EFIS ADI/HSI Difference?
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EFIS ADI/HSI Difference?
What is the difference between the electronic attitude directional indicator and the electronic horizontal situation indicator on the EFIS?, as what i'm reading they seem to be described as two different instruments
Thnaks
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Erm, they are two different instruments...?
The Electronic Attitude Director Indicator (EADI) displays the attitude.
The Electronic Horizontal Situation Indicator (EHSI) displays the horizontal situation.
The clue is rather in the name. They are both Electronic Flight Instrument Systems, but replace the old Attitude Indicator (or artificial horizon) and directional gyro instruments with a nice clean electronic display which can also show a lot more information.
The Electronic Attitude Director Indicator (EADI) displays the attitude.
The Electronic Horizontal Situation Indicator (EHSI) displays the horizontal situation.
The clue is rather in the name. They are both Electronic Flight Instrument Systems, but replace the old Attitude Indicator (or artificial horizon) and directional gyro instruments with a nice clean electronic display which can also show a lot more information.
Last edited by RTN11; 18th Jan 2013 at 14:36.
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Thanks for the reply RTN11
Sorry brain fart! i had it in my head that a HSI was an attitude indicator and then wasn't sure what the attitude indicator was, got muddled up
Sorry brain fart! i had it in my head that a HSI was an attitude indicator and then wasn't sure what the attitude indicator was, got muddled up
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No problem, we all get those from time to time.
I guess it can be confusing, since both can be displayed on a single screen. In most cases it would be separate screens for redundancy, with some sort of composite mode if one screen should fail.
I guess it can be confusing, since both can be displayed on a single screen. In most cases it would be separate screens for redundancy, with some sort of composite mode if one screen should fail.
