G Forces Flashcards
What does little g mean
Measure of magnitude of an acceleration force with respect to gravity Equal to 32.2 ft./s2 or 9.81 m/s2
What doe big G mean
G= F/W = (massacceleration)/ (massgravity) = acceleration/gravity
What is speed
Magnitude of motion and rate of change
Linear acceleration
Change in speed with out change in direction
Radial acceleration
Change in direction without a change in speed
Angular acceleration
Change in both speed and direction
Deceleration
Reduction in the velocity of a moving body with respect to time
What is the 3rd law of motion
For every action there is a equal opposite reaction
What is centripetal force (radial)
force acting on an object moving in a circular pattern that holds the object on its circular path
Centrifugal force
Force extended on an object owing in a circular pattern that causes an object to move in a straight line
What are the factors of acceleration
- Body area
- intensity
- rate of onset
- duration
- impact direction
How many g’s does ejection seats expose the aviator to
15g’s in 0.1 seconds
If the rate of onset of acceleration increases, the severity of the effect on the body will?
Increase
-Gz forces you
- Up
- Forcing blood to your legs
- Blackout
+Gz forces you
- Down
- Forcing blood to your head
- Red out
-Gy and +Gy do what
(-) is right
(+) is left
Gx+ and -Gx force you
Forward and back wit the + being backwards and - forwards
1.0-2.5 +Gz does what to our body
Make blood pool
2-2.5 gz+ does what to your body
Black out
4.5+ gz does what to your body
Goodnight ur now unconscious
Factors that make G tolerance worse
Dehydration, fatigue, hemorrhage, alcohol, varicose veins
What increases G tolerance
Asymptomatic hypertension, fear, short stocky people, AGSM, anti G suit
What type of forces do our body’s handle the best
Gx +-
What is low magnitude acceleration
1-10G
