G-forces Flashcards
What’s the 3 types of acceleration
Linear
Change in speed - not direction
Radial
Change in direction - not speed
Angular
Change in both speed and direction
What’s the definition of deceleration
Reduction in velocity of a moving body with respect to time
Newtons 1st law ?
Law of Inertia
“Body at rest, tends to stay at rest, body in motion, tends to stay in motion”
Newtons 3rd law ?
“For every action there is an equal and opposite reaction”
What’s the difinition of inertia ?
“The resistance to change in the state of rest or motion”
What are the factors affecting how the accelerative forces are experienced on the body?
Body area & site
Intensity
Rate of onset
Duration
Impact direction
If body area or size increases, the severity of acceleration on the body will…?
Decrease
Which impact direction is worst for the human body (axis)
Gy axis
Where is blod pressure highest when standing ?
In your legs ( gravity )
Which factors decrese G-tolerance
Blood volume + pressure decrease
(Dehydration, fatigue, illness, acute alcohol ect.)
Factors increasing G-tolerance
Anything that raises blood pressure ( Fear, excitement)
Tensing muscles
short build
Anti-G suit
AGSM (anti G straining maneuver)
Which is our highest G tolerance axis ?
Gx
What is the difinition of low magnitude acceleration
G’s from 1-10 lasting for several seconds
What’s high magnitude acceleration ?
G’s exceeding 10 G and lasting less than a second
What’s the aircrew member survivability criteria ?
Amount of deacceleration
Occupiable living space ( enough room )
Aircraft design (CREEP)
