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Retreating blade stall is a hazardous flight condition in helicopters and other rotary wing aircraft, where the retreating rotor blade has a lower relative blade speed, combined with an increased angle of attack, causing a stall and loss of lift. Retreating blade stall is the primary limiting factor of a helicopter's never exceed speed, V NE. [1]
In aeronautics, a spoiler (sometimes called a lift spoiler or lift dumper) is a device which increases the drag and decreases the lift of an airfoil in a controlled way. Most often, spoilers are hinged plates on the top surface of a wing that can be extended upward into the airflow to spoil the streamline flow.
Stationary Low-Power Reactor Number One, also known as SL-1, initially the Argonne Low Power Reactor (ALPR), was a United States Army experimental nuclear reactor in the western United States at the National Reactor Testing Station (NRTS) in Idaho about forty miles (65 km) west of Idaho Falls, now the Idaho National Laboratory.
Download as PDF; Printable version; In other projects Wikidata item; ... Hydraulic lift may refer to: A type of hydraulic machinery. Hydraulic elevator; A form of ...
The section lift coefficient is based on two-dimensional flow over a wing of infinite span and non-varying cross-section so the lift is independent of spanwise effects and is defined in terms of ′, the lift force per unit span of the wing. The definition becomes
Lift-off is applied in cases where a direct etching of structural material would have undesirable effects on the layer below. Lift-off is a cheap alternative to etching in a research context, which permits a slower turn-around time. Finally, lifting off a material is an option if there is no access to an etching tool with the appropriate gases.
Leitner Ropeways is a business that manufactures and distributes products and equipment for ropeways, snow groomers, urban transportation systems, and wind energy in Italy and internationally.
Johnson Lifts started out doing lift maintenance. [8] The company installed its first lift at the New Woodlands Hotel in Chennai in 1966. [1] It began manufacturing lifts in 1970. [8] Johnson Lifts started out with a small manufacturing unit at Vyasarpadi, before moving to a larger facility in Ambattur in 1988. [9] K.J. John died in 2002. [8]