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4924593 |
Method for aligning a two-axis platform
A two-axis platform comprises an azimuth gimbal rotatable about an azimuth axis. In the azimuth gimbal an inner gimbal is mounted about an axis. A two-axis gyro having input axes and a spin axis is...
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4749926 |
Automatic trim tab control system
An automatic trim control system designed to be used on power boats equipped with electric or hydraulic actuated trim tabs is disclosed. The unit senses out of trim conditions in two planes (pitch...
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4218822 |
Visual-display device with error correction
In order to correct errors in the reading of a graduated scale, especially on a compass card driven by a damped gyroscopic system, the scale is juxtaposed with a block having slits simultaneously...
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4010549 |
All solid state analog gyromagnetic compass system
An all solid state gyromagnetic compass system operable in the slaved, compass and free gyro modes wherein magnetic compass error rates, fast or slow slaving rates, gyro drift rates, earth's rate...
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3921305 |
Method and apparatus for digitally operating a compass card in a navigation system
A pictorial navigation system includes a stepper motor driven compass card. Digital information is picked off of a gyro, decoded to determine direction and processed through a motor sequencer to...
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3858328 |
MEANS AND TECHNIQUES USEFUL IN GYROS
This specification described gyros in which the spin axis is maintained in alignment with a particular direction which in some cases may be the direction of an ambient magnetic field or a component...
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3849895 |
DEVICE FOR SMOOTHING A HEADING INDICATED BY A COMPASS
A smoothing system for a ship's heading indicated by a compass. The rotor of an azimuth (directional) gyro is in a cardanic suspension in a gyro housing mounted on a stabilized platform. During a...
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3844051 |
HEADING INDICATOR, ESPECIALLY FOR LAND VEHICLES
A heading indicator for power-driven units, especially land vehicles, is disclosed which comprises a rate gyro, an integrator controlled by the gyro and a comparator for generating an output signal...
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3837086 |
COMPASS COUPLER
Apparatus for comparing heading angle information provided by a directional gyro with that provided by a magnetic heading device (compass), and providing a bipolar d.c. error signal corresponding...
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3831286 |
NAVIGATIONAL APPARATUS
The invention provides navigational apparatus in which the power supply for a detector measuring the magnetic heading of the vehicle to which the apparatus is fitted, is effectively isolated from...
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3725691 |
ELECTRONIC DEVICES FOR FORMING ALGEBRAIC SUMS
An electronic device is arranged to correct the angle A of gyroscopic heading for variations in the magnetic deviation angle a, thereby producing the angle (A + a). A synchro transmitter generates...
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3234444 |
Gimbal error compensating system
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3037289 |
Directional reference correction system
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2969208 |
Navigation and automatic control apparatus for aircraft
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2958953 |
Indication system
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2922224 |
Navigation system employing star heading reference
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2854763 |
Navigation system
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2853795 |
Compass direction indicating system
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2800723 |
Stabilized magnetic compass
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