ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Waverider forebody design method with longitudinal segments and multi-stage compression
Received date: 2023-03-27
Revised date: 2023-04-17
Accepted date: 2023-05-19
Online published: 2023-06-05
Supported by
Provincial or Ministerial Level Project
The air-breathing high speed vehicle is powered by a scramjet and uses the waverider as a forebody to provide compressed airflow for the intake. The compressibility of the forebody plays a decisive role in the performance of the aircraft and scramjet. The compression performance of the waverider is closely related to the Mach number and shock angle. The single-stage compression usually requires a larger shock angle to meet the requirements of the intake airflow pressure-boost ratio， and meanwhile， the forebody aerodynamic performance is reduced with the larger pitching moment and lower lift-to-drag ratio. To further improve the compression ability of the waverider forebody， a longitudinally segmented multi-stage compression waverider forebody design method is proposed， which can flexibly adjust the compression amount and length ratio according to the inlet need of intake. The produced high pressure area is mainly concentrated in the middle position of the lower waverider surface， which can match a wide range of intake and avoid more edge pressure leakage. Based on the method， the design code is developed， and the two-stage and three-stage cone-derived and osculating-cone waveriders are designed and analyzed， respectively. The numerical results show that the designed waverider has significantly improved compressibility and can simultaneously satisfy the high static pressure， high total pressure recovery and high lift-to-drag ratio with good engineering application prospects.
Lili CHEN , Jianxia LIU , Juntao ZHANG , Zheng GUO , Anping WU , Zhongxi HOU . Waverider forebody design method with longitudinal segments and multi-stage compression[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2024 , 45(4) : 128744 -128744 . DOI: 10.7527/S1000-6893.2023.28744
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