There are a number of systems in which supercritical cryogenic fluids are used as coolants or propellant fluids. In some modern military aircraft, the fuel is pressurized above its critical point and used as a coolant to remove heat from the aircraft engine. Accurate prediction of heat transfer coefficients to turbulent flows of supercritical fluids is essential in design of such systems. One o...

The friction force for aircraft landing is mainly provided by the texture of runway surfaces. mechanism underlying generation energy dissipation tire rubber materials during random excitation induced asperities. However, surface deteriorated cyclic loading and environmental effects service life a runway, leading to loss braking extension distance. Additionally, when an lands on wet at high velo...

Concrete pavements located in cold climates have been experiencing premature joint deterioration. Entrapment of moisture in the joints saturates the surrounding concrete, rendering it susceptible to freeze–thaw damage. To identify and to isolate the variables that might be causing this localized deterioration, concrete cores were obtained from deteriorated and non-deteriorated sections of US 35...