FLIR Flashcards
FLIR
Forward Looking Infrared - Uses thermal (IR) detectors to detect Radio Frequency (RF) heat energy, measuring the temperature differences between objects and their environment to display a black and white heat signature.
3 atmospheric molecules that most affect FLIR performance
- Water2. Carbon Dioxide3. Ozone
Conditions that hinder FLIR’s operational capabilities
High humidity, clouds, dust, and smoke
Most important environmental factor affecting FLIR’s performance
The atmosphere, because it can reduce thermal energy, thereby weakening the level of energy that reaches the FLIR
Anti-Icing for the FLIR
IR window has anti-icing controlled automatically by the MC
SEU (System Electronics Unit)
Converts electrical signals from the Turreted FLIR Unit into television video and routes it to the MFDs
Function of the Display Electronics Units (DEU) in the FLIR System
Receive FLIR video signals from the SEU and condition them for the MFD display
What happens when a DEU fails
The MFDs on the failed side mirror the MFDs on the good side
Normal cool down period of the FLIR, and what advisory is associated
7-10 minutes, will receive a FLIR VIDEO READY alert once this has occurred
GAIN Key on the FLIR CDU Entry Control Layer
Controls the contrast of detected thermal signals displayed on the MFD. A high level increases the ability to detect small differences in temperature in high temperature environments, and increases the intensity of bright objects relative to dark objects
FF ELEV Key on the FLIR CDU Entry Control Layer
Edits/displays the FLIR Fixed Forward Elevation angle preset from +5 to -90 degrees, the default is -5 degrees.
FOV Switch on the Track Handle
Field of View - Toggles through 3 FOVs: Narrow, Medium, and Wide
Field of Regard
Turret’s rotational limits
Field of Regard Ranges
+/-210 degrees for azimuth+40 degrees and -140 degrees for elevation (wide and medium FOV)+15 degrees and -140 degrees for elevation (narrow FOV)
Field of View
Instantaneous angular size of the total display scene
Narrow FOV
5 degrees horizontal and vertical rangesslow turret slew rate
Medium FOV
30 degrees horizontal and vertical rangesfast turret slew rate
Wide FOV
40 degrees horizontal and 30 degrees vertical ranges fast turret slew rate
POL button on the track handle
Polarity - Allow toggling between white hot and black hot
MAN Button on the track handle
Manual - Allows toggling between the selected mode and Manual mode, allowing the use of the SLEW switch
LACE Switch on the Track Handle
Local Area Contrast Enhancement - Increases contrast within the selected area when the switch is ON. Pushing the switch forward toggles between ON and OFF, and pushing it backward adjusts viewing sizes between Small, Medium and Large
FPV Mode of FLIR
Flight Path Vector - Automatically slews FLIR pointing angle to the flight path direction , providing a visual indication of impact.
How can FPV mode be used during landing
Used to set a glideslope to the intended point of landing by placing the FPV on the intended point of landing
How can the FPV mode be useful during forward flight
In mountainous areas, by placing the FPV above the terrain normally assures ground clearance