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Answers posted in about the next 24 hrs.

 

 

1.When an inertial platform system is operating on board an aircraft, it is necessary to use a device with the following characteristics, in order to keep the vertical line with a pendulous system:

Here are your choices.

 

a.With damping and a period of 84 minutes

b.Without damping and a period of about 85 seconds

c.Without damping and a period of about 84 minutes

d.With damping and a period of 84 seconds

e.With damping and a period of about 84 minutes

 

2.When accelerating forward the otoliths in the utriculus/sacculus will;

 

a. give the illusion of climbing (body tilting backwards, nose of the aircraft going up)

b. give the illusion of descending ( body tilting downwards, or forwards, nose of the aircraft going down)

c. give the illusion of banking

d. give the illusion of straight and level flight

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"What is the airspeed velocity of an unladen swallow."

 

African or European?

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Chosen at random from a 10,000 question data base, answers posted 24 hrs later.

 

A gaseous sensor/responder tube fire sensor is tested by:

 

a. Checking the sensor with pressurized gas

b. Heating up the sensor with test power connection

c. Checking the continuity of the system with test switch

d. Checking the wiring harness for faults but not the sensor

 

Choose the most correct answer.

 

2. A pilot wishes to turn left on to a northerly heading with 10° bank at a latitude of 50° North. Using a direct reading compass, in order to achieve this he must stop the turn on an approximate heading of:

 

a.330 degrees

b.355 degrees

c.015 degrees

d.030 degrees

 

Choose the most correct answer.

 

At what Longitude?

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Answers posted in about the next 24 hrs.

 

 

1.When an inertial platform system is operating on board an aircraft, it is necessary to use a device with the following characteristics, in order to keep the vertical line with a pendulous system:

Here are your choices.

 

a.With damping and a period of 84 minutes

b.Without damping and a period of about 85 seconds

c.Without damping and a period of about 84 minutes

d.With damping and a period of 84 seconds

e.With damping and a period of about 84 minutes

 

2.When accelerating forward the otoliths in the utriculus/sacculus will;

 

a. give the illusion of climbing (body tilting backwards, nose of the aircraft going up)

b. give the illusion of descending ( body tilting downwards, or forwards, nose of the aircraft going down)

c. give the illusion of banking

d. give the illusion of straight and level flight

 

 

To answer INS questions you must first understand the actual operation of an Inertial Reference Platform:

First, an airplane knows where it is at all times. It knows this because it knows where it isn't.

By subtracting where it is from where it is not, or where it isn't from where it is (whichever is greater), the

aircraft obtains a difference or deviation. The inertial navigation system uses deviation to generate

corrective commands to drive the aircraft from a position where it is to a position where it isn't. Arriving at

the position where it wasn't, it now is.

Consequently, the position where it wasn't is now the position where it is, and it follows that the position

where it was is now not the position where it isn't. In the event that the position where it is now is not the

position where it wasn't, the system has acquired a variation. Variations are external factors and are beyond

the scope of this discussion

In simple terms, the variation is the difference between where the aircraft is and where it isn't. If variation is

considered a significant factor, it may be corrected by the use of the Doppler system, however for this to

work, the aircraft must also know where it was.

The "thought process" of the system is as follows:

Because a variation has modified some of the information, which the aircraft has obtained, it is not sure

where it is. However, it is sure where it isn't (within reason...) and it knows where it was. It now subtracts

where it should be from where it wasn't (or vice versa...) and by differentiating this from the algebraic

difference between it's deviation and it's variation (which is called error), it computes the correct

information to compensate for all factors, thus supplying accurate navigation information.

In even simpler terms, the aircraft calculates the difference between where it is, where it was, at least two

places where it isn't, and where it should be to determine the path to get where it wants to be.

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