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4095271 |
Aircraft pitch attitude signal generator
In order to provide a more accurate representation of aircraft pitch attitude for use in aircraft head up display devices, a circuit for generating a computed pitch signal responds to a...
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4094200 |
Method and equipment for making roll and pitch data inputs into a piloting instrument
In a gyro horizon type of equipment, roll corrections are fed to the aircraft symbol which is a normally fixed display element and pitch correction is introduced on a movable display element or...
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4093158 |
Airplane instrument with throttle control selectively regulated by air speed or lift
An aircraft instrument comprising equipment for providing a first signal which is a function of airspeed and suitable for use in controlling an aircraft by variation of the airspeed to a...
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4085440 |
Inertial navigation system
A navigational system for automatically positioning a platform relative to the earth's geopotential surface. A system is provided which includes an accurate self-contained attitude reference to the...
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4083239 |
Peripheral vision horizon device
The invention provides a peripheral vision horizon device for use in projecting a light bar on the interior of an aircraft cockpit or the like to indicate pitch and roll, the light bar being...
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4079905 |
System for providing an indication of wind shear
The output of a transducer providing a signal representing the instantaneous airspeed of an aircraft is differentiated and fed to a summing device. Also fed to the summing device are a signal...
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4074570 |
Fluid speed measuring apparatus
This invention relates to low range fluid speed sensors for the measurement of fluid currents in any direction, down to near zero velocity for dense fluids. Two signals with a 90° space phase...
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4071211 |
Momentum biased active three-axis satellite attitude control system
Control of an active three-axis multiple-wheel attitude control system is provided with a bias momentum to achieve stiffness about the pitch axis. With this stiffness, the system overcomes the...
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4059993 |
System for monitoring water flow angle relative to a boat keel
A sensing vane is placed near the leading edge of the keel of a sailboat where the water flow splits. The vane is deflected away from a "center" position (i.e., a position aligned with the keel) by...
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4059011 |
Method and force determining apparatus for ice breaking vessels
A method and apparatus for providing data related to the ice breaking efficiency of a hull of a vessel as the vessel passes through ice, and particularly for providing data related to the...
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4044975 |
Aircraft speed command system
A system for displaying to the pilot an indication to enable him to fly to a desired air speed and angle of attack, especially on takeoff. An artificial angle of attack error signal is generated...
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4038876 |
Acceleration error compensated attitude sensing and control apparatus and method
A structural body is monitored in angular position about at least one axis by utilizing a tilt sensor responsive to tilt about the one axis and a sensor responsive to angular acceleration of the...
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4039165 |
Derived rate circuit for aircraft
The circuit derives a rate signal from an a.c. signal proportional to attitude displacement provided, for example, from the synchro pickoff of a vertical gyroscope or an inertial navigation system,...
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4032759 |
Shipboard reference for an aircraft navigation system
A low cost shipboard reference system for carrying out the rapid alignment of aircraft inertial platforms in which an aircraft quality inertial reference is installed on shipboard and is operated...
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4023018 |
Navigation system and method
A coordinate indicating and plotting system wherein compass heading signals are periodically integrated at frequencies related to the distance traveled by a water, air or land vehicle to obtain...
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4023016 |
Signal characterizing apparatus
A digital circuit for generating an error correction or otherwise characterized signal having a value which changes in accordance with a second signal such as the speed of an airplane (MACH). As a...
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4009464 |
Apparatus for indicating attitude failure
Apparatus for indicating attitude failure in an attitude indicator system in which energy is stored and isolated from all other apparatus during normal operation and transferred to the attitude...
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4006632 |
Aircraft turn coordinator
An aircraft turn coordinator used in an aircraft to sense both yaw and roll rate along the longitudinal flight axis. The coordinator includes a gimbaled rate gyroscope which is connected to a turn...
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4004460 |
Ship movement measurement
A method and apparatus for measuring and displaying the movement of a ship wherein the longitudinal and lateral velocity of the ship are measured. The longitudinal and lateral velocities are...
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3998411 |
Speed overshoot correction system
A system for compensating for certain speed overshoot problems encountered in large instrument-controlled aircraft during long-term deceleration from high speeds, such as may be encountered in...
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3996787 |
Apparatus for indicating ice accretion
Apparatus for indicating rate of ice accretion includes an endless test surface upon which ice forms in use. A gas flow passage terminates adjacent the surface in an aperture which is presented to...
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3988927 |
Command bar mechanism for flight director indicator
A command driving mechanism for command bars which are rotatable about the longitudinal axis of and transversely displaceable with respect to the horizontal reference line of a flight director...
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3989208 |
Thrust and flight path control decoupling system
Signals representative of the acceleration of an aircraft due to the change in flight path angle are coupled through a high pass filter (washout circuit) to obtain a short term compensation signal...
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3979090 |
Velocity damped erection system for stable gyroscopic attitude and heading reference apparatus
An improved second order gyroscopic attitude and heading reference system including separate variable time constant accelerometer integrators for independently controlling the velocity error...
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3968684 |
Apparatus and method for determining optimum direction of process of sailing vessels
Apparatus and a method for use in determining the optimum direction of progress of a sailing vessel from one point to a second point are described. The angle of leeway between the direction of...
