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Boeing 727

A series of flight tests using a Boeing 727 jetliner were conducted in 1973-1974 at the NASA Flight Research Center (FRC) to study the effects of wake vortices emanating from the trailing edges of the wings. The NASA study in conjunction with the Federal Aviation Agency (FAA) was in response to the hazards being encountered when small aircraft trailing behind new large jumbojets experienced "upset" problems. The Boeing 727 was equipped with smoke generators for visual tracking of the wing wake vortex trail.

DFRC Photo # Photo Date Image Description
  Skip links in main table Boeing 727 Photo Collection Contact Sheet
ECN-3831 November 15, 1973 B-727 in flight during vortex study

Additional Information

The wing wake vortex trail was probed to measure its force and effects, by two specially instrumented chase aircraft a PA-30 and a F-104. The effect of wing vortex on two different airport landing glide slopes, one (normal) of 3 degrees and a second, steeper 6 degrees approach, were also studied. These tests helped to define vortex drift and dissipation near the runway for different meteorological conditions and glide slopes.

Last Modified: July 28, 1996
Responsible NASA Official: Marty Curry
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