Coupled Thermally-induced Transverse Plus Torsional Vibrations of a Thin-walled Cylinder of Open Section
Harold P. Frisch · United States. National Aeronautics and Space Administration
Jan 1970 · National Aeronautics and Space Administration
eBook
110
Pages
About this eBook
Long thin-walled cylinders of open section (STEM type booms) have been used on many satellites either for experimentation or Gravity Gradient stabilization. Equations for the coupled transverse plus torsional oscillations of a long open section cylinder in direct sunlight are derived. Numerical results show that unstable thermally induced oscillations can be excited solely by the impinging thermal energy of the sun. It is shown that this is a direct result of the boom's extreme weakness in torsion. By literally zippering the boom's open section, to increase its torsional rigidity, the problem can be eliminated. Flight data from OGO IV, V, VI and RAE are cited to support the theoretical findings.
Rate this eBook
Tell us what you think.
Reading information
Smartphones and tablets
Install the Google Play Books app for Android and iPad/iPhone. It syncs automatically with your account and allows you to read online or offline wherever you are.
Laptops and computers
You can listen to audiobooks purchased on Google Play using your computer's web browser.
eReaders and other devices
To read on e-ink devices like Kobo eReaders, you'll need to download a file and transfer it to your device. Follow the detailed Help Centre instructions to transfer the files to supported eReaders.
