AN EXPLORATORY INVESTIGATION OF JET-BLAST EFFECTS ON A DUST-COVERED SURFACE AT LOW AMBIENT PRESSURE
Abstract
A preliminary investigation was conducted to determine the effects of jet blast, at low ambient pressures, on a surface covered with loose particles. Test configurations had from one to four nozzles at various cant angles and heights above the particle-covered surface. Results indicate the possibility that problems may exist, due to jet-blast effects, ranging from visibility impairment to damage from impact of the surface particles with the vehicle. In single-nozzle tests the jet blast cleared the dust particles from an annular area on the test surface; however, a buildup of dust particles immediately under the nozzle was observed. This buildup of particles persisted throughout the test run. Multiple-nozzle systems having two or three nozzles in line at cant angles of 0 degrees and placed close together provided sufficient clearing of the landing area without causing surface particles to strike the vehicle.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1962
- Accession Number
- AD0272362
Entities
People
- Amos A. Spady Jr
Organizations
- National Aeronautics and Space Administration