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

Gravitational field intensity , Each particle produces a gravitational fiel... Each particle produces a gravitational field around it which exerts the gravitational force on each of the other particles present within this region. The portion around a point ma

Define entropy of ideal gas, Define Entropy of Ideal Gas? A vessel of ... Define Entropy of Ideal Gas? A vessel of volume V 1 contains N molecules of an ideal gas held at temperature T and pressure P 1. The energy of a molecule may be written in t

Kinematic, The angular displacement of a body is a function of time and giv... The angular displacement of a body is a function of time and giving by equation h=10+3t+6t square,where t is in seconds.determine the angular velocity, acceleration when t=5seconds

Kinematics, the difference and examples of kinematic in one dimension from ... the difference and examples of kinematic in one dimension from two dimension?

Explain corrosion, Explain corrosion This corrosion can happen either ... Explain corrosion This corrosion can happen either when a conducting liquid is in contact with a metal or when two dissimilar metals /alloys are is partially immersed in a con

# ELECTRONICS, #WHAT IS THE PRINCIPLE OF REGULATOR? #WHAT IS THE PRINCIPLE OF REGULATOR?

Self Gravitational PE, Self Gravitational Potential Energy of matter formin... Self Gravitational Potential Energy of matter forming a thin uniform shell of mass M and radius R is-

Electron distribution, Electron distribution: The atoms of a solid have... Electron distribution: The atoms of a solid have electrons rotating in orbits around the positive nucleus. This is true of gases and liquids as well. These orbiting electrons

High current measurement , High current measurement : In common with si... High current measurement : In common with simple analogue multimeters, the meter used a shunt which is directly connected to a separate 10A terminal. The diagram shows the con

Spinning charges and an inhomogeneous magnetic field 1, Spinning Charges an... Spinning Charges and an Inhomogeneous Magnetic Field 1 A spinning charged object passes by an inhomogeneous magnetic field. This animation is also used within a discussion of t