No abstract

No abstract

No abstract

This paper reports on a study examining operation of a shockheated secondary driver across the entire operating envelope of a free-piston driven expansion tube. It is found that the secondary driver operating characteristics depend significantly on the specific characteristics of the flow condition. Key trends and characteristics are identified, and theoretical concepts are validated by numerical analysis and experiment.

No abstract

No abstract

The University of Oxford has embarked on developing the UKs fastest wind tunnel, T6, in collaboration with the University of Queensland (Australia) using technology pioneered by the late Professor Ray Stalker. The T6 facility couples the ex-Australian National University T3 free piston driver to the barrels, nozzles and test section of the Oxford gun tunnel. The facility can operate in three different modes; as a shock tube, a reflected shock tunnel or as an expansion tunnel. The T6 facility will be unique to Europe allowing for hypervelocity ground testing not possible in any current EU facilities, whilst having the flexibility to conduct tests across a large range of speeds and binary scaling products (ρL) of interest.

No abstract