The experimental flights are designed to further scramjet technology. Scramjets are supersonic combustion ramjets, which use oxygen from the atmosphere rather than carrying oxygen supplies like rockets, and are designed to fly at hypersonic speeds which is greater than five times the speed of sound.
They are set to revolutionise the launch of small space payloads, such as mini or micro low-earth-orbit (LEO) satellites, by substantially lowering costs. LEO satellites are used in a variety of applications including earth observation, however the cost of launching them is tremendous and the advancement in scramjet technology could lower the costs significantly.
Scramjets could conceivably be used as part of a multi-stage launch vehicle that would involve a number of propulsion mechanisms to enable the vehicle to exit the earth's atmosphere. This type of launch vehicle would substantially lower costs through reducing the quantity of fuel carried because the amount of oxygen needed to be carried, compared to a conventional rocket, would be significantly lower.
The HyshotTM III experiment is designed to determine whether the efficient air inlet will enable the combustion chambers to auto-ignite. Managed under the umbrella of the HyshotTM international programme led by the University of Queensland (UQ), the QinetiQ project aims to provide low cost in-flight experiments, enabling the validation of ground test facilities and thus furthering scramjet technology.
The UK MoD funded QinetiQ scramjet engine has been put through an extensive ground test programme in Brisbane at UQ as well as Farnborough, QinetiQ's headquarters.