flat spin


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flat spin

an aircraft spin in which the longitudinal axis is more nearly horizontal than vertical

flat spin

[¦flat ′spin]
(mechanics)
Motion of a projectile with a slow spin and a very large angle of yaw, happening most frequently in fin-stabilized projectiles with some spin-producing moment, when the period of revolution of the projectile coincides with the period of its oscillation; sometimes observed in bombs and in unstable spinning projectiles.

flat spin

flat spin
A spin in which the aircraft longitudinal axis remains at less than 45° below the horizontal. A flat spin is a stabilized spin. The farther back the center of gravity and the more the masses that are distributed along the length of the fuselage, the flatter and faster the spin tends to become and the more difficult it is to recover. This is because it is difficult to reduce the angle of attack to unstall the aircraft even with full application of the elevator control.
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References in periodicals archive ?
This enables the car to go around corners at speeds that would send most of its rivals into a flat spin.
Shortly after it reached orbit in 1969, NASA's spin-stabilized Applications Technology Satellite 5 (ATS5) began to wobble, sending the spacecraft into an unplanned flat spin and crippling the mission.
WHILE most teenagers are looking forward to spending the summer with their feet up, Katrina Bevan will be in a flat spin representing her country at the European Frisbee Championships in Latvia.
The aircraft began to roll sharply and, after becoming locked in a dangerous flat spin, the pilot gave the order to eject at 10,000ft.
runnings of this race with Prince Tum Tum and Flat Spin, and Mutahayya is called on to try to complete the hat-trick for the Arundel stable.
Most of the birdmen of the past died because the wind would catch one wing slightly more than the other and send them into an unstoppable flat spin.
Beaten less than six lengths by High Chaparral in last season's Group One Racing Post Trophy, Redback returned this term with a third behind Flat Spin in the Easter Stakes at Kempton.
AT Kempton, John Dunlop - who underwent heart surgery in the winter - showed he and his horses are back in good health by landing a 44-1 double with Kootenay and Flat Spin.
Flat Spin came from last to first to lift the Easter Stakes, for colts and geldings, and Kootenay headed a 1-2 for the Dunlop stable in the Masaka Stakes, for fillies.
He stepped up on that effort next time at Newbury in August when he ran on strongly inside the final furlong, but failed by a neck to catch Flat Spin.
I can't concentrate at work and I'm in a flat spin.
When thrown into a corkscrew turn and dive -- the usual evasive action -- it tended to flip over into a flat spin from which it was almost impossible to recover.