directional gyro


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directional gyro

[də′rek·shən·əl ′jī·rō]
(aerospace engineering)
A flight instrument incorporating a gyro that holds its position in azimuth and thus can be used as a directional reference. Also known as direction indicator.
(mechanics)
A two-degrees-of-freedom gyro with a provision for maintaining its spin axis approximately horizontal.

directional gyro

directional gyroclick for a larger image
directional gyro
i. A two-degree-of-freedom gyro with a provision for maintaining its spin axis approximately horizontal.
ii. A flight instrument incorporating a gyro that holds its position in azimuth and thus can be used as a directional reference.
References in periodicals archive ?
Place the paper clip on the face of the directional gyro with the tail on the holding radial.
Kelly's Jim Turner told us the unit is currently in development, as is an electronic directional gyro.
The LSO didn't see the ship turning, because it was nighttime and the directional gyro lights in the landing Control Station were burnt out, which made the gauge hard to use for quick reference.
It's esssentially a wing leveling and nay tracking system that's integrated into a turn coordinator/controller, with optional heading command (requiring a compatible directional gyro, HSI or PFD).
There are things that can go wrong with an otherwise high-quality instrument, like the Sigma Tek 4000B-series directional gyro, that don't warrant a complete overhaul.
Crossbow's VG400CB, AHRS400CB, and the AHRS500CB are new solid-state attitude and heading reference systems that combine the functionality of a high-performance IMU (inertial measurement unit) with vertical and directional gyro capabilities.
One of the reasons pilots so feared a vacuum or gyro failure is they were insidious: Unless the airplane is equipped with some kind of low-vacuum warning system, the first indication of the failure is a spinning directional gyro or a leaning attitude indicator.
For example, if your plans eventually include an Aspen or Garmin G500, installing a $4000 GPSS system and $2000 directional gyro will be wasted when the PFD is installed since that functionality will be built in.
Crossbow's VG400CB, AHRS400CB, and the AHRS500CB are the latest members of the company's solid-state attitude and heading reference systems that combine the functionality of a high-performance IMU (inertial measurement unit) with vertical and directional gyro capabilities.

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