(E) Air Data System

Question 1

What are the three key parameters given to operators?

Answer 1

• Airspeed
• Altitude
• Vertical speed

Question 2

Altimeter

Answer 2

It is used to measure the altitude of an aircraft and relies on the fact the atmospheric pressure decrease with altitude

Question 3

Airspeed Indicator

Answer 3

• It registers the speed that the aircraft is travelling relative to the surrounding air
• Depends greatly on both the pitot and static pressure for its operation

Question 4

Machmeter

Answer 4

• Used to prevent structural damage or loss of control of an A/C. Unit is Mach Number
• Machmeter NOT to be used for air combat
• Speed of sound decreases with altitude

Question 5

Vertical Speed Indicator

Answer 5

Depends upon the rate of pressure change within the pitot tube