Abstract: In one embodiment, a method includes determining, by a controller, a first wind pressure associated with a first port of a first probe, determining, by the controller, a second wind pressure associated with a second port of the first probe, and determining, by the controller, a reference wind pressure associated with an end portion of the first probe. The method also includes calculating, by the controller, a first reference differential using the first wind pressure and the reference wind pressure, calculating, by the controller, a first rotational differential using the first wind pressure and the second wind pressure, and calculating, by the controller, an angular coefficient using the first reference differential and the first rotational differential. The method further includes calculating, by the controller, a wind velocity using the first reference differential and the angular coefficient. The wind velocity represents a wind velocity relative to a vehicle.

Abstract: A position sensing system and method for detecting the displacement of a door from a reference position, such as, for example, from a closed position. The system includes a magnetometer that may be operably connected to the door, and which measures positional location relative to a reference magnetic field, such as, for example, a magnetic field provided by a magnet of a lock device. The system may also include an accelerometer that detects acceleration of the door, and thereby provides an indication of when location is to be measured by the magnetometer. Measurement information from the magnetometer is used to derive a position indicator that is compared to a reference indicator, the reference indicator being associated with the reference position. Differences between the position and reference indicators may provide an indication that the door has been moved from the reference position.

Abstract: The present disclosure relates to the field of display technologies and provides a display panel and a display device, for lowering the risk of the force-sensing sensor being damaged by the electrostatic breakdown during the manufacture of the display panel. The display panel includes a force-sensing sensor and first to fourth input signal lines connected to the pressure-sensing sensor. At least one of the first input signal line, the second input signal line, the first output signal line and the second output signal line is a bridge. The bridge includes a first connection line connected to the force-sensing sensor and located in a first conduction layer, a second connection line located in a second conduction layer and connected to the first connection line through a first through-hole, a third connection line located in the first conduction layer and connected to the second connection line through a second through-hole.

Abstract: The invention provides an apparatus and method for measuring a property of a gas, such as the amount of liquid in a stream of the gas. The apparatus comprises a source of beta particles (20), a detector (23) capable of detecting beta particles, means (18) to support said source and said detector spaced apart from each other such that gas may enter the space between the source and detector and that the source is positioned to emit beta particles towards said detector; wherein said detector comprises a scintillation material in optical communication with a photodetector (26), and means (24) to physically isolate said photodetector from said gas.

Abstract: An adjustable height pressure sensing port arrangement is provided. In some example, the pressure sensing port may be arranged on an airfoil, such as wind turbine blade. The pressure sensing port arrangement may include a pressure sensing port body and a spring arranged within the port body. The pressure sensing port arrangement may further include a pressure sensing port arranged vertically above the spring and a rotatable capture disk arranged vertically above the port. The capture disk may be rotated to adjust a height of the capture disk. Further, the spring may be arranged to force an alignment feature of the pressure sensing port into an alignment feature on the rotatable capture disk in order to secure the port and capture disk in place.

Abstract: A device for adjusting a temperature and a humidity using a wind power is provided. The device includes an inlet; an outlet connected to the inlet; a sprayer spraying a nebulized liquid into the device; and an airflow sensor electrically connected to the sprayer for activating the sprayer when an airflow passes through.

Abstract: A portable electronic device includes a housing, a processor unit received in the housing, and an anemometer unit mounted on the housing and electrically connected to the processor unit. The anemometer unit transforms pressure of wind blowing thereon into electronic signals, and the processor unit receives and processes the electronic signals to obtain wind pressures and velocities.

Abstract: A duct-mountable sensing unit includes a plurality of sensors for detecting respective parameters, including pressure, of a fluid in a duct. The sensing unit enables fluid communication between the sensors and the fluid in the duct through a single insertion point in the duct.

