The following research paper presents an up-to-date status of the testing of a Dual-Mode Scramjet (DMSJ) model which is experimentally operated at UVa’s Aerospace Research Laboratory. The optical technique Stereoscopic Particle Image Velocimetry (SPIV) is applied to the combustor of the DMSJ with a ramp fuel injector configuration. SPIV is utilized to measure the three-dimensional, combusting, ...

Hypersonic airbreathing propulsion for access to space has several advantages over conventional rockets. However, to achieve the theoretical propulsion efficiencies, many technological challenges, such as fast and efficient mixing of the fuel with air, still need to be resolved. Several scramjet inlet geometries naturally generate vortices that could be used for mixing enhancement. Thorough cha...

The aerospace vehicle flying at hypersonic speed, using an airbreathing propulsion system based on supersonic combustion (scramjet) technology, requires a highly integrated without moving parts, making the and shape indistinguishable. A scramjet uses shock waves, generated by its inlet during flight to provide temperature velocity of atmospheric air burn hydrogen, combustor speed. divergent exh...

A new variant of MEMS surface fence is proposed for shear-stress estimation under high-speed, high-temperature flow conditions. Investigation of high-temperature resistance including heat-resistant mechanism and process, in conjunction with high-temperature packaging design, enable the sensor to be used in environment up to 400 °C. The packaged sensor is calibrated over a range of ~65 Pa and th...

Abstract A multi-component aerodynamic test for an airframe-engine integrated scramjet vehicle model was conducted in the free-piston shock tunnel HIEST. free-flight force measurement technique applied to named MoDKI. new method using multiple piezoelectric accelerometers developed based on overdetermined system analysis. Its unique features are following: (1) The accelerometer’s mounting locat...

Dual-mode ramjet/scramjet engines promise extended flight speed range and are the commonly preferred air-breathing propulsion system from within family of hypersonic aircraft concepts. One main challenges that should be hurdled in their design is modeling fuel–air mixing process to provide optimal fuel distribution yield best engine performance. Injecting into high-speed air stream along multip...