AIRCRAFT PROPELLER CORONA THRESHOLD AND ITS EFFECT ON PRECIPITATION STATIC NOISE REDUCTION,
Abstract
A study of aircraft propeller corona threshold potentials is made to determine the effect discharges from the propellers have on the problem of precipitation static interference. The aircraft potential at which the propellers go into corona is determined as a function of aircraft size, propeller size, and engine location. The propeller threshold potentials are used with data from earlier precipitation static studies to calculate the number of passive dischargers required to handle a given charging rate without interference from propeller corona. In general, it is found that, unless the propellers are modified to prevent or decouple noise produced by propeller corona, a very large number of dischargers is required to provide noise reduction on a propeller aircraft that is comparable to the noise reduction obtained with 21 dischargers on a jet transport. Some possible methods of preventing propeller corona noise are discussed. The problems of discharging helicopters and other hovering aircraft are also discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1963
- Accession Number
- AD0423414
Entities
People
- E. F. Vance
- J. E. Nanevicz
Organizations
- SRI International