Hassan is conducting research as a DPhil candidate within the Oxford Hypersonics Group at the Oxford Thermofluids Institute under Professor Matthew McGilvray. Their project experimentally investigates a particular cooling method — known as transpiration cooling — for a hypersonic vehicle, a vehicle that flies at greater speeds than five times the speed of sound. Hassan graduated with a bachelor’s degree in 2014 and a master’s degree in 2016, both in Aerospace Engineering, from the University of Stuttgart, Germany. During his time in Oxford, Hassan has participated in numerous outreach programmes to promote science, especially to underprivileged children. He has personally undertaken several projects to encourage underprivileged children, especially girls, to join the field of STEM. His pilot project, From Slums to Rocket Science, was particularly well received where he held workshops on Aerospace Engineering in the slums of Bangladesh for children who had never experienced anything of that sort before.
Hassan's research interests broadly lie in the domain of aerospace engineering; particularly in hypersonic aerodynamics, re-entry flows, aerothermodynamics, flow diagnostics, and reusable rocket technology.
Hassan's DPhil project investigates a particular cooling method — known as transpiration cooling — for a hypersonic vehicle, a vehicle that flies at greater speeds than five times the speed of sound. This uses a cooling gas, injected through a porous material, which extracts heat from the material and dribbles out onto the surface, creating a cool blanket around the vehicle and thereby protecting it from the shock heated gas. This project intends to develop experimental techniques and utilise ceramic materials; the experiments are carried out in the Oxford High Density Hypersonic Tunnel. In particular, Hassan’s work has, for the very first time, utilised and characterised porous Ultra-High-Temperature-Ceramics (UHTC) for the purpose of transpiration cooling, increasing the potential temperature threshold of the porous wall up to 3500 K. This work was presented at the AIAA SPACE in 2018. In addition, he is investigating the aerodynamic interaction between the coolant gas and the hypersonic cross-flow within the boundary-layer downstream of the injector. Broadly speakng, transpiration cooling is a promising technology that could act as a regenerative thermal protection system for rocket and spaceplanes. This could one day make rockets — at least for some missions — partially or fully reusable, makeing space and high-speed flight more accessible.
- Cerminara. A., Hermann, T., Ifti, H.S., Deiterding, R., Sandham, N., and McGilvray, M., “Influence of instability modes on cooling performance in hypersonic boundary layer with slot injection,” Aerospace Science And Technology (2020, accepted).
- H.S. Ifti, T. Hermann and M. McGilvray, “Transpiration Cooling at Mach 5 Employing Porous UHTC”, International Conference on Flight vehicles, Aerothermodynamics and Re-entry Missions and Engineering, Monopoli, Italy, 2019.
- Ewenz Rocher, M, T. Hermann, M. McGilvray, Ifti, H.S, and Quinn, M.K, “Studying the Film Effectiveness of Transpiration Cooled Walls Using Pressure Sensitive Paint”, International Conference on Flight vehicles, Aerothermodynamics and Re-entry Missions and Engineering, Monopoli, Italy, 2019.
- Hermann, T., McGilvray, M., Ifti, H., Hufgard, F., & Löhle, S. (2020). Thermal Impulse Response in Porous Media for Transpiration-Cooling Systems. Journal Of Thermophysics And Heat Transfer, 34(2), 447-456. https://doi.org/10.2514/1.t5841
- Bucknell, A., McGilvray, M., Gillespie, D., Parker, L., Forsyth, P., Ifti, H. S., … Reed, A. (2019). Experimental Study and Analysis of Ice Crystal Accretion on a Gas Turbine Compressor Stator Vane. In SAE Technical Paper Series. SAE International. https://doi.org/10.4271/2019-01-1927
- Ewenz Rocher, M., McGilvray, M., Hermann, T. A., Ifti, H. S., Hufgard, F., Eberhart, M. F., … Vandeperre, L. J. (2019). Testing a Transpiration Cooled Zirconium-Di-Boride sample in the Plasma Tunnel at IRS. In AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics. https://doi.org/10.2514/6.2019-1552
- Hermann, T. A., McGilvray, M., Ifti, H. S., Hufgard, F., & Loehle, S. (2019). Fluid-Solid Heat Exchange in Porous Media for Transpiration Cooling Systems. In AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics. https://doi.org/10.2514/6.2019-0537
- Hermann, T. A., Ifti, H. S., McGilvray, M., Doherty, L. & Geraets, R. P. (2019). Fluid-Solid Heat Exchange in Porous Media for Transpiration Cooling Systems. In HiSST: International Conference on High-Speed Vehicle Science Technology.
- Ifti, H. S., Hermann, T., & McGilvray, M. (2018). Flow Characterisation of Transpiring Porous Media for Hypersonic Vehicles. In 22nd AIAA International Space Planes and Hypersonics Systems and Technologies Conference. American Institute of Aeronautics and Astronautics. https://doi.org/10.2514/6.2018-5167