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XLeratorDB/engineering Online Documentation

SQL Server function to convert speed to knots


KNOTS
 
Updated: 01 December 2008 

Use KNOTS to convert from feet per hour, feet per minute, feet per second, inches per second, kilometers per hour, knots, miles per hour, miles per minute, miles per second, meters per second, meters per minute, or meters per hour to knots.
Syntax
SELECT [westclintech].[wct].[KNOTS] (
  <@Speed, float,>
 ,<@From_scale, nvarchar(4000),>)
Arguments
@Speed
is any real number. @Speed is an expression of type float or of a type that can be implicitly converted to float
@From_scale
is the description of the units for @Speed. @From_scale must be a valid value as specified in speed unit representations@From_scale must be of a data type that is implicitly convertible to varchar.
 
Return Types
float
Remarks
·         The following table is a representation of the conversion of one of the speed units of measure into knots:
feet per hour
0.000165
feet per minute
0.009875
feet per second
0.592484
inches per second
0.049374
kilometers per hour
0.539957
knots
1
miles per hour
0.868976
miles per minute
52.13857
miles per second
3128.314
meters per second
1.943844
meters per minute
0.032397
meters per hour
0.00054
 
·         Conversion of meters includes all the standard prefixes with kilo representing 1,000 and yocto representing 10E-24.
Example
 
select wct.KNOTS(10, 'm/s')
Here is the result set
----------------------
19.4384449
 
(1 row(s) affected)


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