air speed - ترجمة إلى اليونانية
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air speed - ترجمة إلى اليونانية

SPEED OF AN AIRCRAFT RELATIVE TO AIR
Air speed
  • An [[airspeed indicator]] is a [[flight instrument]] that displays airspeed. This airspeed indicator has standardized markings for a multiengine [[airplane]].
  • Aircraft have [[pitot tube]]s for measuring airspeed.
  • knots]] (kn) and [[miles per hour]] (mph). The pilot sets the pressure altitude and air temperature in the top window using the knob; the needle indicates true airspeed in the lower left window.

air speed         
ταχύτητα αέρα
air speed indicator         
INSTRUMENT USED IN AN AIRCRAFT TO DISPLAY THE CRAFT'S AIRSPEED, TYPICALLY IN KNOTS, TO THE PILOT
Airspeed Indicator; Air speed indicator; Airspeed meters
ταχύμετρο [αερ.]
speed limit         
  • Historic [[New Hampshire]] speed limit sign
  • End of 30 km/h speed limit; previous speed limit applies.
  • Digital speed limit sign for variable speed limits
  • [[Gatso]] speed camera
  • Traffic signals showing an advisory speed limit
  • Maximum speed limits by country in Europe in km/h (and their matching highway signpost color)
  • In France towns and city signs imply the speed limit of an urban road, by application of the Vienna Convention. For this reason the 50 sign on the picture is just a ''rappel'' (continuance of an existing speed limit).
  • Typical speed limit sign that one would see at the Montana state line from December 1995 to June 1999
  • [[Traffic calming]] can be effective on lower speed roads.
  • The [[Pan-American Highway]] with central median and no freestanding obstructions increasing the level of safety at high speed
  • A stack of rectangular speed limit signs in the United States
  • km/h}} for ordinary vehicles applies beyond this sign.
  • Example variable speed limit sign in the United States, in mph
  • none known}}
  • Speed limit sign in [[Germany]], showing a 60 km/h restriction in [[DIN 1451]] font. Signs in other European countries are similar but make use of different fonts and sizes.
  • access-date=2007-10-28}}</ref>
MAXIMUM LEGAL SPEED OF VEHICLES
Speeding; Speed limits; Speed Limit; 30 mph; Suggested Speed Limits; Speed restriction; Variable speed limit; Speed limit sign; Road speed limit; Speed sign; Speed Sign; Speed-limit
όριο ταχύτητας

ويكيبيديا

Airspeed

In aviation, airspeed is the speed of an aircraft relative to the air. Among the common conventions for qualifying airspeed are:

  • Indicated airspeed ("IAS"), what is read on an airspeed gauge connected to a Pitot-static system;
  • Calibrated airspeed ("CAS"), indicated airspeed adjusted for pitot system position and installation error;
  • Equivalent airspeed ("EAS"), calibrated airspeed adjusted for compressibility effects;
  • True airspeed ("TAS"), equivalent airspeed adjusted for air density, and is also the speed of the aircraft through the air in which it is flying.

Calibrated airspeed is typically within a few knots of indicated airspeed, while equivalent airspeed decreases slightly from CAS as aircraft altitude increases or at high speeds.

With EAS constant, true airspeed increases as aircraft altitude increases. This is because air density decreases with higher altitude.

The measurement and indication of airspeed is ordinarily accomplished on board an aircraft by an airspeed indicator ("ASI") connected to a pitot-static system. The pitot-static system comprises one or more pitot probes (or tubes) facing the on-coming air flow to measure pitot pressure (also called stagnation, total or ram pressure) and one or more static ports to measure the static pressure in the air flow. These two pressures are compared by the ASI to give an IAS reading.

أمثلة من مجموعة نصية لـ٪ 1
1. Cockpit gauges, including air speed indicators and horizontal situation indicators, will be sold along with lower–tech paraphernalia like a cabin oven or plate–and–silverware sets.
2. Cockpit gauges, including air speed indicators and horizontal situation indicators, are being sold along with lower–tech items such as a cabin oven, plate–and–silverware sets, and even a Concorde toilet seat.
3. Smartly dressed, the brave soldier poses for a forces picture The artefacts – including the parachute ripcord pull that Sqdn Ldr Duke was still clutching after he bailed out of his flak–damaged Spitfire over Lake Bracciano, Italy in 1'44, and the original US Air Force "dome" flying helmet worn by him in his World Air Speed Record flight in September 1'53 when he took the record from the Americans – went under the hammer at Dix Noonan Webb in Mayfair, London.