Abstract: An air data system and method for a ducted fan air-vehicle is described. The air data system includes a plurality of air pressure sensors placed around a lip of an air duct of the ducted fan air-vehicle. The air data system calculates the speed and direction of airflow surrounding the ducted fan air-vehicle based on pressure data measured across the lip of the air duct. Additionally, the air data system may estimate forces generated by airflow surrounding the air-vehicle.

Abstract: A portable electronic device includes a housing, a processor unit received in the housing, and an anemometer unit mounted on the housing and electrically connected to the processor unit. The anemometer unit transforms pressure of wind blowing thereon into electronic signals, and the processor unit receives and processes the electronic signals to obtain wind pressures and velocities.

Abstract: A system and method for a pressure based load measurement system are provided. The system includes two pressure orifices arranged on a top surface and a bottom surface of an airfoil. The pressure differential between these two points is determined and an estimate of the aerodynamic load generated by the airfoil is determined from a linear correlation between pressure differential and load. The location of the orifices may be optimized using analytical or experimental techniques and a least squares empirical curve fit may be used to fit the data collected.

Abstract: The invention relates to a method of protecting aircraft in flight against clear air turbulence (CAT). Consider an aircraft occupying a position P and moving horizontally at a speed V, a plane PH0 being the horizontal plane passing through P. According to the invention, the method includes performing at least one pair of evaluations of air temperature TB, TC at two points B, C which have positions that are symmetrical relative to the plane PH0. At least one pair of horizontal air speed evaluations are performed VHB, VHC at the two points B, C; An air temperature gradient is determined; A horizontal air speed gradient is determined; An index signifying a presence of CAT is determined; The preceding steps are repeated; A trend is analyzed over time of the index.

Abstract: This device has a detection means to measure the relative amount of air movement in its vicinity. The detection means is coupled to a processing means for creating a variable trigger signal that is proportional to detected air movement. The detection means consists of a differential pressure transducer mounted inside a specially-shaped enclosure. The pressure transducer is arranged to measure the air pressure difference between two holes in the enclosure. The shape of the enclosure causes air to flow at different velocities near the holes, creating a differential air pressure. The processing means consists of a microprocessor that periodically samples the signal from the differential pressure transducer. A programmed algorithm calculates a variable trigger signal value based on a plurality of sampled signals. The processing means can also incorporate an algorithm for digitally generating audio signals that have attributes based on the value of the trigger signal.

Abstract: Wind indicator apparatus for indicating air flow comprising: a direction pointer, including a vane member, for providing a visible indication of air flow direction; pivoting means including a fixed portion for coupling to a sailing craft and a pivotable portion able to pivot with respect to said fixed portion and with which said direction pointer is entrained for movement therewith; and a counterbalance extending from said pivotable portion of said pivoting means and arranged to move therewith, the mass of the counterbalance being disposed so as to maintain the direction pointer in a substantially level position.

Abstract: A system for determining physical characteristics of an incident flow stream over a surface of a vehicle includes a plurality of acoustic sensors mounted to the surface and configured to sense pressure fluctuations caused by the incident flow stream. The plurality of acoustic sensors provide output signals indicative of the sensed pressure fluctuations. Processing circuitry coupled to the plurality of acoustic sensors, measures flow velocity in a first direction as a function of the output signals of at least two of the plurality of acoustic sensors, and measures flow velocity in a second direction as a function of the output signals of at least two of the plurality of acoustic sensors. The processing circuitry is configured to calculate an angular direction of flow as a function of the first and second measured flow velocities.

Abstract: A wind meter comprising a plurality of micro-electro-mechanical (MEM) differential pressure sensors positioned in a lobed housing, with an even number of circumferential ports arranged in an equally-spaced, circular pattern at the distal ends of the lobes of the housing, with tubes leading inward from the ports to the MEM sensors. The MEM sensors and other control system electronics are contained in the housing and are fully enclosed therein. The lobed housing structure does not impede or influence the movement of the wind as it passes and yet serves to prevent the ingress of moisture into the housing, thereby preventing fouling of the sensors. The tubular structures include an internal coating of hydrophobic material and are oriented at a slight angle from the horizontal in order to accomplish this protection. The openings at the ends of the tubular structures are positioned outside the fluid boundary layer.

