LINCOLN LABORATORY ANALYSES OF PARABOLOIDAL SHELLS (LLAPS): USER'S MANUAL
Abstract
The quest for more and more precise radars in the ultra-high frequency regime has imposed stringent requirements on the structural behavior of large antennas. The tolerance requirements for an antenna surface at 10,000 Mcps, for instance, are generally set at about 1/16 of the operating wavelength. At a frequency of 10,000 Mcps, this is 3/16 of a centimeter or 0.074 inch. Such a tolerance on the permissible distortions of a structure which may be a hundred feet or more in overall size, and which assumes different orientations with respect to the direction of gravity, requires an extremely high degree of sophistication in analysis, design, and construction. This user's manual will describe the capability, potentiality, and idiosyncrasies of the various LLAPS (Lincoln Laboratory Analyses of Paraboloidal Shells) computer programs which are products of the above study. These programs are all directed at the deflection problem of antennas although the force and moment resultants are also available.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 17, 1964
- Accession Number
- AD0614818
Entities
People
- E. Shea
- F. Y. Wan
- J. W. Mar
Organizations
- Massachusetts Institute of Technology