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Investigation of fluidic thrust vectoring for scramjets

Abstract:
Fluidic thrust vectoring (FTV) offers a novel approach to aerodynamic control, circumventing some of the issues associated with mechanical systems. One method is shock vector control which involves injecting a fluid into the exhaust nozzle of an engine to redirect the gases and thus, produce a control force. An experimental model which incorporated FTV was designed and tested at Mach 6 in the Oxford high density tunnel (HDT). The model was a simplified two-dimensional scramjet geometry with two different configurations to compare an internal and external exhaust nozzle. The FTV injection system consisted of a slot at the rear edge of the exhaust nozzle fed from an internal plenum. In the experimental campaign, a range of gas injection pressures and free stream stagnation pressures were tested to assess the effectiveness of both configurations. Two new measurement methods were successfully implemented in the HDT: pressure sensitive paint and a 6-axis load cell. The FTV system has been shown to be effective with observable increases in lift and pitching moment. A linear relation between the injection pressure ratio and the control forces could be observed for both configurations.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1007/s00348-023-03607-w

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Oxford college:
Hertford College
Role:
Author
ORCID:
0000-0003-2662-3719


Publisher:
Springer
Journal:
Experiments in Fluids More from this journal
Volume:
64
Issue:
4
Article number:
75
Publication date:
2023-03-25
Acceptance date:
2023-02-12
DOI:
EISSN:
1432-1114
ISSN:
0723-4864


Language:
English
Keywords:
Pubs id:
1335517
Local pid:
pubs:1335517
Deposit date:
2023-04-04

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