Accession Number : AD0261374

Title :   THE NEUTRALIZATION OF ION-ROCKET BEAMS

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION WASHINGTON D C

Personal Author(s) : KAUFMAN,HAROLD R.

Report Date : AUG 1961

Pagination or Media Count : 1

Abstract : AD-2 1 3749N2 AD-261 375Div. 1U (16 Aug 61) OTS price $1.00 National Aeronautics and Space Administr tion, Washington, D. C. SOUND PRESSURES AND CORRELATION OF NOISE ON THE FUSELAGE OF A JET AIRCRAFT IN FLIGHT, by Russell D. Shattuck. Aug 61, 32p. incl. illus. tables ( NASA technical note no. D-1086) Unclassified reportAlso available from NASA, Wash. 25, D. C., as NASA Technical note D-1086. DESCRIPTORS: *Jet plane oi , Fus lages, Pressure, Flight testing, Boundary layer, *Jet engine noise, Flight, Velocity, Jet bombers, Acoustics, Microphones, Sound, Jet planes, Measurement. Open-ended Terms: B-57. T s r co uc l itu es of 10,000, 20,000, and 30,000 feet at speeds of Mach 0.4, 0.6, and 0.8. It was found that the sound pressure levels on the aft fuselage of a jet aircraft in flight can be estimated using an equation involving the tru airsp d an th fr e air d n ity. The cross-correlation coefficient over a spacing of 2.5 feet was generalized with Strouhal number. The spectrum of the noise in flight is comparatively flat up to 10,000 cycles per second. (Author)

Descriptors :   *ELECTRONS, *ION BEAMS, *ION ENGINES, *IONS, KINETIC THEORY, NEUTRALIZATION, PLASMAS(PHYSICS), PROPULSION SYSTEMS, SECONDARY EMISSION

Distribution Statement : APPROVED FOR PUBLIC RELEASE