Overspeeding characteristics of turbomachinery for gas generator cycle air turbo ramjet engine

IF 5.4 2区工程技术 Q1 ENGINEERING, AEROSPACE Propulsion and Power Research Pub Date : 2022-12-01 DOI:10.1016/j.jppr.2022.10.001

Ryojiro Minato , Daisuke Nakata , Masaharu Uchiumi , Ryoji Imai , Kazuyuki Higashino

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Abstract

The main interest in the current study focuses on the possibility of overspeeding for the gas-generator cycle air turbo ramjet (GG-ATR) engine. The authors developed the air turbo ramjet engine and investigated its compressor performance. Based on those data, the authors developed the analytical code for the air turbo ramjet engine, which calculates the performances of turbomachinery, gas-generator, and ram combustor. The previous study described that the rotor overspeeding would not occur in the air turbo rocket engine. However, the current results show that degraded ram combustion can decrease the compressor pressure ratio and the compressor power. This reduced compressor power can cause overspeeding for the air turbo ramjet engine. The experimental results of compressor power and turbine inlet pressure support those analytical results.

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燃气发生器循环空气涡轮冲压发动机涡轮机械的超速特性

当前研究的主要兴趣集中在燃气发生器循环空气涡轮增压喷气发动机(GG-ATR)超速的可能性上。研制了空气涡轮冲压发动机，并对其压气机性能进行了研究。基于这些数据，作者开发了空气涡轮冲压发动机的分析程序，计算了涡轮机械、燃气发生器和冲压燃烧室的性能。以往的研究表明，空气涡轮火箭发动机不会出现转子超速现象。然而，目前的研究结果表明，退化的冲压燃烧会降低压气机压力比和压气机功率。这种减少的压缩机功率可能导致空气涡轮增压喷气发动机超速。压气机功率和涡轮进口压力的实验结果与分析结果一致。

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来源期刊

Propulsion and Power Research Multiple-

CiteScore

7.50

自引率

5.70%

发文量

期刊介绍： Propulsion and Power Research is a peer reviewed scientific journal in English established in 2012. The Journals publishes high quality original research articles and general reviews in fundamental research aspects of aeronautics/astronautics propulsion and power engineering, including, but not limited to, system, fluid mechanics, heat transfer, combustion, vibration and acoustics, solid mechanics and dynamics, control and so on. The journal serves as a platform for academic exchange by experts, scholars and researchers in these fields.