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�������պ����ѧѧ�� 2005, Vol. 31 Issue (11) :1222-1225    DOI:
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袴���, ����, ����*
�������պ����ѧ �ѧԺ, ���� 100083
Performance loss analysis on aerospike nozzles
Ju Chunguang, Liu Yu, Han Fei*
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The performance of the aerospike nozzles is influenced by many factors. To identify how much influence each factor work on the performance loss, the major factors were analyzed, including the boundary layer losses, the chemical kinetic losses, the truncated losses and the base losses, as well as the losses inherent to the design. The model of the pressure distribution on plug wall was established according to the altitude compensation capability of the plug nozzle. The results show that the truncated losses and the base losses due to the truncation of the plug are the main factors influencing the performance of the aerospike nozzle. To reduce the losses and improve the performance , the gas flow features on the spike and base should be emphatically investigated by the experiments and the numerical simulations, and these features should be taken into account in the process of the aerospike nozzle design.
Keywords�� efficiency   performance   losses   pressure model   aerospike nozzles   rocket engines     
Received 2004-08-16;


About author: 袴���(1980-),��,����������,��ʿ��, juchunguang@sina.com.
袴���, ����, ����.��ʽ���������ʧ����[J]  �������պ����ѧѧ��, 2005,V31(11): 1222-1225
Ju Chunguang, Liu Yu, Han Fei.Performance loss analysis on aerospike nozzles[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(11): 1222-1225
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2005/V31/I11/1222
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