Welcome Guest. Sign in or Signup

2 Answers

Ground speed is True Airspeed corrected for?

Asked by: 5934 views General Aviation

is it ....
a)Position error 

b)Density altitude 

c)Wind  

d)Altitude

i dont understand it ? its one of my exam questiosn but i dont get it?

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

2 Answers



  1. Lucas on May 21, 2012

    c) Wind
    Indicated is the one indicated by the instrument and is the one you use when ATC assigns you, for example 100kt
    Calibrated is indicated corrected for position error of the pitot tube.
    Equivalent is calibrated corrected for compressibility error (It really only concerns you if you fly over 200 kt, so don’t worry).
    True airspeed is equivalent corrected for temperature (and this is the speed at which the airplane flies through the air).
    And finally Ground speed is true corrected for wind (the speed the aircraft has across the ground).
    For information on this and many other test questions check out http://www.passfaaexams.com
    Lucas

    +2 Votes Thumb up 2 Votes Thumb down 0 Votes



  2. Derek Schwalenberg on May 21, 2012

    TRUE airspeed is your actual speed relative to the air. The air is always moving. If you are standing fixed to the ground you feel that as wind. If you are in an airplane you will always be moving relative to the air. Imagine a balloon with no propulsion. Its airspeed always reads zero. Its groundspeed is the same as the wind speed. If its a 10kt wind than the balloon travels at 10kts. With an airplane you can fly into the wind, or away from it, parallel, etc.. We always land into the wind because it makes our groundspeed the lower for the same airspeed, reducing the chance of bouncing and/or wear on the landing gear system. If we are cruising, however, we might go to higher altitude if we have a tailwind to take advantage of the (usually) higher winds aloft so our groundspeed is even higher than our airspeed.

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes


The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.