Warn alt entry via A/P PB x2

[Hulkbust44]

Hello all,

 

I was watching this video and noticed a peculiar UFC entry with this Hornet.

 

 

Starting at 4:16 you hear betty call "altitude....altitude" then immediately the pilot press A/P twice and enters 190 into the scratch pad. With this information it appears that he is setting a new baro warning altitude by double pressing the A/P UFC option.

 

I would like to see this included with the DCS Hornet if it is relevant to our OFP. We have more or less a frankenstein's monster of OFPs up to 20X in DCS as far as I can tell.

 

By my logic there is no way that this isn't what the pilot did. I would love to have someone correct me if I'm wrong.

 

Mobius708

 

 

[Swift.]

You're not wrong.

 

ED if curious, ask your SMEs about this

[Ahmed]

That's indeed a second low altitude warning, independent from the one set via the radioaltimeter dial.

[BarTzi]

38 minutes ago, Ahmed said:

That's indeed a second low altitude warning, independent from the one set via the radioaltimeter dial.

 

Isn't it just another way of setting the RALT warning, and not a completely new independent warning?

Edited August 7, 2021 by BarTzi

[IvanK]

As I understand it IRL when the RADALT warning goes off the top option window of the UFC shows :RALT, you can silence he warning by de-colonising the RALT option, when you do that the RALT legend extinguishes. So just a quick way to kill the warning.

[Hulkbust44]

As I understand it IRL when the RADALT warning goes off the top option window of the UFC shows :RALT, you can silence he warning by de-colonising the RALT option, when you do that the RALT legend extinguishes. So just a quick way to kill the warning.

Yes, but here he entered a value after cuing something with A/P PBx2.

Mobius708

[Ahmed]

9 hours ago, BarTzi said:

 

Isn't it just another way of setting the RALT warning, and not a completely new independent warning?

 

Now you are making me doubt. It may override the one set via the dial bug instead of being an independent one. I may have misunderstood it.

[Hulkbust44]

Now you are making me doubt. It may override the one set via the dial bug instead of being an independent one. I may have misunderstood it.

The actual instrument is a separate display system afaik. You will always have it's bug to the altitude you left it, but you can set a system RALT warn via HSI-DATA-A/C-RADAR. Or we should be able to set it as shown above.

Mobius708

[Bunny Clark]

13 hours ago, BarTzi said:

Isn't it just another way of setting the RALT warning, and not a completely new independent warning?

There are two completely different altitude warning systems in the Hornet. 

 

There is the Warning Altitude, which can be set from the HSI DATA A/C subpage, and includes a separate barometric and radar warning altitude. That defaults to 5,000 feet baro and 0 feet (disabled) for radar. It will produce an "Altitude, Altitude" warning once when descending through it. 

 

The Radar Altimeter is set by the dial on the right knee panel, and it produces a "whoop whoop" for as long as you are below the bugged altitude. When the Radar Altimeter warning is active, the tone can be disabled from the UFC.

 

It's hard to be sure, but it seems like the video may show a faster way to set the Warning Altitude. If so, this procedure is not documented in the version of NATOPS I have. It's also not clear if this only sets the baro warning, or if there may be some way to set either baro or radar. 

[Ahmed]

Yes, primary radar low altitude warning is the one set via the radio altimeter ("whoop whoop" tone), secondary radar low altitude warning is the one in HSI A/C ("altitude altitude"). Double A/P is for the primary one. Whether it is a second independent setting, or just overrides the radio altimeter bug, I don't know.

[Swift.]

From what I have gathered, its independent. You have 4 altitude Alerts:

 

HSI>AC>RALT - 'Altitude Altitude'

HSI>AC>BALT - 'Altitude Altitude'

Right Knee> Dial - Whoop Whoop

UFC>AP>AP - Whoop Whoop

 

They are all independent of each other so you could have the dial set to 40 ( as they often do IRL) and the APx2 one set to 1900 or something.