A system and method for automatically estimating a speed of an aircraft during a flight of the aircraft includes a determining module to determine at least one quantity which is representative of a force exerted on at least one control surface of the aircraft, a calculating module to calculate at least one speed of the aircraft and a transmitting module to transmit the one or more speeds of the aircraft which are calculated by the calculating module to a user device. The system makes it possible to estimate a speed of the aircraft without having to use the total pressure.

To simplify architecture of a measurement device for affixing to a wall of a moving object or stationary object located in a flow, a device includes a support having compartments with an opening that opens to the exterior of the support at the free face in which sensors are housed, the support having a free face and a face to come into contact with the wall, the free face being opposite the face. The device includes a cavity with a printed circuit board, the compartments including an opening that opens to the exterior of the support in the cavity. The cavity is made in the free face opening into it. The circuit board is upside down in the cavity with the printed face towards the interior of the support. The sensors attached to the circuit board are suspended in the compartments. The unprinted face affords an aerodynamic smooth and planar surface.

To simplify architecture of a measurement device for affixing to a wall of a moving object or stationary object located in a flow, a device includes a support having compartments with an opening that opens to the exterior of the support at the free face in which sensors are housed, the support having a free face and a face to come into contact with the wall, the free face being opposite the face. The device includes a cavity with a printed circuit board, the compartments including an opening that opens to the exterior of the support in the cavity. The cavity is made in the free face opening into it. The circuit board is upside down in the cavity with the printed face towards the interior of the support. The sensors attached to the circuit board are suspended in the compartments. The unprinted face affords an aerodynamic smooth and planar surface.

Apparatus and associated methods relate to predicting failure and/or estimating remaining useful life of an air-data-probe heater. Failure is predicted or useful life is estimated based on an electrical metric of the electrical operating power provided to a resistive heating element of the air-data-probe heater. The electrical metric of the air data probe heater is one or more of: i) phase relation between voltage across the resistive heating element and leakage current, which is conducted from the resistive heating element to a conductive sheath surrounding the resistive heating element; ii) a time-domain profile of leakage current through the heating element insulation during a full power cycle; and/or iii) high-frequency components of the electrical current conducted by the resistive heating element and/or the voltage across the resistive heating element.

An air sensor system including a pressure or airflow sensor, a filter housing that defines an air flow path to the air pressure sensor, and a filter in the air flow path. The filter includes a micro filter and a hydrophobic membrane. The hydrophobic membrane is downstream of the micro filter in the air flow path to the pressure or airflow sensor.

An air sensor system including a pressure or airflow sensor, a filter housing that defines an air flow path to the air pressure sensor, and a filter in the air flow path. The filter includes a micro filter and a hydrophobic membrane. The hydrophobic membrane is downstream of the micro filter in the air flow path to the pressure or airflow sensor.

In one embodiment, a system includes a vehicle, one or more probes coupled to the vehicle, and a controller. The vehicle is operable to traverse a distance. The one or more probes are operable to measure wind pressure and generate one or more wind pressure measurements. The controller is operable to receive the one or more wind pressure measurements from the one or more probes, determine a wind angle relative to the vehicle using the one or more wind pressure measurements, and determine a wind speed relative to the vehicle using the one or more wind pressure measurements and the wind angle.

Apparatuses, systems, and methods are provided for measuring the velocity and direction of a fluid flow. In some instances, a measuring system may include a housing capable of holding one or more pressure sensors in a desired location and orientation. The housing may include a cavity for each of the one or more pressure sensors and each cavity may have a connection to an opening at the outside surface of housing. Each opening may be able to face in any desired direction such that the pressure at any desired location on the outside surface of housing, which may be capable of facing in any desired direction, may extend to the cavity inside housing where it can be measured by a pressure sensor. The velocity and the direction of a fluid flow around the housing of the measurement system may be based on pressure readings generated by the pressure sensors.

A method for testing movement speed includes, but is not limited to: measuring a static pressure P.sub.0 of an inner cavity of a pressure hole of a mobile device (S100); aligning the pressure hole to a wind direction and measuring a total pressure P of the wind in a static state (S101); aligning the pressure hole to the wind direction in a moving process, and measuring a pressure P.sub.m of the inner cavity of the pressure hole in a movement direction (S102); obtaining a current wind speed v.sub.f according to a correspondence relationship between a wind speed v.sub.f and a dynamic pressure P-P.sub.0; and obtaining a current relative movement speed v.sub.r according to a correspondence relationship between a relative movement speed v.sub.r and a pressure difference P.sub.m-P.sub.0 (S103); and obtaining a current movement speed v according to the current relative movement speed v.sub.r and the current wind speed v.sub.f (S104).

Disclosed is a method and device for testing wind speed. The method includes, but is not limited to: measuring a static pressure P.sub.0 of an inner cavity of a pressure hole of a mobile device (S100), wherein the pressure hole being in communication with the outside; aligning the pressure hole to a wind direction and acquiring a total pressure P of the wind (S101); and acquiring a current wind speed according to a corresponding relational expression between a wind speed v and a dynamic pressure P−P.sub.0 (S102). The device includes, but is not limited to, a pressure sensor and a wind speed acquiring unit. The technical solution acquires the current wind speed according to a correspondence between wind speeds and dynamic pressures of wind, may effectively improve the precision of the wind speed testing, and does not cause damage to relevant parts of the mobile device.