5 ms·

There is a video of what it sounds like: https://www.youtube.com/watch?v=WkZGL7RQBVw https://www.youtube.com/watch?v=WkZGL7RQBVw That automated recover voice

There is a video of what it sounds like: https://www.youtube.com/watch?v=WkZGL7RQBVw https://www.youtube.com/watch?v=WkZGL7RQBVw That automated recover voice is quite eerie.

baybal2 6y ago
I think it was his wing mate
- stefan_ 6y ago
  I guess thats possible, but it seems quite.. regular?
  - throwanem 6y ago
    The repeated "Recover!" is indeed the formation leader, not an automated warning. It's as regular as it is because pilots, and especially military pilots, are trained to maintain a very strong radio discipline, and also (as Brian Shul notes in Sled Driver, his SR-71 memoir) because as a point of personal and cultural pride everyone wants to sound like Chuck Yeager on the radio. It makes sense, too; things can go wrong very fast in an airplane, and it does no one any good for a pilot to lose their cool in an emergency. Listen closely, and you'll notice that the formation leader lets that discipline fray a bit in the second and following calls, when some urgency bleeds through. This is because he suspects his trainee is about to die, which is what would indeed have happened if AGCAS hadn't been available. (You can also tell it's a radio call and not an annunciator by the form of address - the full call is "Two, recover!"; "Two" is what someone else in the formation calls its second member. "One" is the formation leader; in a four-ship formation you'd also have "Three" and "Four", and so on for larger groups.) edit: corrected some terminology
    - nanis 6y ago
      > Listen closely, and you'll notice that the element leader lets that discipline fray a bit Actually, the moment I heard him, I thought there was terror/panic in his voice which is warranted because > because he suspects his trainee is about to die came very close. Went from over 16,000 ft to under 5,000 ft. One thing I did not think was "this is a machine talking".
      - throwanem 6y ago
        Yep. The actual AGCAS annunciation is the pair of chevrons advancing from the sides of the HUD into the center, and the blinking cross and "FLYUP" indicates that the system has engaged. For audio, there's a very noticeable horn during recovery, as well as a "Fly up" automatic voice announcement - that's a little hard to pick up due to overlap with a call from the formation leader, but you can catch it if you listen closely.
        jaywalk 6y ago
        There's also an automated (and very calm) voice announcement saying "altitude" 2-3 times before the urgent "fly up!" and horn.
    - l33tman 6y ago
      I guessed that he probably suspected he's unconscious or something, and therefore warranted shouting. After all, the leader had probably seen Top Gun, where this almost happened to Cougar :)
  - Cthulhu_ 6y ago
    Well yeah, formal radio comms have to be. It's not like Top Gun.
hackerNoose 6y ago
The automated one is the female "altitude, altitude, pull up, pull up". The screaming dude is his wingman.
joncrane 6y ago
This is an incredible video. Hearing the pilot gasp for air while a) his wingmates yell on the radio and b) seeing the details on the HUD are amazing. The airspeed goes above Mach 1 while the altitude drops from about 16,000 ft to 4,000 ft. The pilot sustains over 9G when the automated system pulls him out of the dive. Wow!
- 35fbe7d3d5b9 6y ago
  From what I've read in the past, Auto GCAS computes a 5G recovery pull. Speculation was that the pilot came to consciousness at some point during the recovery and applied some extra input to hit 9Gs.
  - Rastonbury 6y ago
    Pilot recovered while pulling 5G? I'd think they would have designed the GCAS to avoid a crash at all costs, regardless of the Gs required. Crashing is worse
    - 35fbe7d3d5b9 6y ago
      It is designed that way. It realizes that by defining a roll to level and +5G climb as a successful recovery, and preventing the aircraft from being flown into a condition where a successful recovery is impossible. So if you're flying right above terrain and you suddenly fly down, the airplane should accept your inputs and fly towards terrain until the moment recovery is impossible and will then engage. This video from the Air Force shows this clearly: https://youtu.be/Wf27X73jxlE?t=144 https://youtu.be/Wf27X73jxlE?t=144 The system allows you to fly low and fast (2300 feet above ground and 500 mph) until a +5G pull wouldn't get you off the ground, then activation.
- reasonabl_human 6y ago
  Agreed, even if he was conscious during that nose dive, pulling 9.1 G’s would send him right back into GLOC before fully recovering.. and likely into the ground as he was already so low... Only this computer system could’ve pulled off such a save. Awesome!
maximente 6y ago
wow, this is making me tear up for some reason. thanks for sharing. i guess i've never seen such a clear case of tech making a life saving impact before.
Ancalagon 6y ago
Question: What repercussions does a pilot face after an incident like this? Is there more physical training done do the breathing maneuvers, and plane training to prevent excess G’s like this? Is the pilot grounded for a certain period of time?
myrandomcomment 6y ago
It’s interesting to note the blacked out parts of the HUD.
rambojazz 6y ago
Could you please translate what they're saying? I can never understand what people say on radio communications.

