Knots vs. MPH

I've noticed some of the planes in FS measure speed in knots, while
others do so in MPH. It actually took me a while to realize this,
because I happen to fly mostly planes that do knots. At first I thought
it was an old plane vs. new plane thing, but even some newer aircraft,
such as the sailplane, use MPH. What's the reason why?




John

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To reply, remove "die.spammers" from address

So who's really in the details, God or the devil?

If you download European or Russian planes you will notice quite a few use
the metric system for their gauges, that is metres for altitude, kph for
speed and litres for fuel.
But guess it will take a few more decades before a US dominated aviation
industry adopts metric standards.

Oscar








"The Lindbergh Baby" <johngrabowski1@die.spammersearthlink.net> wrote in
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Oscar (nomore@junk.mail.biz) wrote:


Uh... kph? Kilometers per hour? That's about as meaningful as miles per
hour when referencing aircraft speed, as most distances in aviation are
measured in nautical mile, not statute mile or kilometer.



--
Peter












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Well, that's the way it is. When I learned to fly back in the sixites the
Cessna 150 hat a Speed Gauge in MPH, the first Glider "Rhoenlerche" had it
in km/h! The latter not being soooo ugly, as all gliding competitions are
referenced to km's. As far as I remember also all older british planes had
Speed Gauges in MPH. Flying in the eastern countries you will notice that
all distances are still in m and km, heights and levels also. But don't
worry as his mixup will exist for the next decade still. But we pilot's are
clever guys, aren't we? So we will cope with that easily......;-)

--
Oskar
(retired captain)
"remember, in the great scheme of things, we're all small potatoes!"

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lonewulf (rengaw@swissonline.ch) wrote:

<snip>

Thanks, of course, to the E6-B slide rule.



--
Peter












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"pr" <nope@nospam.com> wrote in message
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Can't remember the last time I even looked at one of those :-)


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John E. Carty wrote:


As a private pilot who flies a lot of cross country flights with reduced
fuel to accommodate full passenger load, I still find the E6-B
absolutely essential in calculating fuel burn.


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Peter










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The EB-6 calculator!!?? (a.k.a. Wiems Plotter???)

Good Lord. I used one of those in Undergraduate Pilot Training in the good
ol' U.S.A.F back in 1965-66. After reading this message thread I went up in
the attic and 30 minutes later I had an EB-6 in my [dusty] hand. I also
found a Jeppsen battery-operated hand-held calculator that we B-52 pilots
somtimes used. You won't believe this but the two little button batteries
were still good!!! Amazing. That was 30 years ago!!!!! (The calculator was
actually made by Sharp Electronics of Japan (of course) then re-branded by
Jeppsen, then re-re-branded by the U.S.A.F. Surely a collector's item.

Anyway, the issue of MPH vs. KNOTS vs. KPH. Forget the KPH; it's merely
speed in kilometers vs. miles. A knot is one nautical mile/hr or about 1.15
statute miles/hr.

So 145 kts == 145 x 1.15 == 166.75 miles/hr (for example)
or
200 mile/hr == 200 x .87 == 174 kts/hr (for example)

Knots are preferred since a nautical mile is based on one degree of
longitude -- which is the same world-over.

I think!! LOL

Dave Pitzer
CFI/CFII



"pr" <nope@nospam.com> wrote in message
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Disregard last transmission
That should be the E6-B !!! not the EB-6 !!!!!

DP
===========
"Dave Pitzer" <dpitzer@sonic.net> wrote in message
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Welcome to Russia, Descend to 1280 metres and reduce speed to 500 kilometres
and hour. :P