HUD: "obstacle"
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source:
Never saw this message in BMS.
Is it implemented?
If so: When does it show? Is it the same as the ‘terrain’ message when using TFR or something else? -
Not implemented in BMS that I’m aware of. The message and turn guidance (the arrow pointing right) are part of the ACAT avionics suite which also includes an automated terrain fly-up to prevent CFIT. It behaves similarly to TFR with the LANTIRN pod but doesn’t provide the “following” part, just the fly-up part. It also doesn’t require any special external pods or stores. IIRC all the Vipers that were at Hill in 05-06 received the package which in turn ended up scattered across the country. I’m not sure who else got the upgrades.
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I thing they’re using chevrons in CRM HUD.
ck 1:40
Maybe related video.
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Yes it is…. is link to the TFR.
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This is the Digital Terrain System (DTS) and Predictive Ground Collision Avoidance System (PGCAS)
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In BMS you can get obstacle warning on HUD when TFR is operating.
The right arrow means that there is obstacle to the right.
AFAIK it has nothing to do with DTS in BMS. I am not sure about real life. AFAIK in BMS DTS is not modelled but you can get such warnings when using TFR. -
In BMS you can get obstacle warning on HUD when TFR is operating.
The right arrow means that there is obstacle to the right.No. You get a TERRAIN caution.
@macieksoft:AFAIK it has nothing to do with DTS in BMS. I am not sure about real life. AFAIK in BMS DTS is not modelled but you can get such warnings when using TFR.
The TFR has no OBSTACLE HUD warning. It has a turn caution that provides right and left turn advisories when terrain to the right or left of the aircraft will cause a command greater than 2.0g G. In this case, the HUD will display TERRAIN
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@Tronald:
source:
Never saw this message in BMS.
Is it implemented?
If so: When does it show? Is it the same as the ‘terrain’ message when using TFR or something else?Digital Terrain System (DTS)
The DTS is a digital representation of 480 NM^2 of terrain loaded into the data tape cartridge (DTC). The F-16 uses this digital terrain for a number of different things:
Database terrain cueing (DBTC): With the radar altimeter on, the actual terrain the F-16 is flying over is compared against the database to determine position on the digital terrain. This information is combined with the INS and GPS and used in position fixing. When flying in an area without DTS coverage, the words “OFF MAP” appear below the ASI on the HUD.
Proximity to ground collision avoidance system (PGCAS): Without the DTS, the airplane assumes a “flat earth” for the PULL-UP cues (in other words; it’s only effective if flying over the ocean or perfectly flat land). With the DTS, the jet can give accurate PULL-UP cues over mountainous terrain. To differentiate between cues given by the existing ground-proximity warning system and PGCAS, a separate terrain-proximity warning (along with the break-X on the HUD) will appear below the ASI. If PGCAS is not available, a “NO GPW” warning is displayed on the HUD.
Obstacle warning/clearance (OW/C): Along with a terrain database, the DTS includes information on man-made obstacles (height and position). The HUD will display “OBSTACLE” when nearing an obstacle, and “<- OBSTACLE” or “OBSTACLE ->” when one is to the left or right of the aircraft.
The DTS is configured from the DTS page on the DED, ICP button 3. From this page you can turn on and off different DTC features and configure minimum altitudes.
some more DATA for PGCAS …