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One of the arguments for UAVs (unmanned aerial vehicles - and no, I won't convert to UAS!) is that they aren't limited by the human body' ability to withstand high accelerations (being pressed into one direction when turning rapidly).
Untrained humans can sustain an acceleration of up to about 6g till black-out (1g = the strength of gravity).
Trained pilots with normal G suits can sustain 9g and fighters have been designed to exploit this since the early 70's.
One trick to ease high g load turns is to have the body horizontal instead of vertical - the prone position helps a lot. The practical consequence of this discovery is still visible in the sloped seats of the F-16, for example.
Unmanned airframes could be built to fly 12g turns. Even higher accelerations would likely also be possible, but the demands rise extremely, especially with long wingspans. Missiles with minimal wingspans cane fly more than 40g turns.
A fighter UAV that substitutes for a real fighter would probably be limited to 12-15g.
That's where I'd like to throw the Swiss-German development "Libelle" (dragonfly) into the arena: A revolutionary G suit that enables 11-12 g turns instead of 9g turns for manned fighters.
It works with water, unlike normal, pneumatic G suits.
The human body can sustain much higher g loads if surrounded by water (which cannot be compressed much and is the same as most of our body). A cockpit full of water was always impractical, and a full water suit as well - the Libelle suit limits the water to the minimum to achieve a great effect. The limit of pilots with a custom-made Libelle suit is more like 11-12g than 9g. Normal breathing is possible till 10g. Actions that usually become impossible long before the limit of 9g are possible at much higher accelerations (like up to 10g instead of up to 7g) in that suit. That's certainly the main advantage of the suit in today's fighters.
A normal fighter turned into a drone cannot turn at more than 9g due to structural limits, manned and unmanned aircraft of new design can be flown at up to 11-12g - the drones only rule beyond 12g, not beyond 9g as many people assert.
The utility of manoeuvres beyond 12g is questionable, though. High acceleration turns were historically and still are primarily defensive manoeuvres (unlike the Top Gun movie nonsense tells us). 12g might be more than enough to dodge modern missiles - which need to withstand even more extreme accelerations than their target does to hit.
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One of the arguments for UAVs (unmanned aerial vehicles - and no, I won't convert to UAS!) is that they aren't limited by the human body' ability to withstand high accelerations (being pressed into one direction when turning rapidly).
Untrained humans can sustain an acceleration of up to about 6g till black-out (1g = the strength of gravity).
Trained pilots with normal G suits can sustain 9g and fighters have been designed to exploit this since the early 70's.
One trick to ease high g load turns is to have the body horizontal instead of vertical - the prone position helps a lot. The practical consequence of this discovery is still visible in the sloped seats of the F-16, for example.
Unmanned airframes could be built to fly 12g turns. Even higher accelerations would likely also be possible, but the demands rise extremely, especially with long wingspans. Missiles with minimal wingspans cane fly more than 40g turns.
A fighter UAV that substitutes for a real fighter would probably be limited to 12-15g.
That's where I'd like to throw the Swiss-German development "Libelle" (dragonfly) into the arena: A revolutionary G suit that enables 11-12 g turns instead of 9g turns for manned fighters.
It works with water, unlike normal, pneumatic G suits.
The human body can sustain much higher g loads if surrounded by water (which cannot be compressed much and is the same as most of our body). A cockpit full of water was always impractical, and a full water suit as well - the Libelle suit limits the water to the minimum to achieve a great effect. The limit of pilots with a custom-made Libelle suit is more like 11-12g than 9g. Normal breathing is possible till 10g. Actions that usually become impossible long before the limit of 9g are possible at much higher accelerations (like up to 10g instead of up to 7g) in that suit. That's certainly the main advantage of the suit in today's fighters.
A normal fighter turned into a drone cannot turn at more than 9g due to structural limits, manned and unmanned aircraft of new design can be flown at up to 11-12g - the drones only rule beyond 12g, not beyond 9g as many people assert.
The utility of manoeuvres beyond 12g is questionable, though. High acceleration turns were historically and still are primarily defensive manoeuvres (unlike the Top Gun movie nonsense tells us). 12g might be more than enough to dodge modern missiles - which need to withstand even more extreme accelerations than their target does to hit.
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