Axisymmetric approach and landing thrust reverser concepts Hot flow test results

Obye, R.; Hakim, Arif Nur

doi:10.2514/6.1984-1176

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“…Figure 1 shows the advantage of engine thrust reverser shortening the sliding distance while landing on the icy ground. concept (downstream design) [1][2] [3] and clamshell thrust reverser concept. Presently, as the most simple and effective slowdown system, the clamshell thrust reverser is widely adopted on many large aircrafts.…”

Section: Introductionmentioning

confidence: 99%

3D numerical simulation of clamshell thrust reverser with flap deployed while landing

Liu

Wang

Jiaqi

et al. 2010

2010 3rd International Symposium on Systems and Control in Aeronautics and Astronautics

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The flow field distribution characteristic of a clamshell thrust reverser with flap deployed while landing is investigated based on Computational Fluid Dynamics (CFD) technology. The mesh was generated with unstructured tetrahedron and unstructured hexahedron meshes and S-A turbulent model in solving Reynolds averaged N-S equations is adopted. The results show, in the range of landing speed between 136.1m/s and 17.0m/s, the hot reverse exhaust flow from the clamshell thrust reverser is not re-injected into the engine inlet; and it impinges on part of the aerofoil and pylon. As landing speed decreases, the hot reverse exhaust flow spreads forward and laterally deeper, so it may be re-injected by near engine inlet if the aerofoil sweepback is large enough, which will result in inlet distortion. When landing speed decreases down to 34m/s, the hot reverse exhaust flow starts to impinge on the ground, which may wind up some dross to the inlet. At last, the reverse thrust decreases as landing speed decreases. Key words: clamshell thrust reverser, flap, hot reverse exhaust flow, inlet distortion, reverse thrust 978-1-4244-6044-1/10/$26.00 ©2010 IEEE

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Section: Introductionmentioning

confidence: 99%