laser gyro — laser gyro, a gyroscope having a ring of laser light instead of a wheel to indicate change in direction, usespecially in guidance systems to space flight … Useful english dictionary
ring laser gyro — A highly accurate way to measure change in an angular position or at an angular rate without the use of any mechanically spinning wheel. The ringed laser gyro principle is based on the small frequency difference produced between two laser beams… … Aviation dictionary
Ring laser gyroscope — For a somewhat similar system that uses fibre optic cables, see fibre optic gyroscope. A ring laser gyroscope (RLG) consists of a ring laser having two counter propagating modes over the same path in order to detect rotation. It operates on the… … Wikipedia
fiber-optics gyro — A fiber optics gyro measures a rotation by passing a coherent light both ways simultaneously around a loop of mono mode optical fiber. The rotation is measured instantly by a phase shift at the output. This device is not a gyro, even though it… … Aviation dictionary
electric gyro — A gyroscope propelled by electricity. Almost all modern gyros are electrically driven. Earlier era gyroscopes were air driven. Air driven gyroscopes are still used in sailplanes, gliders, and some light aircraft. Electrical gyros are now giving… … Aviation dictionary
LGIO — • Laser Gyro Interface Unit NASA • ICAO Airportcode f. Ioannina (Greece) … Acronyms
Inertial navigation system — An Inertial Navigation System (INS) is a navigation aid that uses a computer and motion sensors to continuously track the position, orientation, and velocity (direction and speed of movement) of a vehicle without the need for external references … Wikipedia
Sagnac effect — The Sagnac effect (also called Sagnac Interference), named after French physicist Georges Sagnac, is a phenomenon encountered in interferometry that is elicited by rotation. The Sagnac effect manifests itself in a setup called ring interferometry … Wikipedia
Glossary of military abbreviations — List of terms, acronyms, information, related to modern armour, artillery, infantry, weapons, and related military subject matter.* AA anti aircraft * AAA anti aircraft artillery Triple A * AAAV Advanced Amphibious Assault Vehicle * AAD Armoured… … Wikipedia
General Dynamics F-111 — infobox Aircraft name= F 111 Aardvark caption= An F 111C of the Royal Australian Air Force with its wings unswept in 2006. type= Fighter bomber national origin = United States manufacturer= General Dynamics designer= first flight= 21 December… … Wikipedia
Three mirrors are mounted in a triangular fashion. A beam of coherent light is reflected by these mirrors should the assembly rotate in the same direction as the beam. The frequency of the beam will increase and the converse will take place in the reverse direction. The change of frequency is a measure of rotation of the assembly. In actual practice, a second beam is sent in the opposite direction. The frequency difference between these two beams gives the angular rate of rotation of the table.