The Measurement of Dipole Angle Distribution at Typical Aircraft Altitudes.
Abstract
Measurements were made of the distribution of the flight angle of aluminised glass chaff dipoles at a simulated altitude of 10 km and a temperature of minus 20 degrees Centigrade. The method employed was to dispense the dipoles in an airstream flowing vertically upwards, photograph the dipoles and analyse the film. The vertical airstream was obtained from a vertical wind tunnel and the experiment placed a complete wind tunnel with all of the support and measurements facilities of lighting system, dipole dispenser, and cameras into a high altitude chamber and recorded the dispersion of the dipoles, the growth of the cloud of dipoles and the angle of flight of the individual dipoles. The whole experiment was conducted by remote control from outside of the altitude chamber. Measurements were also made under sea level conditions for comparison with earlier experiments. The final results were that the flight angle characteristics at high altitude were virtually identical to those at sea level.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 29, 1986
- Accession Number
- ADA173646
Entities
People
- J. H. Wilkin