how much km/h, mph is one knot?

Question

is there a defference between nautical and aerial, plz explain

Answer 1

1 international knot = 1.000 nautical mile/hour = 1.852 km/h exactly.

Conversions
1 (international) knot is exactly equal to 1.852 kilometres per hour (km•h−1), and is approximately equal to the following:

101.268591 feet/minute
1.687810 feet/second
0.5144444 metres per second (m•s−1)
1.150779 mile (statute)/hour (mph)
0.99936 Admiralty knot

[edit] Origin
In some sailing ships, speed was measured by casting the chip log from the stern. The log was relatively immobile, and attached by line to a reel. Some sources suggest that knots placed at a distance of 47 feet 3 inches (14.4018 m) passed through a sailor's fingers, while another used a 28 second sandglass to time the operation. The knot count would be reported and used in the sailing master's dead reckoning and navigation. This method gives a value for the knot of 20.25 in/s, or 1.85166 km·h−1. The difference from the accepted value today is a bit less than 0.02 %.


[edit] Discussion
Because a knot is defined as a nautical mile/hour, the expression "knots per hour" is considered incorrect as a unit of speed, since this suggests 'nautical mile/hour²', which would be a measure of acceleration.

Although knots do not fit within the primary SI system, their retention for nautical and aviation use is important for navigational reasons, since the length of a nautical mile is almost identical to a minute of latitude. As a result, distance in nautical miles on a navigational chart can easily be measured by using dividers and the latitude indicators on the side of the chart.

Answer 2

1 Knot To Km

Answer 3

How Much Is 1 Knot

Answer 4

1 knot is equal to 1 and a 6th mph

Answer 5

As per http://www.Aerospaceweb.org, "The dictionary defines a knot as a unit of speed equal to one nautical mile per hour, where a nautical mile is 6,076.12 ft (1,852 m) in length.".

However, if you are in the air, then the distance over time changes as a result of altitude. so if you are at sea level, the circumference of the earth at the equator is 24,901.55 miles, traveling at 100 knots per hour would take you almost 250 hours to travel; whereas if you are 1000 ft above the ground the circumference is only a bit larger- 24902 miles, and therefore it would take you a minute or so longer to go around at 100 knots than it does at sea level

. A typical jet airliner may fly at an altitude of 30,000 ft above sea level. to travel around the earth at 100 knots per hour at that altitude is 24936 miles and therefore would take you even longer.

I am basing the math from:
Diameter of Earth at equator = 7926 miles
Circumference of Earth at Equator= 24901 miles

(if you search for diameter and circumference of the earth you get 10 different answers so this is a close average between all of them.)

Answer 6

1 knot is equal to 1.15 mph

Answer 7

1 mile = 0.868976242 knots

1 knot = 1.15077945 miles

1 knot = 1.85200 kilometers

1 kilometer = 0.539956803 knots

Answer 8

1 knot = 1 nautical mile per hour. No difference between nautical and aircraft.

1 knot = 1.15 miles/hour (1 nautical mile = 1.15 miles)
1 knot = 1.85 kilometres/hour (1 nautical mile = 1.85 kilometres)

Answer 9

A 'knot" is a nautical mile, and that is 1 nautical mile = 6076 ft as compared to the US mile which is 5,280 feet. When you get into aerial, it gets even more complicated. See http://www.flightsimdownloads.com/support/airfile.htm for some of the considerations for flight.

Answer 10

Depends on the length of the lace.

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