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Satellite: Assume disturbance torques are zero and spacecraft moment of inertia is 400 kg.m2 about the rotation axis. Assume a reaction wheel with max torque capability of 0.025 Nm and angular momentum capacity of 4 Nms at 5100 RPM. Design a control system to stabilize the vehicle in less than 30 minutes for an initial pitch angle of 30 degrees from 0 (reference), while satisfying the wheel constraints. Determine the gains of the controller and plot the spacecraft attitude, spacecraft angular velocity, wheel speed, wheel angular momentum and wheel torque as a function of time.
The plate is submerged in a liquid is a vertical position with the parallel sides horizontal and the shorter parallel side at the top and exactly in the surface of the liquid. The static moment of the plate with respect to the surface of the liqui..
Refrigerant R-134a vapor in a piston-cylinder assembly undergoes a constant-pressure process from saturated vapor at 800 kPa to 50 ºC.
the walls of an insulated lunch box are made of inch-thick styrofoam with a thermal conductivity of 0.05wmk. if an ice
How many engagement points on the flywheel would be necessary to make this machine safe? Show your work.
why is the correct tightening of friction grip bolts important?
Calculate these two sets of centerline and control limits. Once points are plotted, how will the results of these two charts differ?
Please find the mass of gasoline fuel injected into each cylinder in each working cycle.
Gravitational forces pull the two stars together. What is the speed of each star at the moment of impact?
Calculate the concentration of vacancies in Pb at its melting temperature of 327oC. Assume an energy for vacancy formation of 0.55 eV/atom. Lead has an atomic weight of 207.2 g/mol and a density of 11.35 g/cm3.
why does a car engine stop when we turn the key even when the vehicle is running? the engine should run on alternator
a venturi meter is inserted in a pipe whose diameter is 12 in. the diameter of the meter at its throat is 6 in. and the
determine the slenderness ratio of a 5 m column with built end if its cross section is a circular with a radius of 40 mm and b 50 mm square use the concept of effective length.
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