Volume 22 Issue 2
Feb.  2007
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Article Contents
WANG Yi-bai, QIN Li-zi, LIU Yu, LIAO Yun-fei, WANG Chang-hui. Hydrogen/oxygen hot-firing tests of altitude compensating nozzles[J]. Journal of Aerospace Power, 2007, 22(2): 316-322.
Citation: WANG Yi-bai, QIN Li-zi, LIU Yu, LIAO Yun-fei, WANG Chang-hui. Hydrogen/oxygen hot-firing tests of altitude compensating nozzles[J]. Journal of Aerospace Power, 2007, 22(2): 316-322.

Hydrogen/oxygen hot-firing tests of altitude compensating nozzles

  • Received Date: 2006-06-21
  • Rev Recd Date: 2006-10-17
  • Publish Date: 2007-02-28
  • By employing the gaseous oxygen as oxidizer and gaseous hydrogen as fuel,hot-firing tests were performed for aerospike nozzle and dual-bell nozzle test engines with altitude compensating features.The gaseous hydrogen/oxygen experimental system,the test nozzles' configuration,design parameters and assembly graphics were described.Made of the ablation-resistant tungsten-copper alloy,the test components of nozzles have successfully passed several short-period hot-firing tests.The measured parameter curves,test photographs and results are obtained,thus obtaining the performance data of aerospike nozzle and dual-bell nozzle under different altitudes,both of which have good altitude compensation characteristic as compared with the conventional bell nozzle.For example,the thrust coefficient efficiency of aerospike nozzle is 92%-95% and dual-bell nozzle is 96%-98% at low altitude,and about 95% at high altitude.

     

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