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 I_zz = 85 kg-m², and  I_xx = I_yy =2530 kg-m².

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

Ask an Expert

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

Write your message here..

Related Questions

Describe critical angle, The measurements taken in Ramdesns eyepiece more w... The measurements taken in Ramdesns eyepiece more worthy (reliable) than Huygens eyepiece. Why? Describe critical angle. show its relationship with refractive index.

Explain the term modulation, Explain the term modulation. Name three dissim... Explain the term modulation. Name three dissimilar types of modulation used for a message signal using a sinusoidal continuous carrier wave. Describe the meaning of any one of thes

Turning effects of force, unlike Parallel forces unlike Parallel forces

Pulses, what exactly is pulse height analysis what exactly is pulse height analysis

Kinematics equation, A sprinter runs 100.0 m. If he travels at constant acc... A sprinter runs 100.0 m. If he travels at constant acceleration of 1.95 m/s2 for the first 6.00 s, and then at constant velocity for the remaining time, what was his average veloci

How do you find your body volume using a tape measure, How do you find your... How do you find your body volume using a tape measure? ACCURATELY calculates a container into which your body will fit comfortably. Once you know the volume, fill the containe

Quantum theory, a yellow lamp emits light with a wavelength of 6.00E-7 mete... a yellow lamp emits light with a wavelength of 6.00E-7 meters. Calculate the frequency of the yellow light.

Get an expression for work done, Get an expression for work done during rev... Get an expression for work done during reversible isothermal expansion. Get the terms open, isolated and closed system. Give examples.

Example on diffraction, Diffraction is the spreading of light that takes pl... Diffraction is the spreading of light that takes place when it pass through a thin slit or small hole or passes by an obstacle Answer: Diffraction is the spreading of any k

Friction, a magnatic train a magnatic train