REPEATABILITY, DRIFT, AND AFTEREFFECT OF THREE TYPES OF AIRCRAFT ALTIMETERS
Abstract
IN A SERIE OF LABORATORY TESTS OF A NUMBER OF SENSITIVE ALTIMETERS (Air Force type C-12 and C-13) and of precision altimeters (Air Force type MA-1), the repeatability was determined for the full range of each type of instrument, the drift characteristics were determined during 1-hour periods at various altitudes, and the drift and aftereffect were measured for a variety of simulated flights representative of some civil and military operations. For comparable altitude ranges, the repeatability errors of the C-12 and C-13 types were generally of the same order while those of the MA-1 type were somewhat smaller. The drift and aftereffect of the C-12 instruments were smaller than those of the C-13 instruments, and the drift and aftereffect of the MA-1 altimeters were considerably smaller than those of both types of the sensitive instruments. The drift of each of the three types of altimeters was found to increase with altitude and the drift of the precision type was found to increase with increasing rate of altitude change preceding the drift test. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1961
- Accession Number
- AD0260639
Entities
People
- Richard E. Stell
- William Gracey
Organizations
- National Aeronautics and Space Administration