Reducing Takeoff and Landing Distances by Using the Airlift Effect on the Wings,
Abstract
A survey of the use of the air-lift effect on foreign aircraft, and results of Czech studies on the subject are presented. The air-lift effect is considered especially appropriate for aircraft with jet or by-pass jet engines, where the ratio of motor thrust to aircraft weight is greater than 0.35, and with a relative wing profile width less than 12%. These conditions are found to be best fulfilled in supersonic fighter planes where the relative wing profile width is less than 4%. So far the air-lift effect has been used mainly in military planes in which air is extracted from the jet propulsion engine; now there is a tendency to apply the air-lift for aerodynamic boundary layer and flow control. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 19, 1968
- Accession Number
- AD0850265
Entities
People
- Vilem Kocka
Organizations
- National Air and Space Intelligence Center