by a giant propeller or a wet thumb
barometer
Was messured at 127 mph (drag limited) by car & driver magazine 1999. Ive had mine up to around that speed.
The speed is messured in knotsAirspeed in measured in Knots. It is generally measured by a small intake on the aircraft that measures the speed that air enters at. This measurement is know as indicated airspeed. The thing to remember is that indicated airspeed differs from ground speed as it takes into account wind speed. For example, an aircraft is flying at 110knots ground speed into a 10knot wind so it's indicated airspeed would be 120knots (110+10)
An anemometer is used for measuring the speed of wind,
Kyosho DBX 2.0 out of the box 60km\h 0-60km\h takes 5sec messured with Gps
No. A wind vane is an instrument that can tell wind speed but not wind direction.
The current wind speed on the wind speed chart is 40 kilometers per hour.
wind speed = squrt(u^2+v^2).
An anemometer measures the wind speed, and a windvan measures wind direction.
Wind speed is measured with an anemometer.
By the types of sails that you have. or it could be the wind type or the wind's speed
The wind direction is measured with wind vanes or wind socks. The wind speed is measured with an anemometer.