Thrust

Thrust is a reaction force described quantitatively by Newton's second and third laws. When a system expels or accelerates mass in one direction, the accelerated mass will cause a force of equal magnitude but opposite direction on that system. The force applied on a surface in a direction perpendicular or normal to the surface is called thrust. Force, and thus thrust, is measured in the International System of Units (SI) as the newton (symbol: N), and represents the amount needed to accelerate 1 kilogram of mass at the rate of 1 metre per second squared.

In mechanical engineering, force orthogonal to the main load (such as in parallel helical gears) is referred to as thrust.

Examples

A fixed-wing aircraft generates forward thrust when air is pushed in the direction opposite to flight. This can be done in several ways including by the spinning blades of a propeller, or a rotating fan pushing air out from the back of a jet engine, or by ejecting hot gases from a rocket engine. The forward thrust is proportional to the mass of the airstream multiplied by the difference in velocity of the airstream. Reverse thrust can be generated to aid braking after landing by reversing the pitch of variable-pitch propeller blades, or using a thrust reverser on a jet engine. Rotary wing aircraft and thrust vectoring V/STOL aircraft use engine thrust to support the weight of the aircraft, and vector sum of this thrust fore and aft to control forward speed.

Thrust (rapper)

Chris France (born July 8, 1976), better known by his stage name Thrust, is a Canadian rapper from Toronto, Ontario. He is most known for his appearance on the Rascalz' 1998 single "Northern Touch" which also features Kardinal Offishall, Choclair, and Checkmate. He was also featured on the pop band soulDecision's biggest hit "Faded".

Thrust now teaches "Artist Series" at the Harris Institute in Toronto.

Discography

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Thrust (science fiction magazine)

Thrust was published from 1973–1991. It started off as a Fanzine by Doug Fratz Steven L. Goldstein at the University of Maryland until 1976. In 1978, Thrust became a trade magazine.

Thrust was a magazine for science fiction fans, offering commentary and criticism of work published within the genre. Nominated for a Hugo Award for Best Fanzine in 1980, it received four other nominations for best semi-prozine in the following years (1988, 1989, 1990, and 1991). As a trade magazine, it expanded rapidly, moving to offset covers. Ultimately the circulation rose to 1,700. Columnists at various times included Ted White, Charles Sheffield, Lou Stathis, John Shirley, Michael Bishop, David Bischoff, Chris Lampton, Darrell Schweitzer and Jeffrey Elliot. Dan Steffan provided art direction for the magazine.

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