Compute the pitching motion of the spacecraft, Physics

A spacecraft design similar to GEOSAT proposes to use passive gravity-gradient stabilization for pitch attitude control (motion about the y-axis).  The satellite consists of a tip mass, separated from the main satellite body mass by a rigid boom with length 10 m.  The z-body axis is along the boom, and pitching motion is along the y-body axis (which is opposite the angular momentum vector of the orbit; the +y-axis is into the page).  The spacecraft is in circular LEO (altitude = 800 km).  The satellite is axis-symmetric, and the moments of inertia are Izz = 85 kg-m2, and  Ixx = Iyy =2530 kg-m2.

559_Compute the pitching motion of the spacecraft.png

Compute (by hand) the pitching motion of the spacecraft in LEO for an initial pitch angle of 5 deg.  Assume that the only torque acting on the satellite is the gravity-gradient torque and that the initial angular rates are zero and that no roll/yaw motion exists.  Sketch the pitching motion vs. time for one orbital revolution.

Posted Date: 2/19/2013 2:18:03 AM | Location : United States







Related Discussions:- Compute the pitching motion of the spacecraft, Assignment Help, Ask Question on Compute the pitching motion of the spacecraft, Get Answer, Expert's Help, Compute the pitching motion of the spacecraft Discussions

Write discussion on Compute the pitching motion of the spacecraft
Your posts are moderated
Related Questions
Vector Direction The significance of 'direction' could be seen in the dissimilarity among velocity and speed. In physics, speed is a pure scalar or something along with a magni

Q. The minimum wavelength of X-rays produced in a Coolidge tube is 0.05 nm. Find the operating voltage of the Coolidge tube. λmin = 12400 A 0 / V = 0.5 X 10 -10 m Theref

UV radiations and  X - rays are: UV radiations are produced by the high energy transitions of the electrons in atoms. UV radiations have wavelengths ranging from 0.4 m m to 1n

Shell type transformers .  In this type of transformer the iron core surrounds the copper windings. The core is in the shape of numeral 8.  The entire flux passes by the central pa

How many types of illuminators are there? As there are no standards inside the industry, the term "type" is slightly confusing. Regading to power usage, the lamp illuminators c

when p type and n type semiconductor are joined or connected it is called p-n junction...in p-n junction the holes from p-type diffuse to n-type and vice versa....an finally a depl

What affect does electricity have on soil? Electrical current and ions can cause definite molecules (and moisture) to adhere to soil. Large amounts of current, like a lightning

how to write aasignment on importance of physics

what different is between photons? Answer; the difference between photons depends to their frequency, and frequency depends to the number of CPH in structure of photon. Thus

Can an electron be obtained (or come out) from the nucleus? Yes, electron having energy higher than the ordinary atomic electron might be come out of the nucleus because of be