AVIT 309 QUESTIONS AND ANSWERS
What percent of accidents '05 to '16 where caused by inappropriate response or
interaction with aircraft equipment - Answer -46.3%
Atmospheric function - Answer -Provide Life Support (oxygen and pressure. Protection
from harmful effects of UV and space radiation, thermal variations, and orbital material
striking earth.
FAA classifies pilots as - Answer -occupational radiation workers
How do we decrease radiation risks in the aviation industry? - Answer -sunscreen/UVA
protectant sunglasses. Know your exposure FAA AC 120-61A
O-Zone depletion creates - Answer -50% increase in lightning strikes, increased storm
size and activity, increased CO2
gases in atmosphere - Answer -Oxygen 20.95%
Nitrogen 78.09%
Carbon Dioxide .04%
What determines our ability to perform - Answer -combination of pressure and oxygen
percentage
Full acclimatization takes - Answer -18.4 days per mile (5280), can not acclimate above
10,000 ft
Long term physiologic changes - Answer -increase in RBC mass, mitochondria,
capillaries, & arterial pressure.
Short Term physiologic changes - Answer -hyperventilation, shortness of breath,
changed breathing pattern at night, increased urination
What is barometric pressure - Answer -the pressure due to the weight of the gases
attracted to earth. Decreases as we go to altitude
Temp lapse rate - Answer -2 degree C per 1000 ft
Isothermic layer of stratosphere - Answer --55 C or 67 F
water vapor with altitude - Answer -decreases
Troposphere - Answer -SL to 350 (average), standard temperature lapse rate, most
weather events occur here, ranges from 23,000 ft to 56,000 ft
, Where is the jet stream? - Answer -Tropopause
Stratosphere - Answer -FL 350 to 50 miles altitude, common cruise altitude, extremely
cold, isotherm layer at 67F
Ionosphere - Answer -Blocks radiation through the Van Allen Belts
Exosphere - Answer -1200 miles, space
Physiologic Divisions - Answer -1. Zone of Normal adaptation- healthy people. Located
up to 10,000 ft msl, we adapt to increase oxygen delivery. Does not impair performance.
2. Zone of physiologic deficiency- 10,000 feet to 50,000, unable to adapt and function
normally. Conventional life support equipment is needed to support normal functioning.
3. Space equivalent zone- special life support equipment is needed
Gas Laws - Answer -(boyle's law) subjected to pressure.
(charles' law) subjected to heat.
(henry's law) dissolved in a solution.
Boyle's law - Answer -Pressure and volume of a certain amount of gas are constant.
EXPLAINS TRAPPED GAS PROBLEMS.
Charles' Law - Answer -As gas is heated, its volume increases. If the volume is stable
the pressure increases.
EXPLAINS VARIATION IN PRESSURE GAUGES IN EXTREME ENVIRONMENTS.
Henry's law - Answer -The amount of gas dissolved in a solution is proportional to the
partial pressure of gas over the solution.
DECREASES IN PRESSURE COULD LEAD TO BUBBLES-EVOLVED GAS.
Law of Gaseous Diffusion - Answer -Gases will diffuse from high pressure to a low
pressure (or concentration) naturally.
EXPLAINS THE MOVEMENT OF GASES IN THE LUNGS AND BLOOD DUE TO
THEIR CONCENTRATIONS AND PRESSURE GRADIENT
What percent of accidents '05 to '16 where caused by inappropriate response or
interaction with aircraft equipment - Answer -46.3%
Atmospheric function - Answer -Provide Life Support (oxygen and pressure. Protection
from harmful effects of UV and space radiation, thermal variations, and orbital material
striking earth.
FAA classifies pilots as - Answer -occupational radiation workers
How do we decrease radiation risks in the aviation industry? - Answer -sunscreen/UVA
protectant sunglasses. Know your exposure FAA AC 120-61A
O-Zone depletion creates - Answer -50% increase in lightning strikes, increased storm
size and activity, increased CO2
gases in atmosphere - Answer -Oxygen 20.95%
Nitrogen 78.09%
Carbon Dioxide .04%
What determines our ability to perform - Answer -combination of pressure and oxygen
percentage
Full acclimatization takes - Answer -18.4 days per mile (5280), can not acclimate above
10,000 ft
Long term physiologic changes - Answer -increase in RBC mass, mitochondria,
capillaries, & arterial pressure.
Short Term physiologic changes - Answer -hyperventilation, shortness of breath,
changed breathing pattern at night, increased urination
What is barometric pressure - Answer -the pressure due to the weight of the gases
attracted to earth. Decreases as we go to altitude
Temp lapse rate - Answer -2 degree C per 1000 ft
Isothermic layer of stratosphere - Answer --55 C or 67 F
water vapor with altitude - Answer -decreases
Troposphere - Answer -SL to 350 (average), standard temperature lapse rate, most
weather events occur here, ranges from 23,000 ft to 56,000 ft
, Where is the jet stream? - Answer -Tropopause
Stratosphere - Answer -FL 350 to 50 miles altitude, common cruise altitude, extremely
cold, isotherm layer at 67F
Ionosphere - Answer -Blocks radiation through the Van Allen Belts
Exosphere - Answer -1200 miles, space
Physiologic Divisions - Answer -1. Zone of Normal adaptation- healthy people. Located
up to 10,000 ft msl, we adapt to increase oxygen delivery. Does not impair performance.
2. Zone of physiologic deficiency- 10,000 feet to 50,000, unable to adapt and function
normally. Conventional life support equipment is needed to support normal functioning.
3. Space equivalent zone- special life support equipment is needed
Gas Laws - Answer -(boyle's law) subjected to pressure.
(charles' law) subjected to heat.
(henry's law) dissolved in a solution.
Boyle's law - Answer -Pressure and volume of a certain amount of gas are constant.
EXPLAINS TRAPPED GAS PROBLEMS.
Charles' Law - Answer -As gas is heated, its volume increases. If the volume is stable
the pressure increases.
EXPLAINS VARIATION IN PRESSURE GAUGES IN EXTREME ENVIRONMENTS.
Henry's law - Answer -The amount of gas dissolved in a solution is proportional to the
partial pressure of gas over the solution.
DECREASES IN PRESSURE COULD LEAD TO BUBBLES-EVOLVED GAS.
Law of Gaseous Diffusion - Answer -Gases will diffuse from high pressure to a low
pressure (or concentration) naturally.
EXPLAINS THE MOVEMENT OF GASES IN THE LUNGS AND BLOOD DUE TO
THEIR CONCENTRATIONS AND PRESSURE GRADIENT
