Tiejin Wang

DOI Number XXX-YYY-ZZZ

Conference Number HiSST 2018_22901047

The conventional hypersonic wind tunnel plays an important role in the design of hypersonic vehicles, where the pressure pure air is used as working medium, and heated through convection heaters. With the development of hypersonic vehicles, especially the vehicle with SCRAM jet as propulsion system, the large-scale conventional hypersonic wind tunnel with nozzle exit diameter of 2m order of magnitude is required, and its test capability will be extended from the conventional aerodynamic force and aero-heating tests to the thermal protection and Scramjet tests with high total temperature, for example, in the Scramjet tests to simulate the flow conditions of Mach number of 6, the total temperature may be about 2000K. The critical issue encountered in the design of this kind of largescale conventional hypersonic wind tunnel is that the energy consumption, as well as the pollution of noise and waste heat of the exhausting working air, also increases dramatically in the tunnel operation with high temperature. How to save energy and decrease environmental pollution while the simulation conditions for the development of hypersonic vehicles are satisfied has become an important problem to be considered in the design of the conventional hypersonic wind tunnel. To solve the problem, the aerodynamic layout of the conventional hypersonic wind tunnel is optimized in this paper as follows: first, the aerodynamic layouts of the existing conventional hypersonic wind tunnels are summarized; second, the energy transformation in the conventional hypersonic wind tunnel during its operation is theoretically analyzed, and on the view of point of saving energy and protecting environment are also analyzed the methods used to deal with the exhausting working air in different aerodynamic layouts; third, the possible methods for utilizing the remainder energy of exhausting working air are discussed; finally, an optimized aerodynamic layout for the large-scale conventional hypersonic wind tunnel is put forward, and critical technologies to be used in the realization of the layout are discussed. The result of a simple calculation of saved energy in the optimized aerodynamic layout at typical run condition shows its advantages in saving energy and protecting environment.

Read the full paper >

In Categories: HiSST 2018, Hypersonic Aerodynamics, Hypersonic Flight Dynamics, Testing and Evaluation
Email
Print
LinkedIn
The paper above was part of  proceedings of a CEAS event and as such the author has signed a publication agreement to have their paper published in the repository. In the case this paper is found somewhere else CEAS always links to the other source.  CEAS takes great care in making the correct content available to the reader. If any mistakes are found  in the listings please contact us directly at papers@aerospacerepository.org and we will correct the listing promptly.  CEAS cannot be held liable either for mistakes in editorial or technical aspects, nor for omissions, nor for the correctness of the content. In particular, CEAS does not guarantee completeness or correctness of information contained in external websites which can be accessed via links from CEAS’s websites. Despite accurate research on the content of such linked external websites, CEAS cannot be held liable for their content. Only the content providers of such external sites are liable for their content. Should you notice any mistake in technical or editorial aspects of the CEAS site, please do not hesitate to inform us.