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An air data boom provides air pressure, temperature, and airflow direction data to data acquisition systems for the computation of air, ground, and water vehicle orientation, speed, altitude/depth, and related information. Air data booms can be used as primary sensors or as a "measurement standard" of which primary sensors and instruments are compared to.
SpaceAge Control
/ref> Goodrich,, or created by vehicle manufacturers, R&D facilities, and test organizations.
Airdata Measurement and Calibration
Calibration of Air Data Systems and Flow Direction Sensors
Wind-Tunnel Calibration of a Combined Pitot-Static Tube and Vane-Type Flow-Angularity Indicator at Mach Numbers of 1.61 and 2.01
{{Notelist-lr Aircraft components Sensors
An air data boom provides air pressure, temperature, and airflow direction data to data acquisition systems for the computation of air, ground, and water vehicle orientation, speed, altitude/depth, and related information. Air data booms can be used as primary sensors or as a "measurement standard" of which primary sensors and instruments are compared to.
Purpose and overview
An air data boom is used to collect source data during the testing of air vehicles, ground vehicles, and water-borne vessels. The air data boom is mounted on the vehicle in a location that allows for relatively undisturbed air to be measured. To attain such undisturbed air, mounting is usually done on the nose, wing, or upper horizontal stabilizer of the vehicle.
Typical components
Air data booms may measure one, some, or all of these capabilities: *angle of attack
In fluid dynamics, angle of attack (AOA, α, or \alpha) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is ...
(AoA, alpha)
* angle of sideslip (AoS, beta)
* static pressure
In fluid mechanics the term static pressure has several uses:
* In the design and operation of aircraft, ''static pressure'' is the air pressure in the aircraft's static pressure system.
* In fluid dynamics, many authors use the term ''static pres ...
(Ps)
* total pressure In physics, the term total pressure may indicate two different quantities, both having the dimensions of a pressure:
For compressible flow the isentropic relations can be used (also valid for incompressible flow):
: p_t=p\left(1+\fracM^2\right)^ ...
(Pt, pitot pressure)
* outside air temperature
In aviation terminology, the outside air temperature (OAT) or static air temperature (SAT) refers to the temperature of the air around an aircraft, but unaffected by the passage of the aircraft through it.http://www.airweb.faa.gov/Regulatory_and_G ...
(OAT)
* total air temperature (TAT)
Specialized air data booms may also contain mission-specific sensors such as humidity sensors, ice detectors, accelerometers, strain gages, and the like.
Synonyms
An air data boom may be referred to by a variety of names, including: * flight test boom * vehicle test boom * nose boom * wing boom * YAPS head (for Yaw-And-Pitch Sensor head)Manufacturers
Most air data booms are either procured from niche manufacturers such as SpaceAge Control,/ref> Goodrich,, or created by vehicle manufacturers, R&D facilities, and test organizations.
See also
*Flight test
Flight testing is a branch of aeronautical engineering that develops specialist equipment required for testing aircraft behaviour and systems. Instrumentation systems are developed using proprietary transducers and data acquisition systems. D ...
* Flight test instrumentation
* Angle of attack
In fluid dynamics, angle of attack (AOA, α, or \alpha) is the angle between a reference line on a body (often the chord line of an airfoil) and the vector representing the relative motion between the body and the fluid through which it is ...
* Pitot-static system
A pitot-static system is a system of pressure-sensitive instruments that is most often used in aviation to determine an aircraft's airspeed, Mach number, altitude, and altitude trend. A pitot-static system generally consists of a pitot tube, a ...
* Pitot tube
A pitot ( ) tube (pitot probe) measures fluid flow velocity. It was invented by a French engineer, Henri Pitot, in the early 18th century, and was modified to its modern form in the mid-19th century by a French scientist, Henry Darcy. It ...
* Total air temperature
References
Airdata Measurement and Calibration
Calibration of Air Data Systems and Flow Direction Sensors
Wind-Tunnel Calibration of a Combined Pitot-Static Tube and Vane-Type Flow-Angularity Indicator at Mach Numbers of 1.61 and 2.01
{{Notelist-lr Aircraft components Sensors