Slipstream Effect
The slipstream effect, in aerodynamics, is the reduced air pressure and forward suction immediately behind a rapidly moving object like a car or plane, which can be used to reduce drag and gain speed, as seen in racing and other applications.
History and Context
Early Observations
The concept of slipstream and its effects on aerodynamic drag was noticed early in the development of vehicles and aircraft.
Train Slipstream
In the 1960s and 1970s, the issue of train slipstreams became important, with instances of debris around the track being moved and causing damage, including to windscreens of cars being transported on trains.
Motorsports
In motorsport, particularly in Formula 1 and other open-wheel racing, drivers use the slipstream created by the car ahead to reduce drag and gain a speed advantage, especially on long straights.
Cycling
In cycling, riders also use slipstreams to conserve energy by riding close behind other riders, benefiting from the reduced drag.
Aircraft Design
The slipstream effect is also relevant in aircraft design, particularly regarding the interaction between propellers and wings, and the effects on lift and control surfaces.
NASA Research
NASA has conducted research on the slipstream effect, including studies on the effects of the propeller slipstream on aircraft performance.
Deflected Slipstream
The Ryan VZ-3RY V/STOL deflected-slipstream test vehicle, developed by NASA, exhibited strong STOL features, but an adverse ground effect, brought about by the recirculation of the propeller slipstream, severely restricted operation at very low airspeeds.
Slipstream Fiction
The term "slipstream" has also been adopted as a literary genre, described as nonrealistic fiction with a postmodern sensibility, exploring societal and technological change and psychological breakdown.
