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Impact of debris, both natural and artificial, is a significant hazard for spacecraft. Space Shuttle windows are routinely replaced because of damage due to impact with small objects, and recent flights have employed evasive maneuvers to avoid impact with larger objects, whose orbits NASA constantly monitors. For the triangular shape window and the relative velocity of approach vE shown, determine the components and vector components of the velocity in directions normal and tangent to the window. Note that this information is needed before an analysis of damage due to impact can be performed.
A rectangular cavity consists of two parallel, 0.5-m- square plates separated by a distance of 50 mm, with the lateral boundaries insulated. The heated plate is maintained at 325 K and the cooled plate at 275 K. Esti- mate the heat flux between th..
Air enters an adiabatic compressor at 0.1 kg/s, 100 kPa, 25 °C and exits at 700 kPa. (a) Draw a schematic of the system. Determine (b) the minimum power input (kW) and (c) the entropy generation rate (kW/K)
A small ceramic crucible (mass of 0.26 kg) has just been washed and rinsed. Before it can be reused, it must be absolutely dry. To ensure that no residual water is present, the crucible is heated to 150 C from room temperature (23 ?C). How much heat ..
Define ‘mechanical property' of an engineering material. State any six mechanical properties, give their definitions and one example of the material possessing the properties.
Two channels are welded to a rolled W section as shown. Determine the moments of inertia and the radii of gyration of the combined section with respect to the centroidal x and y axes
a piston-cylinder device initially contains .35 kg steam at 3.5 mpa super-heated by 7.4 c. now the steam loses heat to
A gear set has a module of 5mm, a 20° pressure angle, and a 24-tooth case-iron spur pinion driving a 48-tooth case-iron gear. The pinion is to rotate at 50 rev/min. What horsepower input can be used with this gear set if the contact stress is limited..
Calculate the following for the function f(x) = e-3x - 2x. Calculate the derivation of the function by hand. Write a MATLAB function that calculates the derivative of this function and calculate the derivative at x = 0.5
Calculate the formation constant for the reaction
Determine the maximum number of teeth, per groove, that can be in contact with the workpiece when cutting dry and calculate the percentage reduction in the pull force on the broaching bar
A balanced-cross-flow compact heat exchanger is required for an air heating system that processes 0.5 kg/s air. The inlet temperature for the hot water is 295 K, and the cold air enters at 270 K to be heated to 287 K. The inlet pressure for the hot w..
a brayton cycle is the same as the rankine cycle but it takes place in the ideal gas region of states. a large
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