Enviromental Knowledge Flashcards
1
Q
What is the standard atmospheric pressure in hg (mercury) in US?
A
29.92 IN HG
2
Q
Viscosity
A
Property of a fluid that causes it to resist flowing.
3
Q
What two forces act together to provide drag to the wing (resist airflow over the wing)?
A
Friction & Viscosity
4
Q
What is the average pressure exerted by the weight of the atmosphere at sea level?
A
14.70 psi
5
Q
What is the standard temperature lapse rate?
A
When temperature decreases at the rate of approximately 3.5F or 2C per 1,000 feet up to 36,000 feet.
6
Q
What is standard pressure lapse rate?
A
When pressure decreases at a rate of approximately 1 “HG per 1,000 ft of altitude gain to 10,000 feet.