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3967499 |
Measuring rate-of-turn on board of ships
A method and apparatus for measuring and displaying the rate-of-turn of a large ship while substantially eliminating response to rolling and pitching motions of the ship.
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3967799 |
Head up display and pitch generator
A collimated head up display of pitch related information for an aircraft operator. A generated pitch signal combines a gyroscope signal referenced to the airframe with an inertial signal...
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3960344 |
Precision mobile gravity survey and guidance system
A gravity survey and aircraft guidance system comprises a pendulum clock mounted in an aircraft in level flight, having a pendulum bob with a signal sender mounted thereon. A signal receiver...
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3958219 |
Terrain closure warning system with altitude rate signal conditioning
In an aircraft terrain warning system utilizing a radar altimeter wherein the rate of closure to the terrain is compared with the aircraft's altitude above the terrain to generate a warning signal...
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3955071 |
Windshear detection system
A system for processing signals representative of airspeed error and inertial longitudinal acceleration of an aircraft to provide an output signal representative of windshear induced acceleration...
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3949597 |
Gyroscopic device for locating the geodetic point of route
A device for determining the longitudinal and latitudinal position of a carrier includes a gyroscopic system having a cage on which three pairs of masses are supported for rotation about mutually...
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3948437 |
Automated pelorus system
A pelorus system for automatically providing an output display of the magnetic bearing of sighted objects. A pelorus sight is coupled to a shaft encoder which provides output pulses representative...
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3948096 |
Apparatus for computing the acceleration of an aircraft along its flight path
Apparatus for providing a measure of the acceleration of an aircraft along its flight path derived from computations involving inertial measurements of longitudinal and normal accelerations of the...
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3947808 |
Excessive descent rate warning system for aircraft
In a system that compares the rate of descent of an aircraft with its altitude above ground and generates a warning signal when the sink rate exceeds a predetermined limit for a particular...
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3947810 |
Negative climb rate after take-off warning system with predetermined loss of altitude inhibit
In a warning system for aircraft that generates a warning signal when the aircraft is descending during a take-off or missed approach phase of operation, the warning is inhibited for a...
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3944968 |
Aircraft ground proximity warning system having speed versus altitude compensation
The warning system includes a function generator for generating a signal representative of a minimum altitude over terrain as a function of the aircraft's speed. This signal is combined with a...
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3943764 |
Sailboat steering indicator system
An electrical signal in accordance with the direction of the wind relative to the heading of a sailboat is generated by means of a wind direction sensor and a transducer. This signal is fed to a...
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3941984 |
Satellite radio ranging velocity navigation
In an integrated satellite navigation system where satellite fixes periodically establish the position of a ship plying a course within the range of a chain of radio ranging stations, ship...
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3935828 |
Method and apparatus for obtaining maximum sail boat velocity
In a sailboat, signals representing relative wind speed and slot wind speed are differentially compared to obtain a signal that represents the increase in wind speed in the slot over the relative...
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3936798 |
Indicator display mechanism
A drive mechanism for positioning a moveable indicator in rotation about, and/or radial displacement with respect to, a fixed reference index. Dual dial cord drives are employed which are driven...
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3934222 |
Terrain closure warning system with climb inhibit and altitude gain measurement
In a terrain warning system wherein the rate of the aircraft's closure to the terrain is compared to the aircraft's altitude above the terrain in order to generate a warning signal for excessive...
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3924262 |
Aural warning apparatus
An aircraft aural warning device that provides a "beeping" tone when a fi selected angle-of-attack is exceeded by the aircraft. When a second selected angle-of-attack is exceeded, the "beeping"...
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3921941 |
Aircraft rate trim system
A method and apparatus are provided that enables a pilot of an aircraft to adjust, in a precise and smooth manner, various aircraft flight parameters while the aircraft is on a hold mode of an...
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3914584 |
Wave energy translator
Instrumentation is described for providing indication of the effects of sea onditions on a submerged submarine in a hovering maneuver at a selected depth. The instrumentation comprises analog...
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3899928 |
Attitude measurement system for satellite
In an earth satellite stabilized by rotation about a spin axis and travelling along an earth orbit, an attitude measurement apparatus comprising a slit sun sensor having its slit in a plane...
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3898886 |
Leg mounted distance measuring device and guidance system
The specification discloses a leg mounted distance measuring device comprising a mount adapted to be coupled to a person's leg. Following means is coupled to the mount for following at least...
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3895521 |
G-load measuring and indicator apparatus
A g-load measuring apparatus for facilitating pilot control of g-load dur maneuvering and to provide an indication of g-load constraint violations. The apparatus includes processing means for...
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3895528 |
Aircraft instrumentation displays
An aircraft instrumentation display comprises instruments one of which combines Pitot and Static pressures in a form which indicates aircraft total energy and can be used as an engine power...
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3881095 |
System for evaluating sailboat performance
A system for evaluating the performance of a sailing boat wherein average boat speed, average apparent wind speed and average apparent wind direction are sensed and are utilized to determine the...
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3881094 |
Signal for evaluating sailboat performance
A system for evaluating sailboat performance comprising averaging circuits for producing average boat speed, average apparent wind speed and average apparent wind direction. Instantaneous values of...
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