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7136777 |
Coriolis mass flowmeter and method for operating a coriolis mass flowmeter
A Coriolis mass flowmeter incorporates at least one measuring tube, at least one oscillator for the excitation of the measuring tube and at least one oscillation detector for registering the...
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7055383 |
Gear position detection system for a transmission
A gear position detecting system includes structure which facilitates mounting of the system, and minimizes direct contact of other objects with the system. The outer circumferential surface of a...
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6955082 |
Redundant system for the indication of heading and attitude in an aircraft
A method for synthetically calculating redundant attitude and redundant heading for an aircraft using data existing in the aircraft, including angular rates p, q, r around x-, y- and z-coordinates...
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6439048 |
In-flight calibration of air data systems using a nose-mask sensor
A nose cone overlay for determining air data quantities. The overlay is adapted for removable mounting to a conventional radome or nose cone of a typical aircraft. The overlay includes transducers...
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6308581 |
Differential pressure flow sensor
The fluid flow meter of the present invention includes a ramp inclined to the surface of a vessel so as to form a recess in the surface. A dynamic port surface extends from the lower end of the...
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6278913 |
Automated flight data management system
A data processing system for automating the process of managing flight data and generating reports based on that data. The system accesses flight data transmitted on an airborne databus, where the...
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5838635 |
Thin speed transducer sensor
A speed sensor for a ship, more particularly, a thin speed sensor which can be mounted in the hull of the ship and remain flush with the outer surface of the hull. The transducer assembly for the...
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5747700 |
Portable electronic flow meter
A flow meter for use in scuba diving is disclosed. The device has a coil or, alternatively, two coils separated by a predetermined distance and sensors for measuring induced electromotive force....
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5648604 |
Method and system for determining anemobaroclinometric parameters on board an aircraft
The invention is a method for determining anemobaroclinometric parameters on board an aircraft. The air speed vector (Vp), the static pressure (Ps), and the impact temperature (Ti) are measured,...
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5585557 |
Air data system for measuring fluid flow direction and velocity
The invention is a system for determining the physical characteristics of an incident fluid flow stream over a surface of a vehicle relative to an axis thereof, the apparatus. In detail, the...
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5544076 |
Marine speedometer
A marine speedometer system is disclosed which utilizes a short pitot tube or air column. The speedometer system includes an inlet having a short air column, a transducer, a control circuit, and a...
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5357794 |
Faraday effect small boat speed transducer and waterproof connection for same
An improved speed transducer is disclosed. The present invention provides an alternating current coil speed transducer which utilizes the Faraday Effect to generate a voltage. The present invention...
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5299455 |
Method and instrumentation system for measuring airspeed and flow angle
An instrumentation system for measuring airspeed and angle-of-attack (AOA) is provided. The system includes a sensor assembly, a constant voltage anemometer, a microprocessor assembly with...
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5063777 |
Method and device for determining the speed of a helicopter with respect to the air
A method and device are disclosed for determining the airspeed of a helicoper, in which, for a plurality of flight configurations of a calibration flight, magnitudes for estimating the airspeed and...
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5007286 |
Solid-state transducer based dynamic fluid flow sensing system
A dynamic fluid flow sensing system measures relative fluid velocity with respect to a reference member. The system includes a sensor housing supported from the reference member such that the...
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5003820 |
Electronic speedometer for snow skis
The electronic speedometer of this invention accurately calculates and digitally displays a skier's instantaneous speed. The device accomplishes this task by employing the "hot wire" principle...
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4896534 |
Float-type flowmeter
A float-type flowmeter has a flow detecting surface, such as a fin, for pointing its inlet opening, which receives a portion of the flow to be measured, into the flow. Preferably the flowmeter, its...
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4848146 |
Underwater electromagnetic tubulent velocimeter
A velocimeter, comprising a controlled magnetic field source and electric field sensors, the device being flush mounted in a vessel hull. The magnetic source comprises a drive coil which may be...
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4794793 |
Method and apparatus for measuring the airspeed of a helicopter at low speed
A helicopter is provided with a lift rotor (Ros), a tail rotor (Rac), first control means for the longitudinal (Pcx) and lateral (Pcy) cyclic pitch of the lift rotor and second control means for...
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4774837 |
Transducer assembly for a speed measurement device
A transducer assembly for a speed measurement device for measuring the speed of a marine vehicle through the water is disclosed. The device comprises a transmitter circuit and a receiver circuit...
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4766767 |
Method for determining the horizontal airspeed of helicopters in higher speed ranges
A method for determining the horizontal airspeed of a helicopter in the high speed (v e >20 m/s) range. Pitch angle and the longitudinal control signals are recorded by sensors such as an...
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4653319 |
Speed indicating means
A Faraday transducer for a marine speed indicator is sealed in a cylindrical housing so that it can be mounted in a boat hull with its base flush with the hull. A horseshoe magnet sealed within the...
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4576476 |
Method and system for accurately measuring speed of a ship relative to a body of water
A method and system for measuring relative speed of a ship through a body of water with improved accuracy and simplicity. It employs a free floating buoy and a pair of tracking scopes. The buoy is...
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4570492 |
Electrochemical flowmeter
A device for measuring the velocity of flow of a liquid comprises electrodes over which the liquid flows. A chemical emitting electrode is mounted so as to contact the liquid at a first point and...
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4524615 |
Method and system for measuring the speed of a ship
A single scope method or system for accurate ship speed measurement relative to the water through which it is propelled. There is a free floating buoy beside the ship, and a tracking scope is...
