Gas-dynamic problems in off-design operation of supersonic inlets (review)

Звегинцев, В. И.

doi:10.1134/s0869864317060014

Cited by 11 publications

(1 citation statement)

References 32 publications

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“…By using the design criteria introduced above, the inlet design at the design point can usually ensure the most effective performance. However, at off-design points, Zvegintsev 19 revealed that the gas-aerodynamic problems such as inlet start and compression capability can arise. To overcome these problems and further improve the inlet compression capability, many research studies focused on the inlet optimization through improving either the design methodology or the configuration.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis on the conceptual design of an air-breathing engine inlet working in mach number 3∼5.5

Huo

Zhenhua

Zhengze

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part G:

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Based on the equal-intensity shock theory, this article designed a supersonic inlet working in Mach number 3.0∼5.5 with the background of an air-breathing engine. The inlet applied the four-shock train mixed compression configuration and inserted a sidewall compression at the beginning of the isolator. Through developing effective 3D RANS computations validated by current experiments, the performance of the designed inlet was identified. The designed inlet self-starts at freestream Mach number Ma∞ = 3.0 under which the total pressure recovery coefficient has dramatic increment, and the aerodynamic choking at the inlet throat no longer presents; the inlet keeps working at all studied flight states with zero angle of attack (AoA) and achieves shock-on-lip at the design point Ma∞ = 5.0. Both positive and negative AoAs can disrupt the equal-intensity shock allocations, which degrade the inlet performance. The inlet obtains maximum total pressure recovery coefficient at zero AoA. The maximum back pressure at Ma∞ = 3.0∼5.5 obtained by the inlet surpasses the requirements and keeps a certain margin. The inlet performance basically meets all the goals proposed by the engine.

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Section: Introductionmentioning

confidence: 99%