French Flight Testing Program LEA Status in 2009

Falempin, François; Serre, Laurent

doi:10.2514/6.2009-7227

Cited by 10 publications

(5 citation statements)

References 18 publications

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“…4 The engine is set upside-down on the test bed. 3 American Institute of Aeronautics and Astronautics Figure 2 gives the strut shape of 5/5-Height Strut configuration and another strut shape to be compared with. The other one is a full-height strut which has a boat-tail shape and is shorter than the strut of 5/5-Height Strut.…”

Section: ⅱ．A Tested Engine and A Proposal Enginementioning

confidence: 99%

Fluid Transport brought by a Strut-Cowl System in a Scramjet Engine

Sato

Fukui²,

Watanabe

et al. 2013

49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

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Japan Aerospace Exploration Agency (JAXA) has been investigating scramjet engines inKakuda Space Center using Ram Jet Engine Test Facility (RJTF) et al. The engine tested at the flight condition of Mach 6 in RJTF showed very important characteristics depending on internal geometry. The authors found in the result of CFD research that a "hot triangle" is caused by 3-dimensional interaction of the cowl shock wave and the strut shock wave and that the hot triangle contributes to intensive combustion transition. Based on this hot triangle, an engine configuration with boat-tail strut is compared to that with 5/5-height strut which showed good thrust performance in the engine test. CFD is carried out to solve the inner air flow, and the two configurations are compared in the view point of the superiority of scramjet engine. It is found that fluid is transported from the top wall side to the cowl side automatically in the base flow behind the strut. Especially in the configuration with boat-tail strut produces a large circulation there. It suggests that the base flow behind the boat-tail strut can promote the uniformity of fuel distribution.

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Section: ⅱ．A Tested Engine and A Proposal Enginementioning

confidence: 99%

Fluid Transport brought by a Strut-Cowl System in a Scramjet Engine

Sato

Fukui²,

Watanabe

et al. 2013

49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

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“…Such a concept is being developed thanks to LEA flight testing program [6] and was also proposed for fully axisymmetric space launcher application [7]. Considering the targeted range as well as the low density fuel, and even if the cabin will take some space, the vehicle airframe will be mainly an hydrogen tank.…”

Section: -Vehicle and Propulsion System Concepts Propulsion Systementioning

confidence: 99%

LAPCAT 2 - Axisymmetric Concept for a Mach 8 Cruiser Preliminary Design and Performance Assessment

Falempin

Bouchez

Perrillat

2009

16th AIAA/DLR/DGLR International Space Planes and Hypersonic Systems and Technologies Conference

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The LAPCAT 2 program, led under ESA/ESTEC technical coordination in the European Union Framework Program FP7, aims at preliminary designing a high-speed civilian transport airplane able to perform very long range and at acquiring some associated necessary knowledge. Two options are considered : one airplane cruising at Mach 5 and another cruising at Mach 8.For the Mach 8 cruiser, and in a first step, different concepts are studied by different program partners : two using TBCC propulsion system, two others using RBCC propulsion systems.In that frame, MBDA is performing a preliminary design of a fully axisymmetric vehicle using existing turbojets for subsonic flight then a liquid rocket system for acceleration up to Mach 1.5/2 and finally a dual-mode ramjet to reach Mach 8 and cruise over 18 000km.

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“…64 In addition to MBDA and ONERA, other partners include DGA and the national research agency CNRS, Roxel, Astrium, and Auxitrol. 65 French labs are also working on problems related to hypersonic technology: The National Center for Space Studies (CNES) is actively studying regenerative cooling in an attempt to mitigate the effects of extreme heating associated with hypersonic flight. 66 The …”

Section: Hypersonic Randd Programsmentioning

confidence: 99%