0
Indicated airspeed compared to ground speed are different due to the movement of air (winds) around the aircraft.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How is speed measured in airplanes?
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)
What is the difference between true airspeed and groundspeed?
Airspeed is speed with respect to the air, i.e. speed through the air. Groundspeed is speed with respect to the ground, i.e. speed over the ground. It's the vector sum of airspeed and windspeed.
what is a word for a jet speed measure?
Airspeed
What instrument measures the speed of an airplane?
In aviation, the dial you look at to read your speed through the air is known as an IAS dial (indicated air speed). This dial is an indiaction only, as it works by measuring the amount of air entering the measuring tube (Pito tube); ergo a large head wind (blowing into the front of the aircraft) will give a higher indicated air speed than may actually be true.ias dial
Does a car and airplane have the same speed?
Not sure if I understand the question but let me guess.Aircraft (and ships) use a term for their speed that is called knots. This is another value of measuring speed and is close to the miles per hour value.Aircraft also use the term Mach Number. This value represent the speed of sound or the percent of Mach 1.---car speed is always measued in ground speed, or its speed in relation to the ground - plane speed is measured several ways but mostly it is in realtionship to the air, or air speed - a plane traveling at an airspeed of 60 mph flying into a headwind of 60 mph (common at very high altitude) has a ground speed of 0 mph or is actually standing still!
What is the limitation of the airspeed indicator?
some V speeds are not indicated, It doesn't show true airspeed or ground speed.
How is speed measured in airplanes?
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)
How do you read a aircraft speedometer?
The speedometer of an aircraft measures air speed - that is, is measures the speed of the air going past the aircraft. Airspeed is measure in KIAS - Knots-Indicated Airspeed. There is a method of converting KIAS to true airspeed and ground speed, but, on the subject of ground speed, this is usually done simply by using GPS and LORAN equipment on board, or readings from ground radar units.
What is the difference between true airspeed and groundspeed?
Airspeed is speed with respect to the air, i.e. speed through the air. Groundspeed is speed with respect to the ground, i.e. speed over the ground. It's the vector sum of airspeed and windspeed.
What indicated airspeed should be selected for a particular altitude?
Basically, there are indicated, true and ground speeds. Indicated airspeed takes air pressure differences from a sensor, corrects for pressure altitude (altitude adjusted for barometric pressure) and for temperature to determine true airspeed (speed through the ocean of air). True airspeed is adjusted for winds to get ground speed. There are many factors to consider when selecting a particular air speed. For a particular airplane, fuel efficiency generally decreases with airspeed. Increased airspeed places more demands on piloting skills. If you know all the factors, you can determine the indicated of airspeed in the cockpit. Conversely, if the factors are known, ground speed can be determined from indicated airspeed. Winds aloft, which often change with altitude, are a bigger factor for small planes than for large commercial aircraft on a schedule. For fuel efficiency reasons, when experiencing a tailwind, use a lower indicated airspeed. Conversely, when in a headwind, use a higher airspeed. Either the benefits are greater or the penalty is not as severe when wind is considered. Look at it this way. You would like to stay in a tailwind to get that free push as long as possible, so, fly slower. Different airplanes have different fuel efficiency with airspeed characteristics so the optimum airspeed would vary with the airplane, the priorities of schedule, fuel efficiency and safety as well as weather conditions. Indicated airspeed decreases with altitude, so an altitude correction must be used to get the true airspeed as well as a temperature correction (it gets colder up there). They say speed is money. How fast do you want to go? So, it is a trade off among competing factors.
What is the difference between airspeed and ground speed?
YOU HAVE TO BE KIDDN ME RIGHT?
A plane headed due E is traveling at airspeed of 190 mph The winds are moving with constant speed in the direction 240 degrees If the ground speed of the plane is 95mph what is the speed of the winds?
To find the speed of the winds, we can use the concept of vector components. The ground speed of the plane (95 mph) is the result of the vector sum of the airspeed of the plane (190 mph) and the speed of the winds (w mph). We can find the horizontal component of the airspeed by multiplying 190 mph by the cosine of the angle between the airspeed and the ground direction (240 - 90 = 150 degrees). Thus, the speed of the winds is 70 mph.
What is the stall speed of a Cessna 172?
In landing configuration (full flaps), the stall speed is 40 knots (indicated airspeed). With flaps up it is 48 knots.
Dose airspeed around an airplane wing change in constant airspeed if the airplan is with headwind or tailwind?
No. 'Airspeed' is the airplane's speed relative to the air. 'Headwind' and 'tailwind' ... in fact, 'wind' in any direction ... is the speed of the air relative to the ground, which the airplane doesn't feel. So 'wind' affects only the craft's groundspeed, not its airspeed.
What travels faster airplanes or speed of sound?
The speed of sound does not travel. In the event that an airplane's airspeed is below Mach-1, the speed of sound is faster than the speed of the airplane. On the occasion and at the moment when the true indicated airspeed of an airship or an airplane is in excess of Mach-1, the airplane is at that time traveling faster than the speed of sound.
What does the air speed indicator do?
An air speed indicator gives an indication of the speed of the air going across the wing surface. It's not a reflection of equivalent ground speed, as one's airspeed is subject to headwinds and such. However, before LORAN-C and GPS, it was the only real method of measuring any sort of speed. One could make an estimation of their ground speed based on airspeed.
What is an airspeed?
An airspeed is the speed at which an aircraft is travelling relative to the air through which it is flying.
