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Block 12 > 1a Radar Altimeter Systems > Flashcards

1a Radar Altimeter Systems Flashcards

1
Q

This translates air pressure into height above sea level

A

Aneroid altimeter

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2
Q

This uses transmitted radio waves to measure aircraft height above the earth‘s terrain

A

Radar altimeter

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3
Q

The radar altimeter uses the formula-

Distance = ______ x _______

A

Time, Constant

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4
Q

The frequency range for CARA is what

A

4.3 GHz +/- 50 MHz

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5
Q

One of the characteristics of CARA is that it penetrates what

A

Foliage

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6
Q

What is the ground speed for CARA

A

1800 knots

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7
Q

Altitudes from 0-5,000 ft are displayed in what format 

A

Analog and digital

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8
Q

Altitudes of 5,000ft - 50,000ft are displayed in what format 

A

Digital only

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9
Q

What are the two major components in group 1

A

RT

Height indicator

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10
Q

Additional components in group 2 include what? 

A 
Antennas 
Interface Adapter
Cable adapters 
Mounting adapters 
Voice warning generator
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11
Q

This is used to compensate for height of antennas above ground and length of cables from RT to antennas

A

Aircraft installation delay (AID) 

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12
Q

This component supplies a warning signal to the voice warning generator when aircraft altitude falls below the preset level

A

CARA height indicator

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13
Q

The mounting adapters include R/T, antennas and what?

A

Interface adapter

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14
Q

This contains the circuitry that provides fault isolation to the SRU level within the R/T unit

A

BIT processor

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15
Q

This type of test is activated upon power on, is undetectable to the operator and occurs 2–3 times per second

A

Automatic self test

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16
Q

This type of test has a two-step process, it’s digital display shows 88888 with the analog pointer at 500 feet and the R/T lamp let for 1.5 seconds

A

Push – to – test

17
Q

This is used during back shop maintenance/repair

A

Maintenance built in test MBIT

18
Q

Failure indications display the word ________ on the digital display

A

Fail 

Block 12 (11 decks)

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