There is a video of what it sounds like: https://www.youtube.com/watch?v=WkZGL7RQBVw https://www.youtube.com/watch?v=WkZGL7RQBVw That automated recover voice is quite eerie.

baybal2 6y ago

I think it was his wing mate

stefan_ 6y ago
I guess thats possible, but it seems quite.. regular?
- throwanem 6y ago
  The repeated "Recover!" is indeed the formation leader, not an automated warning. It's as regular as it is because pilots, and especially military pilots, are trained to maintain a very strong radio discipline, and also (as Brian Shul notes in Sled Driver, his SR-71 memoir) because as a point of personal and cultural pride everyone wants to sound like Chuck Yeager on the radio. It makes sense, too; things can go wrong very fast in an airplane, and it does no one any good for a pilot to lose their cool in an emergency. Listen closely, and you'll notice that the formation leader lets that discipline fray a bit in the second and following calls, when some urgency bleeds through. This is because he suspects his trainee is about to die, which is what would indeed have happened if AGCAS hadn't been available. (You can also tell it's a radio call and not an annunciator by the form of address - the full call is "Two, recover!"; "Two" is what someone else in the formation calls its second member. "One" is the formation leader; in a four-ship formation you'd also have "Three" and "Four", and so on for larger groups.) edit: corrected some terminology
  - nanis 6y ago
    > Listen closely, and you'll notice that the element leader lets that discipline fray a bit Actually, the moment I heard him, I thought there was terror/panic in his voice which is warranted because > because he suspects his trainee is about to die came very close. Went from over 16,000 ft to under 5,000 ft. One thing I did not think was "this is a machine talking".
    - throwanem 6y ago
      Yep. The actual AGCAS annunciation is the pair of chevrons advancing from the sides of the HUD into the center, and the blinking cross and "FLYUP" indicates that the system has engaged. For audio, there's a very noticeable horn during recovery, as well as a "Fly up" automatic voice announcement - that's a little hard to pick up due to overlap with a call from the formation leader, but you can catch it if you listen closely.
      - jaywalk 6y ago
        There's also an automated (and very calm) voice announcement saying "altitude" 2-3 times before the urgent "fly up!" and horn.
  - l33tman 6y ago
    I guessed that he probably suspected he's unconscious or something, and therefore warranted shouting. After all, the leader had probably seen Top Gun, where this almost happened to Cougar :)
- Cthulhu_ 6y ago
  Well yeah, formal radio comms have to be. It's not like Top Gun.

hackerNoose 6y ago

The automated one is the female "altitude, altitude, pull up, pull up". The screaming dude is his wingman.

joncrane 6y ago

This is an incredible video. Hearing the pilot gasp for air while a) his wingmates yell on the radio and b) seeing the details on the HUD are amazing. The airspeed goes above Mach 1 while the altitude drops from about 16,000 ft to 4,000 ft. The pilot sustains over 9G when the automated system pulls him out of the dive. Wow!

35fbe7d3d5b9 6y ago
From what I've read in the past, Auto GCAS computes a 5G recovery pull. Speculation was that the pilot came to consciousness at some point during the recovery and applied some extra input to hit 9Gs.
- Rastonbury 6y ago
  Pilot recovered while pulling 5G? I'd think they would have designed the GCAS to avoid a crash at all costs, regardless of the Gs required. Crashing is worse
  - 35fbe7d3d5b9 6y ago
    It is designed that way. It realizes that by defining a roll to level and +5G climb as a successful recovery, and preventing the aircraft from being flown into a condition where a successful recovery is impossible. So if you're flying right above terrain and you suddenly fly down, the airplane should accept your inputs and fly towards terrain until the moment recovery is impossible and will then engage. This video from the Air Force shows this clearly: https://youtu.be/Wf27X73jxlE?t=144 https://youtu.be/Wf27X73jxlE?t=144 The system allows you to fly low and fast (2300 feet above ground and 500 mph) until a +5G pull wouldn't get you off the ground, then activation.
reasonabl_human 6y ago
Agreed, even if he was conscious during that nose dive, pulling 9.1 G’s would send him right back into GLOC before fully recovering.. and likely into the ground as he was already so low... Only this computer system could’ve pulled off such a save. Awesome!

maximente 6y ago

wow, this is making me tear up for some reason. thanks for sharing. i guess i've never seen such a clear case of tech making a life saving impact before.

Ancalagon 6y ago

Question: What repercussions does a pilot face after an incident like this? Is there more physical training done do the breathing maneuvers, and plane training to prevent excess G’s like this? Is the pilot grounded for a certain period of time?

myrandomcomment 6y ago

It’s interesting to note the blacked out parts of the HUD.

rambojazz 6y ago

Could you please translate what they're saying? I can never understand what people say on radio communications.