Search results
Results from the WOW.Com Content Network
Standard gauge VLocity services on the Albury line began on 30 December 2021, [92] while V/Locity services to Shepparton began revenue services from 31 October 2022. [ citation needed ] and VLocity services to Warrnambool began from 1 November 2024 with all Warrnambool services to be using VLocity sets once the upgraded stabling facilities at ...
In these kinds of measurements, the most practical instrument to use is the pitot tube. The pitot tube can be inserted through a small hole in the duct with the pitot connected to a U-tube water gauge or some other differential pressure gauge for determining the flow velocity inside the ducted wind tunnel. One use of this technique is to ...
The rectangular hyperbola xy = 1 can be used to gauge velocities (in the first quadrant). Zero velocity corresponds to (1, 1). Any point on the hyperbola has light-cone coordinates (, ) where w is the rapidity, and is equal to the area of the hyperbolic sector from (1, 1) to these coordinates.
A hodograph is a diagram that gives a vectorial visual representation of the movement of a body or a fluid. It is the locus of one end of a variable vector, with the other end fixed. [1] The position of any plotted data on such a diagram is proportional to the velocity of the moving particle. [2] It is also called a velocity diagram.
The airspeed indicator (ASI) or airspeed gauge is a flight instrument indicating the airspeed of an aircraft in kilometres per hour (km/h), knots (kn or kt), miles per hour (MPH) and/or metres per second (m/s). The recommendation by ICAO is to use km/h, however knots (kt) is currently the most used unit.
The limiting case of the Venturi effect is when a fluid reaches the state of choked flow, where the fluid velocity approaches the local speed of sound. When a fluid system is in a state of choked flow, a further decrease in the downstream pressure environment will not lead to an increase in velocity, unless the fluid is compressed.
A speedometer or speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. Now universally fitted to motor vehicles , they started to be available as options in the early 20th century, and as standard equipment from about 1910 onwards. [ 1 ]
Airspeed indicator diagram showing pressure sources from both the pitot tube and the static port The pitot–static system obtains pressures for interpretation by the pitot–static instruments. While the explanations below explain traditional, mechanical instruments, many modern aircraft use an air data computer (ADC) to calculate airspeed ...