A turbojet aircraft cruises at a speed of 200 m/s, burning fuel at a rate of 1000 kg/hr. The turbojet combustor runs at an air/ fuel ratio of 60:1. Exhaust gasses leave the
turbine at a specific enthalpy of 400 kJ/kg and the nozzle at a specific enthalpy of 350 kJ/kg.
Assuming an ideal nozzle, determine the engine thrust. State your answer in Newtons to
three significant figures without stating the units

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Ifa component is made of two or more materials with different modulus of elasticity (e), it is called a composite member and we calculate the factor·n". mention the formula for calculating n". also, ifn> 1, explain what will happen to the 1. transformed.gi) ifn 1, what will happen to the material when transformed material when