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4472966 |
Marine speed log
A marine speed log for providing an indication of the relative velocity of a vessel through water and an indication of the forward or reverse direction of travel. An output indication of total...
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4409827 |
Combined marine instrument and display therefor
A combined knotmeter, distance/log meter and depth meter including a meter housing, a dial face having indicia symmetrically centered thereabout, an analog speed indicator having a pointer for...
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4261210 |
Stacked wafer helical flowmeter
An electrical flowmeter having signal electrodes laterally spaced along a line perpendicular to fluid flow and sensitive to a voltage field set up in the fluid by a magnetic field is provided with...
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4170133 |
Planar helical flowmeter
An electrical flowmeter having signal electrodes laterally spaced along a line perpendicular to fluid flow and sensitive to a voltage field set up in the fluid by a magnetic field is provided with...
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4143548 |
Measuring the speed of an aircraft
A continuous wave ultrasonic wave transmitter transmits modulated waves in two opposite directions being intercepted by a forward receiver and an aft receiver. The received signals are demodulated...
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4131013 |
Ionic air speed indicator
The invention relates generally to measuring the air speed of an object moving within the earth's atmosphere. In particular, the invention provides apparatus which comprises means for causing an...
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4112756 |
Ultrasonic air data system
The ultrasonic air data system determines the relative velocity of an aircraft with respect to the medium in one, two or three directions. In addition, it may determine the speed of sound and the...
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4079626 |
Electromagnetic flow meter
An electromagnetic flow meter construction for substantially flush mounting within a surface past which a fluid is to flow. A pair of spaced electrodes in contact with the fluid are mounted along a...
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4038870 |
Air movement measuring apparatus
An ultrasonic air movement vector and magnitude sensing apparatus using a three element ultrasonic probe and temperature sensor in combination with an electronic computational circuit to produce...
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4000647 |
Heating device for flow sondes
This invention relates to an improvement in a flow sonde, particularly for measuring aerodynamic values in aircraft such as the total pressure, the static pressure and the total temperature. The...
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RE28989 |
Electromagnetic water current meter
A body means of electrically non-conductive material supports at least one pair of electrically conductive detecting electrodes disposed at opposite portions of the body means. Means is supported...
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3940983 |
Faraday effect fluid flow and direction indicator
A pair of concentric electrodes are mounted at one end of a housing fixedly supported on a body and positioned in a fluid, the flow of which is to be measured relative to the body. A permanent...
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3924465 |
Ship navigation equipment
A method and apparatus for ship navigation information display system is disclosed including continuous sensing of at least two of the following parameters: the ship's speed relative to the water,...
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3903741 |
Water speed indicating instrument
In a preferred embodiment, a fluid-flow velocity detector comprising a "Faraday transducer" arrangement adapted to be attached to the underside of a vessel hull (especially as placed within a skeg...
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3898881 |
Apparatus for measuring the velocity of flow of an electrically conductive fluid
An electromagnetic velocity meter in which an electrical signal is generated in response to relative motion between the velocity meter and a conductive fluid in a magnetic field generated by means...
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3898878 |
Ship speed indicator
A device for measuring the speed of a ship in a medium which includes two oustic projector-receiver units mounted at two points on the bottom of the ship and a logic module conveniently located...
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3855858 |
SELF SYNCHRONOUS NOISE REJECTION CIRCUIT FOR FLUID VELOCITY METER
A noise rejection circuit for use with electromagnetic fluid flow meters. An electromagnetic fluid flow meter with an electromagnet to induce a magnetic flux of periodically changing polarity....
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3824853 |
AIRCRAFT INSTRUMENT SHROUD
The angle of attack effects on the primary sensing element of an aircraft altitude/airspeed measuring instrument are minimized and controlled by means of a shroud device having a particular inlet...
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3824577 |
ACCELERATION AND DECELERATION SENSING AND INDICATING SYSTEM FOR BOATS AND THE LIKE VESSELS
An acceleration and deceleration sensing and indicating system is provided to indicate changes in speed of a boat and the like vessel. Acceleration and deceleration of the boat are sensed and...
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3782193 |
FLOWMETER APPARATUS
Three posts mounted on the underside of a ship transmit acoustic signals to and from one another for computation of ship's speed. The posts are streamlined for traveling through the water and each...
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3777561 |
FARADAY EFFECT SPEEDOMETER
A speedometer employing the Faraday Effect principle which includes a magnet having two sets of alternating north and south poles disposed in a housing and adapted for rotation therein to provide...
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3751979 |
SPEED MEASUREMENT SYSTEM
A speed measurement system utilizing a plurality of radiators coupled to a medium for transmitting radiant energy signals within the medium between the radiators in a manner wherein the frequency...
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3746985 |
COMBINED DIGITAL DISPLAY SPEEDOMETER AND LOG
A combined log and speedometer having a digital readout is provided wherein an electronic speed sensor actuates a voltage controlled oscillator so that the frequency of the oscillator is...
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3739638 |
AIRSPEED AND ALTITUDE MEASURING DEVICE
The airspeed of an airplane is determined by means of a device which includes an upstream cylindrical member and a downstream disc-like member spaced from said cylindrical member by a predetermined...
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3735635 |
TRUE AIRSPEED MEASURING APPARATUS
Apparatus relying on the adiabatic temperature rise due to stopping a moving stream of air for determining the velocity of that air. Temperature sensors are mounted at opposite ends of a rotating...
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