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] |