Leading-Edge Slat

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Leading-Edge Slat

 

a supplementary lifting surface (vane) in the leading edge of an aircraft wing; it increases the lift of the wing, thus improving the stability and reducing the landing speed of the aircraft.

Leading-edge slats may be either fixed or retractable. A leading-edge slat can be extended or retracted automatically upon a change in the angle of attack of the wing or on a command from the pilot in the cockpit by means of hydraulic, pneumatic, or electric drives. The performance improvement mentioned above can also be produced by deflecting the leading edge of the wing (leading-edge flap).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
A joint FAA-Boeing investigation found that up to 148 items of a part known as a leading-edge slat track made by a Boeing supplier could be "susceptible to premature failure or cracks", Reuters reported.
Not having pylon-mounted engines helped simplify things a lot, but the real tricks were in the slotted Fowler flaps and leading-edge slats all 727s came with, and which are now commonplace aboard jet transports of almost any size and configuration, as well as general aviation airplanes.
It has a distinctive high wing which incorporates leading-edge slats and trailing-edge flaps to give short-take-off-and-landing capability.
British Airways, Boeing South Africa's Civil Aviation Authority has praised the airmanship of British Airways Boeing 747-400 pilots who battled to prevent a low-altitude stall after the leading-edge slats unexpectedly retracted during lift-off from Johannesburg.
While completing a turnaround inspection prior to aircraft launch, Petty Officer Hood discovered that the leading-edge slats on the starboard wing were worn in several areas, which indicates metal-on-metal rubbing.
The Swiss VIP charter services company and cabin completions specialist has also embarked on a risk-sharing partnership with Belgian aerostructures company Sonaca to offer polished leading-edge slats to operators of Airbus ACJ aircraft.
Its latest incident, involving an issue with the electrical system deploying leading-edge slats, follows the cancellation of a service from New York Kennedy in mid-December.
CAA investigators explain that during the take-off run there was a false indication that the Nos 2 and 3 engine thrust reversers had unlocked, which automatically triggered retraction of the inboard wing leading-edge slats at the point of rotation for take-off.
Belgian aerospace manufacturer Sonaca Group is to pay [euro]3 million ($3.8 million) to Airbus to correct problems on a batch of leading-edge slats. Some 300 slats for Airbus A330 and A340 aircraft have been found to have the problem.
and include a two-position tail skid that reduces approach speeds, sealed leading-edge slats for lift and increased spoiler deflection on the ground.