CV-16 Liaoning (001 carrier) Thread II ...News, Views and operations

[kwaigonegin]

Having watched the video posted by Jura, an idea came to my mind: when an airplane is arrested landing, would it help if the pilot's seat belt can automatically tighten up to keep him from charging forward?

Good question but in real life not a necessity. Approach speed about 135 knots down to zero in less than 2 seconds at about 750 ROD. Sounds scary but it really isn't. The human body and 'brain' won't be going places at those numbers.

G forces is minimal as well on the human body during landing. Glide path angle usually sets to 3.5% AOA about 8%. Idea is to catch the 3 wire so you land about 15 to 20. Ft before since they are 40 ft apart.
The acceleration during takeoff from a standpoint of lateral force is actually more than the deceleration for arrested landing.

 

[vesicles]

Good question but in real life not a necessity. Approach speed about 135 knots down to zero in less than 2 seconds at about 750 ROD. Sounds scary but it really isn't. The human body and 'brain' won't be going places at those numbers.

G forces is minimal as well on the human body during landing. Glide path angle usually sets to 3.5% AOA about 8%. Idea is to catch the 3 wire so you land about 15 to 20. Ft before since they are 40 ft apart.
The acceleration during takeoff from a standpoint of lateral force is actually more than the deceleration for arrested landing.

Actually at that kind of deceleration, your body parts are moving all over the place, often against each other and bumping into each other. And this is especially bad for your brain, which is encased in a small and hard box of your skull. The brain is not tethered to the skull in any way. It is loosely "hanging" in there and free to move in whichever way it wants to. Even a simple slap on the face causes brain to move like crazy within the skull. Just imagine you have a glass lunchbox containing a piece of jello that is only slightly smaller than the box itself. Now you shake the box. Imagine how the jello moves... Your brain is literally the consistency of jello. And it is bumping into hard skull like mad in all directions even with a simple slap on the face.

Deceleration of an arrested landing on a CV is so much harder on your brain than a slap on your face. As Blackstone indicated, You absolutely need your neck and back to help cushioning the blow. Otherwise, your brain would slam into your skull so hard that it would bruise the brain and cause internal bleeding. So my guess is that the forward movement is actually an intended move to help cushioning the blow and prevent brain injury.

 

[KIENCHIN]

Actually at that kind of deceleration, your body parts are moving all over the place, often against each other and bumping into each other. And this is especially bad for your brain, which is encased in a small and hard box of your skull. The brain is not tethered to the skull in any way. It is loosely "hanging" in there and free to move in whichever way it wants to. Even a simple slap on the face causes brain to move like crazy within the skull. Just imagine you have a glass lunchbox containing a piece of jello that is only slightly smaller than the box itself. Now you shake the box. Imagine how the jello moves... Your brain is literally the consistency of jello. And it is bumping into hard skull like mad in all directions even with a simple slap on the face.

Deceleration of an arrested landing on a CV is so much harder on your brain than a slap on your face. As Blackstone indicated, You absolutely need your neck and back to help cushioning the blow. Otherwise, your brain would slam into your skull so hard that it would bruise the brain and cause internal bleeding. So my guess is that the forward movement is actually an intended move to help cushioning the blow and prevent brain injury.

Is there a limitation to the number of sorties a naval pilot can make in a given time? That is to allow the brain to recover from the landing assuming there will be limited brain bruising.

 

[vesicles]

Is there a limitation to the number of sorties a naval pilot can make in a given time? That is to allow the brain to recover from the landing assuming there will be limited brain bruising.

I thought there were limits as to how many landings a pilot can do on a single day. Someone mentioned a while back. Not sure of the actual number though...

Not only brain, but also almost every part of your body sustains so much stress during the landing.

 

[kwaigonegin]

Actually at that kind of deceleration, your body parts are moving all over the place, often against each other and bumping into each other. And this is especially bad for your brain, which is encased in a small and hard box of your skull. The brain is not tethered to the skull in any way. It is loosely "hanging" in there and free to move in whichever way it wants to. Even a simple slap on the face causes brain to move like crazy within the skull. Just imagine you have a glass lunchbox containing a piece of jello that is only slightly smaller than the box itself. Now you shake the box. Imagine how the jello moves... Your brain is literally the consistency of jello. And it is bumping into hard skull like mad in all directions even with a simple slap on the face.

Deceleration of an arrested landing on a CV is so much harder on your brain than a slap on your face. As Blackstone indicated, You absolutely need your neck and back to help cushioning the blow. Otherwise, your brain would slam into your skull so hard that it would bruise the brain and cause internal bleeding. So my guess is that the forward movement is actually an intended move to help cushioning the blow and prevent brain injury.

Like I said the impact on the 'brain' is minimal. I would argue a forceful slap or someone violently shaking your head is much more significant than landing on a carrier from a standpoint of TBI.
I've heard of back pains and maybe even pinch nerves from the impact but I've never heard of brain injury from naval aviators before due to deceleration unless he literally hits his head on something.
Compare to a high performance car. A car with very good brakes can stop a car from 60-0 in less than 100 ft. An aircraft going from 150 to 0 in 300 ft doesn't have significantly more impact on the brain.
Trust me I know what I'm talking about. There are a lot of things that's bad during traps however TMI isn't one of them.

 

[weig2000]

A car with very good brakes can stop a car from 60-0 in less than 100 ft. An aircraft going from 150 to 0 in 300 ft doesn't have significantly more impact on the brain.

That's approximately half of the deceleration force compared to aircraft landing on the carrier, using the numbers above.

 

[asif iqbal]

The question is it's great seeing CV-16 doing these live excercises and sorties but this is all close to home

The question is not if but when, and it's when will China be able to do such manoeuvres far from home shores deep into the Pacific ?

Not that is a whole new game staging at sea far from home shores

 

[Intrepid]

The question is not if but when, and it's when will China be able to do such manoeuvres far from home shores deep into the Pacific?

When they need to do it.

 

[KIENCHIN]

The question is it's great seeing CV-16 doing these live excercises and sorties but this is all close to home

The question is not if but when, and it's when will China be able to do such manoeuvres far from home shores deep into the Pacific ?

Not that is a whole new game staging at sea far from home shores

Maybe they are waiting on the type 901 which just started sea trials to be commissioned.

 

[asif iqbal]

Maybe they are waiting on the type 901 which just started sea trials to be commissioned.

Good point for far away deployment they need carrier replenishment