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Basissensorik Falcon 20
Datenerfassung
The data acquisition system can store up to 130 different channels including analog data from the meteorological sensors and ARINC 429 data from the avionics. Additional user data can also be stored on this system. The standard data acquisition frequency is 10 Hz, data used for turbulence investigations are sampled with 100Hz.
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Position, Geschwindigkeit und Lage des Flugzeuges
The Honeywell Laserref Innertial Reference System (IRS) uses ring laser gyros and servo accelerometers to measure horizontal, vertical and angular acceleration in the Cartesian aircraft reference system. The IRS internal computer determines aircraft position, attitude and velocity from the measured accelerations using advanced Kalmann filtering techniques to reduce drift errors from signal integration.
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Statischer und dynamischer Druck
Rosemount Model 1501 Digital Pressure Transducer - Noseboom, Rosemount Model 1201F2 Pressure Transducer - Noseboom, Rosemount Model 1221F2 - Noseboom
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Temperatur
Two deiced Rosemount Total Air Temperature (TAT) sensor housings BW102 are used for temperature measurement. As sensing elements a fast open wire PT100 element and a slow encapsulated PT100 element are placed inside the housings. The principal of operation is the measurement of the temperature dependent resistance of a platinum wire.
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Strömungssonde
A Rosemount 858 flow angle sensor is used to measure the 3-D airflow. The principal of operation is sensing differential pressures across horizontally and vertically aligned ports positioned on a hemispherical head. At zero angle of attack/sideslip all ports sense equal pressures. As the aircraft rotates to a positive angle of attack/sideslip a differential pressure is sensed across the vetical/horizontal pressure port.
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Taupunkt und Feuchte
For water vapor measurements three different instruments are used: a commercial aircraft dew point hygrometer (GE 1011B, General Eastern), a slightly modified capacitive sensor (Humicap-H ,Vaisala) and a Lyman-alpha absorption instrument (Buck Research, Boulder). The General Eastern 1011B is a dew/frost point hygrometer developed for aircraft application.
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Remote Sensing (optional)
The Heitronics Model KT19.85 is used to remotely measure surface or cloud top temperature in the range of –50 to 200 °C. The principal of operation is the pyroelectric detection of infrared radiation emitted by the earth referenced to an internal black body source. The spectral range of the detector is 9.6 to 11.5 µm.
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Strahlung (optional)
Pyranometer Type Eppley (up/down), Pyrgeometer Type Eppley (up/down), Pyrgeometer Type DLR (up/down)
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Datenauswertung
RAMSES (Research Aircraft Meteorological Sensor data Evaluation Software) is a universal data processing software for the calculation and visualisation of meteorological aircraft data. The software was developed at DLR Flight Facility and is based on IDL (Research Systems Inc.), a platform independent interactive programming language.
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