How do jet pilots avoid passing out from high g's and thin air?

Question

i always see their passengers passing out are they just born immune to it?

Answer 1

they use a combination of G suits, oxygen, breathing techniques and shear muscle (muscles strengthened through use, in other words they get used to it).

Answer 2

G-Suits that inflate preventing loss of blood

Answer 3

Jim's right, but the suit's only good for about 1/2 to a whole g; the L-1 or AGSM (Anti-G Straining Manuever) is good for up to 4.  Famous tape from Brooks of a guy talking at 9gs in a upright seat.

A-TAGS/Combat Edge is really not much more effect at combating the force but helps on the fatigue levels.  Guys that are flying 3 sorties a day are now much fresher on go 3 than they used to be.

Just don't put your car keys in a chest pocket under the gerkin.

Answer 4

Oxygen masks, and G suits.  Pilots go through special training to be able to stand up to excessive G loads.  When they are taking passengers that aren't ready for it or haven't experienced it before, they often pass out.

Answer 5

what he said and special breathing techniques that they learn

Answer 6

In fighters the pilots use 'g-suits' which are worn around the legs and lower torso. These inflate while pulling Gs and restrict the blood flowing away from the brain.

Further, pilots keep themselves in prime health with the lower abdominal muscles kept firm and flab free. These help under Gs when the pilot can tense them and prevent blood flowing easily to the lower extremities.

Use of oxygen also helps in raising the G thresh hold.

PS: The passengers are not trained to withstand Gs.

Answer 7

The atmosphere is covered by the O2 mask.  As far as G-tolerance there's several factors involved.  

1- Physical condition.  For positive G, excellent upper body strength has been proven to be very important.  This is why most crews in high-G environments work out frequently.

2- The "L-1" maneuver.  This is straining, almost like straining on the toilet-frankly.  Also taking very short breaths-so as not to fully deplete one's lungs. This keeps the blood from pooling in the lower extremities-which leads to blackout.  To do this effectively requires some practice and anticipation.  

3- The G-suit.  The newest Combat-Edge suite is miles ahead of the technology I had in the F4.  These are tight-fitting garments around the legs and abdomen.  Under G, they inflate putting pressure to constrict the blood vessels, again slowing the flow downwards away from the brain.  

Passengers have G-suits, and are taught the straining maneuver. But most are either caught up in the excitement, or frankly somewhat apprehensive so they either don't do it properly, or do it late.

Answer 8

special suits they wear and breathing oxygen.

Answer 9

order a pizza

Answer 10

they wear special trousers that squeeze their legs so that the blood can't rush from their brain and heart down to their feet which causes them to pass out