Aeromedical Exam Questions With Complete Solution
G force: "g" - ✔✔Magnitude of accel force w respect to gravity
G force: "G" - ✔✔Magnitude of accel dimensionless force AND acceleration.
- Gravitational force applied to pilots
G Force: LAW OF GRAVITY - ✔✔120 mph (falling speed)
G Force: Define acceleration
Define deceleration - ✔✔Acceleration = rate of change of VELOCITY with respect to time.
Deceleration = reduction in velocity of a moving body with respect to time.
Define inertia - ✔✔resistance to change in the state of rest or motion
Newton's First Law, Newtons third law - ✔✔First law = A body at rest stays at rest, in motion
stays in motion until acted upon by an outside force.
Third law = For every action there is an equal and opposite reaction.
Tri Axial Ref system - ✔✔-+Gz ( up -, down +)
= Gy (Left +, Right -)
Gx (Back +, forward -)
Factors of Acceleration? - ✔✔1. Body area and site
2. Intensity
3. Rate of Onset
4.Duration
5.Impact Direction
AKA physiological Affects, body area and site is only one if increased, has decreased effects.
,Low Magnitude Accelerations - ✔✔G's ranging from 1-10 G's for a few seconds
High Magnitude Acceleration - ✔✔G's >10 for less than 1 SECOND
Factors decreasing G tolerance - ✔✔Stagnant Hypoxia (blood pooling in low extremities) at
greater than 2 G's blood flow to eye decreases and causes a gradual loss of peripheral vision
(gray out)
+ Gz tolerance limits - ✔✔1.0-2.5 Gz : blood pooling
2.5-4.0 - Gray out!!!
4.0-4.5- blackout
4.5+ - unconsciousness
Factors that decrease G tolerance - ✔✔-dehydration
-fatigue/illness
-hemmorrhage
-acute alc abuse
-varicose veins
Factors increasing G tolerance - ✔✔Asymptomatic hypertension
Fear & excitement
Tensing of muscles
Short stocky build
L-1 maneuver Straining
Anti-G suit
Sustained headward aacceleration (+Gz) - ✔✔downward G force= blood pooling 1-2.5, grayout
2.5-4
, Sustained foot ward accel (-Gz) - ✔✔downward movement g's going up = red out at 2.5-3,
vision affected 1-2.5 0-1= blood pooling
Which G force does body not tolerate well? - ✔✔Left to Right/ Gy forces
High magnitude acceleration effects - ✔✔Minor discomfort
minor injury
incapacitating
irreversible injury
lethal
examples; aircraft crashes, ejection seats, parachutes
High magnitude factors - ✔✔-Degree of accel & intensity AKA "Peak G"
-Rate of accel application or onset AKA "jolt" Rate of change or onset of accelerative forces
-Direction or axis of force application determining if acceleration or deceleration occurs
Decelerative forces can cause incapacitation to the crewmember? T/F? - ✔✔True
Crash survivability criteria - ✔✔-amount of force transmitted to crewmember
-occupiable living space
-Aircraft design features CREEP
(How much force? How much Space? How it's made??)
Which limit to whole body impact can take the most impact? - ✔✔chest -> back G forces =
_Gx @ 80 G
What is creep? - ✔✔Container, Restraint system, Environment, Energy Absorption, Post Crash
Factors
Three types of hazards? - ✔✔Physical, Biological (illnesses), Chemicak (toxic reactions)
G force: "g" - ✔✔Magnitude of accel force w respect to gravity
G force: "G" - ✔✔Magnitude of accel dimensionless force AND acceleration.
- Gravitational force applied to pilots
G Force: LAW OF GRAVITY - ✔✔120 mph (falling speed)
G Force: Define acceleration
Define deceleration - ✔✔Acceleration = rate of change of VELOCITY with respect to time.
Deceleration = reduction in velocity of a moving body with respect to time.
Define inertia - ✔✔resistance to change in the state of rest or motion
Newton's First Law, Newtons third law - ✔✔First law = A body at rest stays at rest, in motion
stays in motion until acted upon by an outside force.
Third law = For every action there is an equal and opposite reaction.
Tri Axial Ref system - ✔✔-+Gz ( up -, down +)
= Gy (Left +, Right -)
Gx (Back +, forward -)
Factors of Acceleration? - ✔✔1. Body area and site
2. Intensity
3. Rate of Onset
4.Duration
5.Impact Direction
AKA physiological Affects, body area and site is only one if increased, has decreased effects.
,Low Magnitude Accelerations - ✔✔G's ranging from 1-10 G's for a few seconds
High Magnitude Acceleration - ✔✔G's >10 for less than 1 SECOND
Factors decreasing G tolerance - ✔✔Stagnant Hypoxia (blood pooling in low extremities) at
greater than 2 G's blood flow to eye decreases and causes a gradual loss of peripheral vision
(gray out)
+ Gz tolerance limits - ✔✔1.0-2.5 Gz : blood pooling
2.5-4.0 - Gray out!!!
4.0-4.5- blackout
4.5+ - unconsciousness
Factors that decrease G tolerance - ✔✔-dehydration
-fatigue/illness
-hemmorrhage
-acute alc abuse
-varicose veins
Factors increasing G tolerance - ✔✔Asymptomatic hypertension
Fear & excitement
Tensing of muscles
Short stocky build
L-1 maneuver Straining
Anti-G suit
Sustained headward aacceleration (+Gz) - ✔✔downward G force= blood pooling 1-2.5, grayout
2.5-4
, Sustained foot ward accel (-Gz) - ✔✔downward movement g's going up = red out at 2.5-3,
vision affected 1-2.5 0-1= blood pooling
Which G force does body not tolerate well? - ✔✔Left to Right/ Gy forces
High magnitude acceleration effects - ✔✔Minor discomfort
minor injury
incapacitating
irreversible injury
lethal
examples; aircraft crashes, ejection seats, parachutes
High magnitude factors - ✔✔-Degree of accel & intensity AKA "Peak G"
-Rate of accel application or onset AKA "jolt" Rate of change or onset of accelerative forces
-Direction or axis of force application determining if acceleration or deceleration occurs
Decelerative forces can cause incapacitation to the crewmember? T/F? - ✔✔True
Crash survivability criteria - ✔✔-amount of force transmitted to crewmember
-occupiable living space
-Aircraft design features CREEP
(How much force? How much Space? How it's made??)
Which limit to whole body impact can take the most impact? - ✔✔chest -> back G forces =
_Gx @ 80 G
What is creep? - ✔✔Container, Restraint system, Environment, Energy Absorption, Post Crash
Factors
Three types of hazards? - ✔✔Physical, Biological (illnesses), Chemicak (toxic reactions)
