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-   -   MPH vs Kts (https://vansairforce.net/community/showthread.php?t=145521)

flytoboat 01-08-2017 05:07 PM

Not that's hilarious! Mel, you made my day!

Quote:

Originally Posted by Mel (Post 1140277)
I know I've mentioned this before but I fly from the left seat and Ann flies from the right. I have everything set up in kts. and nautical miles on my side of the plane and she has everything set up in statute miles on her side. She goes a little faster than me but she has farther to go so we usually get there about the same time.


Robert Anglin 01-08-2017 05:14 PM

Quote:

Originally Posted by Mel (Post 1140277)
I know I've mentioned this before but I fly from the left seat and Ann flies from the right. I have everything set up in kts. and nautical miles on my side of the plane and she has everything set up in statute miles on her side. She goes a little faster than me but she has farther to go so we usually get there about the same time.

That just means she is a lot younger than you. As we all used to fly airplanes that were in Sm./ Hr. when we were younger. Now that it has been a while and we are getting much older we fly in airplanes that are in Kts. / Hr. Shame on you for slowing down on a young lady that is still up to a younger speed. You should treat her better than that. TEXAS always, no mater where you are, it is still an act of love. Yours Robert

Mel 01-08-2017 05:35 PM

Quote:

Originally Posted by Robert Anglin (Post 1140315)
That just means she is a lot younger than you.

Actually she is older than me. As a matter of fact, tomorrow she will be 3 years older. Then next month I will gain back a year.

Snowflake 01-08-2017 06:15 PM

I know I should use Knots, but I still use Miles on my D10A because I like that occasionally I break 200. If i'm indicating in Knots and that happens, there's something wrong...

Of course, I leave my GPS reading in km/h, because the passenger can see it easier than the D10A in front of me... And flying along at 300+ is way more impressive... :)

az_gila 01-08-2017 06:46 PM

Quote:

Originally Posted by RV7A Flyer (Post 1140308)
Ah, but the *meter* was defined as being 1/10,000,000 of the distance from the equator to the pole :)

Someday I'm going to figure out how to set up an aircraft to have things like RPM replaced by rad/s, angle of attack in radians, etc. LOL!

Yes, the French dudes in 1791 who set the N pole to Equator distance at 10,000 km (or 10,000,000 metres) were quite a bit more accurate.

They were only out by 2 Km. :)

RV7A Flyer 01-08-2017 08:22 PM

Quote:

Originally Posted by az_gila (Post 1140336)
Yes, the French dudes in 1791 who set the N pole to Equator distance at 10,000 km (or 10,000,000 metres) were quite a bit more accurate.

They were only out by 2 Km. :)

There's always my physics prof's favorite units...furlongs per fortnight. :) He claimed that if you used furlongs/slugs/fortnights, all the physical constants in the universe ended up being close to 1.0 X 10^something. LOL! (We never checked his math on that, though ha ha!).

dutchroll 01-09-2017 07:27 PM

Quote:

Originally Posted by az_gila (Post 1140180)
The "days long gone by" date back about four decades...:)

In the mid 1970's GAMA (General Aviation Manufacturing Association) recommended all manufacturers standardize on knots and so most but not all switched (Maule for example still to this day uses MPH calibrated airspeeed indicators).

My 1977 Tiger was made in the first year the factory switched from mph to knots on the ASI and placards.

I still remember when we switched to metric down under in the 70s (except for aviation where we use ICAO units - knots, ft for altitude, etc). There was the pre-requisite bitching and moaning but everyone pretty much got used to it eventually.

I'm tri-lingual. More than comfy with the metric system for most of my life but also speak in imperial measurements on occasion if required, and of course "nautical" language too. The only thing I've never quite got my head around is degrees F. Oh.......and the drill gauge numbering system. My head makes much more sense of an actual dimension (inches or mm doesn't really matter) than a kinda random number assigned to it! :D

az_gila 01-09-2017 10:50 PM

Quote:

Originally Posted by RV7A Flyer (Post 1140357)
There's always my physics prof's favorite units...furlongs per fortnight. :) He claimed that if you used furlongs/slugs/fortnights, all the physical constants in the universe ended up being close to 1.0 X 10^something. LOL! (We never checked his math on that, though ha ha!).

Perhaps Vans should switch to the furlongs/fortnight for sales literature?

The faster RVs would be 8,400 furlongs/fortnight :)

RV7A Flyer 01-09-2017 11:48 PM

Quote:

Originally Posted by az_gila (Post 1140695)
Perhaps Vans should switch to the furlongs/fortnight for sales literature?

The faster RVs would be 8,400 furlongs/fortnight :)

I hope they're faster than that :)

Quickie on-line conversion tool says 170 kts = 525859 furlongs/fortnight! Impress your friends: "This plane goes over half a million furlongs per fortnight! And it only weighs about 35 slugs!"

az_gila 01-10-2017 12:03 AM

Quote:

Originally Posted by RV7A Flyer (Post 1140700)
I hope they're faster than that :)

Quickie on-line conversion tool says 170 kts = 525859 furlongs/fortnight! Impress your friends: "This plane goes over half a million furlongs per fortnight! And it only weighs about 35 slugs!"

Correct... I have to give up late night calculating. I screwed up the 8 furlongs per mile bit.

I didn't even think of looking for an on-line calculator that spoke furlongs/fortnight...:)


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