Attention:

Find detailed descriptions of nose boom sensors in chapter "Atmospheric measurements"!

Summary

Two nose booms exist for measurements of turbulence in the air column. The nose booms are attached to the nose pylons of Polar 5 or Polar 6. They comprise a 5-hole probe at the tip of the nose boom. Three holes are connected to differential pressure sensors and 2 holes serve static pressure sensors. Furthermore the nose booms comprise 2 temperature sensors with one de-iced housing and one not de-iced housing. Another air inlet is connected to a humidity sensor (see sensor specifications in chapter "Atmospheric measurements").



Specifications

Each nose boom including all sensors, cables and housings amounts to ~20 kg. The length measured from the tip of the aircraft is about 3m. Sensors are supplied with 28 VDC. Housings are de-iced with 115 VAC.

Data logging, storage and archiving

Data of all the nose boom sensors are stored within the aircraft onboard Data Management System (DMS)  and are avaible after the flight from land instance of DMS.

DMS

Module name

B719 Turbulence Noseboom 1, B851 Turbulence Noseboom 2

Static Pressure Fast

ErrorText; Static Pressure Fast Raw [V]; Status

Dynamic Pressure

Dynamic Pressure Raw [V]; ErrorText; Status

Dynamic Pressure Alpha

ErrorText; Status; Differential Pressure Alpha Raw [V]

Dynamic Pressure Beta

ErrorText; Status; Differential Pressure Beta Raw [V]

Static Pressure Slow

ErrorText; Static Pressure Slow; Status

Total Air Temperature Deiced

ErrorText; Status; Total Air Temperature Deiced Raw [Ohm]

Total Air Temperature

ErrorText; Status; Total Air Temperature Raw [Ohm]

Humicap

ErrorText; Relative Humidity Raw [A]; Status; Temperature raw [A]


Documentation

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