Airplane instruments, engines, systems

Question 1

What is a slip and skid, relating the rate of turn to the angle of bank?

Answer 1

Slip = turn rate too slow for angle of bank, Skid = turn rate too high

Question 2

What is purpose of the vacuum system?

Answer 2

To drive the gyro-driven instruments

Question 3

What are two forces leading to precession of heading indicator?

Answer 3

bearing friction and rotation of the earth

Question 4

Why do we have a heading indicator rather than just a compass?

Answer 4

Heading indicators are less affected by turbulence and other factors

Question 5

What is a lubber line?

Answer 5

Line on a compass that indicates the direction (see Fig 7-31 of PHAK)

Question 6

What are agonic lines, and how do they relate to magnetic vs. true course?

Answer 6

The line passing between poles, near Chicago, is the agonic line. Along this line, the magnetic and true poles are aligned. East of this line, the magnetic North Pole is to the west, and west of this line it is to the east. So if pilot wants to fly true heading, east of Chicago you must add onto magnetic heading, and west of this you must subtract.

Question 7

Is IAS and CAS more similar at low or high speeds?

Answer 7

High

Question 8

What are two ways of finding TAS?

Answer 8

1) use a flight computer; 2) Add 2% to CAS for each 1000 ft

Question 9

What V-speeds are at the lower and upper ends of the white, green, and yellow arcs of the airspeed indicator?

Answer 9

Vso to Vfe, Vs1 to Vno, Vno to Vne

Question 10

How do variation, deviation, and dip error cause problems with compass heading?

Answer 10

Variations are due to differences between magnetic and true poles, deviation is due to electrial interference from aircraft, and dip error is caused by acceleration and deceleration when airplane is flying east-west