A Practical question about MPH, KPH, and knots - Page 2 - ED Forums
 


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Old 11-24-2015, 05:27 PM   #11
cichlidfan
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Quote:
Originally Posted by flanker0ne View Post
I agree, for some extent the submarine simulators, with theyr slowliness, are the "crawl" part of your geographics Situational Awarness.
Using yards/meters for ranging while working with speed and larger distances in nautical miles helps you get used to the translations. Charting helps visualize things as well.
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Old 11-24-2015, 08:57 PM   #12
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A lot of aviation terms are from sailing and the Navy
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Old 11-24-2015, 09:09 PM   #13
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One nautical mile = 1 minute of longitude at the equator. Very useful for navigation.

Knot is used two different ways. One is as a measure of distance. The other as a measure of speed. Usually the context makes it clear which is being used.

1 Knot = 1 nautical mile
1 Knot = 1 nautical mile per hour

Last edited by ajax; 11-24-2015 at 09:11 PM.
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Old 11-24-2015, 10:02 PM   #14
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I've never seen knots used as a measure of distance. In either case, I don't think anyone would advise it.
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Old 11-24-2015, 10:02 PM   #15
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I think with 1.5 you can turn on the external screen info bar when in the cockpit view?? Seem to recall seeing an option for it anyway so people like the OP will be able to do that and not have to worry anymore.
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Old 11-25-2015, 03:21 AM   #16
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Quote:
Originally Posted by Zimmerdylan View Post
Why is the F86's speed measured in knots of all things?? I'm not sure that I understand the whole knot measuring system any way.
Knots are the most common imperial unit of measure for airspeed. I believe all current US military aircraft use knots as well.
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Old 11-25-2015, 04:20 AM   #17
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Quote:
Originally Posted by Corrigan View Post
I've never seen knots used as a measure of distance. In either case, I don't think anyone would advise it.
I don't think it is advised either. However, it is used (albeit incorrectly) as a unit of distance:

It goes on to provide the following definition:… 1 knot = 1 nautical mile/hour = 1.852 km/h exactly. This is based on the internationally agreed length of the nautical mile… …Knot is sometimes mistakenly used to refer to the nautical mile itself, but this is incorrect…

https://blog.globalair.com/post/Orig...ical-Mile.aspx
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Old 11-25-2015, 04:22 AM   #18
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+1 for the "measurement of cockpit" faction.

As a European, I was first confronted with imperial units at the time of my very first flight, erm, games, like F/A-18 Interceptor. Didn't know what it meant, but I developed a gut feeling for knots and feet. It wasn't until years later that I learned how to convert between metric and imperial.

Strangely enough, I currently find it easier to think of altitude in feet, rather than in meters, although I'll gladly argue anyone to death as to the superiority of the metric system.

It's all just a matter of getting used to it, and to a lesser degree a matter of converting units from one system to another.

Finally, there are a few rule of thumb measurements I've mostly learned by dying a lot.
  • 300 kph in the Ka-50 is thiiiiiis close to rotor blade salad
  • 140 kts is waaay to slow for level flight in the A-10C
  • 200 kts is my lowest break-off-attack speed in the F-86
  • 700 kph in the Fw-190 is so fast, it's almost the speed of light (and since nothing can be faster than the speed of light, that's why the aircraft will break apart if you fly any faster)
  • Mach 1.2 is just getting warmed up in the MiG-21
  • 120 kts is really too fast for the Huey
  • 220 to 250 kph is my slowest speed to start a looping in the Black Shark (unless I also fly well above 500 m AGL to compensate for the altitude loss)
  • 30 m AGL just barely qualifies as NOE in the Ka-50
  • 100 ft AGL is pretty damn low in the F-16C (back in Falcon 4.0)

So, as I said, all just a matter of getting used to it.
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Old 11-25-2015, 04:30 AM   #19
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Quote:
Originally Posted by Yurgon View Post
+1 for the "measurement of cockpit" faction.
Same here, it's more immersive IMO. Since all speeds are given in cockpit units, it's better to use them.
Good for the brain too, it stimulates it and improves plasticity
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Old 11-25-2015, 04:49 AM   #20
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Quote:
Originally Posted by PiedDroit View Post
Good for the brain too, it stimulates it and improves plasticity
Very important if you want to keep simming well into your golden years. There are lots of things that we need to remember not to forget!
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