Cars & Transportation: Aircraft: “Question: How does the Automatic directional finder on an aircraft find direction?” plus 5 more |
- Question: How does the Automatic directional finder on an aircraft find direction?
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- Question: Is it true that the A330 is more stable than the 767 or 777 when it lands because of the wings' size ratio?
- Question: If you are 777 F/O for about 10 years and your airline has 50 planes of the type, how often you will fly with the same captain?
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| Question: How does the Automatic directional finder on an aircraft find direction? Posted: 19 Aug 2016 05:23 AM PDT ADFs are medium frequency receivers, spanning the band from 200 KHz to about 1600 KHz. There are actually two antennas for it but modern ADFs integrate the sense antenna in the loop antenna housing. From there the details vary somewhat, but the effect is that of the old systems (like the venerable Lear ADFs) where a loop antenna was actually rotated to look for the null when the loop is end-on to the signal. The sense signal is mixed to reduce the number of nulls from two to one. ADFs point to the radio station, letting the navigator work out position and course for themselves.  |
| Posted: 19 Aug 2016 05:04 AM PDT Report AbuseAdditional Details |