Technical and Practical Aspects of Systems for Simulationg Clouds for Flight Test Evaluations
Abstract
A study of the physics of cloud simulation with water spray systems in tanker aircraft indicates that cloud diffusion is primarily a result of nozzle wake effects in such manner that cloud diameter is a function of distance behind the tanker. The study shows that initial velocity of water jets determines mean droplet diameters and droplet range; droplet range and terminal velocity are quite small for cloud sized droplets but are significant for large droplets; and that droplet range and terminal velocity can be used to cause tendencies for the location of large droplets in the outer and lower cloud edges respectively. Tables and graphs are presented for use with problem solutions and with the present nozzle assembly. A manifold type air-water nozzle is also discussed and should provide a major improvement in cloud simulation capability and effectiveness.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 14, 1959
- Accession Number
- AD0228553
Entities
People
- James K Thompson