Aflat panel used on a spacecraft is fabricated from a single layer of sic/sic composite, 0.020 m thick. the spacecraft has inner air temperature ti=310 k and it is in orbit with the panel exposed only to deep space, where to = 0 k. this material has kc=5.0 w/m2.k and ε=0.8. the inner surface of the panel is exposed to airflow resulting in hi = 70 w/m2.k. determine the outer surface temperature t2. determine q/a

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines