Air Data Computers

Question 1

This is used to accurately measure critical air mass properties.

Tracks pressure and temperature changes on all flight modes.

Predicts capture points for autopilot, provide signals for use by flight instruments nav & engine systems

Answer 1

(ADC) Air Data computer

Question 2

Pitot Pressure (Pt)
Static Pressure (Ps)
TAT
AOA

Answer 2

ADC inputs

Question 3

It contributes to the overall accuracy of the ADC system by making corrections to pressure altitude

Its purpose is:
to produce a minimal residual static system error.

May also be influenced by the current useful weight and angle of attack (AOA)

Answer 3

Static Source Error Correction (SSEC)

Question 4

• Bonded strain gauge
• Deposited or ion implanted piezo-resistive elements
• Capacitive elements

Answer 4

3 common transducer design

Question 5

Mandated for operation in airspace between FL290 and FL410

Improved altimetry and auto-pilot systems makes this possible

Systems and flight crew MUST comply with strict operational requirements

1000 foot vertical separation between aircraft

Needs approval to fly airspace

Answer 5

RVSM - Reduced Vertical Separation Minima

Question 6

Two independent altitude measuring systems

Altitude alerting system

Automatic Altitude Control system

Secondary Surveillance Radar with Mode C altitude reporting capability

Operator has approved maintenance and repair procedures

Operator has approved flight crew procedures

Answer 6

RVSM Approval Criteria:

Question 7

An aircraft can stall at ______ speed

Answer 7

ANY

Question 8

The ______ (aircraft) will ALWAYS stall at the same angle of attack

Answer 8

AIRFOIL

Question 9

The critical angle of attack for most airfoils is typically between ______ degrees

Answer 9

15-20 degrees

Question 10

Mandated for operation of RVSM in airspace is between _______ and ______

Answer 10

FL290 and FL410

Question 11

_______ foot vertical separation between aircraft of RVSM

Answer 11

1000ft

Question 12

Which is more accurate measurement for determining the airfoil stall?

Answer 12

AOA

Question 13

Where can you find the stall warning switch?

Answer 13

leading edge of the wing

Question 14

Two styles of AOA probes

Answer 14

Vane type probe

differential pressure sensing probe

Question 15

AOA probe that consists of a shaped section (vane) always pointed to the direction of relative airflow

typically found on the side of fuselage

Consist of moving parts

Answer 15

Vane Style probe

Question 16

AOA probe that senses pressure through several different holes

Pressures are sent to the interface of the computer using pneumatic HOSES or SENSE LINE

NO MOVING PARTS

Answer 16

Differential Pressure probe

Question 17

AOA transducer types

Answer 17

HINGED VANE - VAne type

SLOTTED PROBE - Differential pressure

Question 18

Type of transducer connected to an angle measuring device like a SYNCHRO

rotate in the wind and angle information is sent to the ADC

Answer 18

Hinged Vane

Question 19

Type of transducer where two static lines connected to ADC to derive AOA from measured pressure difference

Answer 19

Slotted Probe Types