Abstract: Apparatus and methods for airflow testing, especially for air testing of gas turbine components on an airflow test bench. Various embodiments of the present invention include the use of a measurement section downstream of the component being tested. The measurement section, in one embodiment, includes apparatus for measurement of gas properties at a plurality of spaced-apart radial locations and/or a plurality of spaced-apart circumferential locations. In another embodiment, the invention includes a method for testing a component including a comparison of gas properties measured in both forward and reverse flow directions.

Abstract: An apparatus for non-intrusively sensing fluid flow within a pipe is provided. The apparatus includes a first sensing array for sensing acoustic signals traveling at the speed of sound through fluid flow within the pipe, a second sensing array for sensing local pressure variations traveling with the fluid flow, and a housing attached to the pipe for enclosing the sensing arrays. The first sensing array includes a plurality of first optical pressure sensors and the second sensing array includes a plurality of second optical pressure sensors.

Abstract: A differential pressure-induced airflow based approach is used to measure Angle-Of-Attack (AOA) or Angle-Of-Sideslip (AOS) for an aircraft. Ports on opposing sides of an aircraft fuselage are coupled by an airway incorporating a mass airflow sensor. As the relative wind's angle of incidence changes direction with respect to the aircraft's longitudinal axis or wing chord, a differential pressure is created. The differential pressure induces an airflow between the ports whose magnitude is measured by a mass airflow sensor. The resulting airflow is a function of the respective AOA or AOS. The measured airflow and air data computer supplied parameters of airspeed (or dynamic pressure) and altitude (or static pressure) are utilized by an algorithm that reduces the data into angular AOA or AOS measurements.

Abstract: An elongate probe suitable for measuring one or more properties of a stream of fluid, the probe having an external planar sensing surface, which in use is exposed to the stream of fluid, at a longitudinal end thereof and comprising a plurality of sensors at the planar external sensing surface.

Abstract: Air device for measuring flight conditions for flight vehicles has a probe carrier that is arranged on a structural part of the flight vehicle and is rotationally symmetrical at least at a transition boundary. The probe carrier is rotatable about its longitudinal axis and is disposed on the structural part of the flight vehicle via a bearing, and its mass, is balanced about its longitudinal axis. The angle of rotation of the probe is measurable by way of a measuring sensor. At least two strakes are arranged on the probe symmetrically with respect to the plane of symmetry of the probe, so that the yaw angle &bgr;S of the probe is minimized at every oncoming flow condition. At least three pressure measuring bores are provided on the probe surface for detecting differential and absolute pressures via differential pressure sensors assigned to them.

Abstract: Airspeed direct sensing transducer apparatus in a system where fast response gust sensors are aircraft wing mounted, each gust sensor mounted on opposite wing halves feeding the absolute value of low-pass filtered direct sensed airstream gust cross-component signals to a difference amplifier providing an electrical indication when one side of the aircraft “sees” disturbed or turbulent air as may be encountered when an aircraft trailing wake-vortex or similar hazardous atmospheric disturbance is approached. This enables the pilot to take evasive action to mitigate or avoid the turbulence disturbance, enhancing free flight aircraft operation.

Abstract: A system for measuring wind direction and velocity utilizing a sphere which is capable of making differential orthogonal pressure measurements, using pressure sensors located inside the sphere along apertures forming orthogonal axes of the sphere. The preferred embodiment applies the Bernoulli principle to the sphere which has the apertures disposed along the orthogonal axes, and which measures the wind velocity and direction, whereas an alternative embodiment applies the Reynold's principle by using a sphere having no apertures therein, and resulting in a more robust meteorological measurement device which can also measure other meteorological data which is combined with the wind data to produce forecasting of air and weather patterns in a localized area.