Groundspeed

F

FOD

Well-Known Member
Any other ways to determine groundspeed in flight other then the following:
1. GPS
2. Flight planing
3. E6B- knowing distance and time
 
Hi Im not sure if you want to know other ways to measure distances to divide by the time it takes to fly and find GS,sometimes i use DME or the time to cross two VOR radials if I know the distance to the station [ one- in -sixty rule]
Dont know if this helps
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Most DME units have a groundspeed/time to station feature. It is only accurate if you are going directly to/from a VOR, but it is another way to determine groundspeed.
 
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PFM

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PFM Pink Floyd Meddle (Album)
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PFM Pre-Flight Message
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I'm guessing the last one listed is the one you mean?

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[pretty sad that I had to Google to figure that one out
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have a car drive directly underneath you and keep up. Then ask them how fast they were going.

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Yup, that tecnique is recommended in the AIM and is what the DE is looking for when he asks you to calculate groundspeed.
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