low observable UCAV configurations en_UK
dc.type Article en_UK

Files in this item

The following license files are associated with this item:

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial 4.0 International Except where otherwise noted, this item's license is described as Attribution-NonCommercial 4.0 International

Search CERES


My Account