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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)
solution of oblique-angled triangle all threesides known two side at 7.5 in. and base at .3437 in. what are the angles ?
The airspeed of an aeroplane is measured with a Pitot tube. The plane is flying at an altitude of 10000m, and the Pitot tube measures a gauge pressure of p = 10kPa. What is the airspeed of the plane?
a) What is the temperature and state of the steam in the pipe? b) What is the quality of the steam in the pipe?
Air enters a 0.6 m diameter fan at 16 deg C, 101 kPa, and is discharged at 18 deg C, 105 kPa, with a volumetric flow rate of 0.35 m^3/s.
Solve for the dynamics of the resulting system for 20 seconds of real time using midpoint method.
A) Calculate the velocity in the tunnel test section. B) Compute the total pressure at the test section.
Water drips at the rate of 5 drops per second from a leaking tap. Determine the vertical distance between two consecutive drops after the lower drop has attained a velocity of 3 m/s.
A bullet is fired horizontally into a wood block resting on a horizontal, frictionless surface. If the mass of the bullet is 0.02 Kg and the velocity is 600 m/s
Calculate the torque on each of the two shafts,the power transmitted and the power lost in friction. U=0.3 what is the efficiency of the drive.
Whit is the critical crack length in iron according to the Griffith-Orowan equation if surface energy=10^3J/m^2?
What load P allow can be supported at the midpoint of the bar if the yield stress in the steel wires is 220 MPa and in the aluminium wire is 80 MPa? A saftey factor of n = 2 is needed.
Use steam tables to compute the total volume, total enthalpy, and total entropy of 1kg of water at 100o C, half by weight of which is steam and the remainder is liquid water.
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