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The launch vehicle takes the moon orbiter to a circular orbit around the Earth at 300km altitude. The orbiter is to perform a Hohmann transfer to a Lunar orbit, entering into a circular lunar orbit at 50km altitude. The objective of the mission is to put a 200kg orbiter around the Moon. The orbiter has an onboard bi-propellant chemical propulsion system of Isp 350s and thrust of 200N, and an exterior solid rocket booster of Isp 250s and thrust of 500N.
Determine the minimum initial mass of the orbiter, including all propulsion systems and fuel, as it starts off on the mission from the parking orbit. Determine the ideal launch vehicle that can put this orbiter into the parking orbit. (hint: you do not have to consider the Sun in this problem. Only SOI of the Earth and the Moon)
An unsuited free diver can work in a pressure of up to 490KN/m^2 and a suited diver in pressure of up to 1815 KN/m^2. Calculate the maximum depths at which they might work in sea-water which has a specific gravity of 1.03.
air at 0.1 kgs is to be cooled from 140 c to 40 c in a heat exchanger. the coolant water is at 20c constant throughout
A turbine salesman makes the following claim for one of his products: Steam enters a steady-flow adiabatic turbine at 4 MPa, 600 °C with negligible velocity and exhausts at 200 kPa with a velocity of 180 m/s
Two flat, rectangular plates with a lateral dimension w*l lie parallel, one above the other, a distance h apart. The gap between them is filled with molten polymer.
A heat pump with a COP (coefficient of performance) of 2.8 is used to heat an air-tight house. When running, the heat pump consumes 5 kW of power
If the chest is completely filled with ice, calculate the time for the ice to completely melt. State your assumptions. The enthalpy of fusion for water is 330 kJ/kg.
during an emergency launch operation to fill a missile with rp-4 the volume of a well insulated fuel storage tank is
An Industrial water shutoff valve is designed to operate with 30lbs of force and will encounter 200lbs of resistance force applied to a 1.5in diameter axle. What is the required actual mechanical advantage of the system?
Find the final state inside the tank, A tank contains 2kg of nitrogen at 10K with a quality of 50%.Through a volume flow meter and valve, 0.5kg is now removed while the temperature remains constant.
the masses of the bar and the disk are 5 kg and 10 kg respectively. the coefficient of kinetic frictionnbspbetween the
A 0.4 W cylindrical electronic component with a diameter of 0.3 cm and length 1.8 cm is mounted horizontally on a circuit board. To cool the component air is flowing across the board at a velocity of 150 m/min. If the air temperature is T∞= 45°C, ..
Calculate the time rate of change dHB/dt of angular momentum about point B when the particle passes the bottom of the guide at C.
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