Jump to content

Sign in to follow this  
Guest luvanegra

Airspeed Values 747-400X

Recommended Posts

Guest luvanegra

HiI need some clarification about air speeds.In a flight from Porto to Heathrow I've notest that in the primary Flight Display the Current Airspeed Display was showing a value of 245 knots, at same time in the Navigation Display the values was GS (ground speed) 485 and TAS(true air speed) 474.Well I can understand the difference between GS and TAS but I thought that the Current Air Speed was a value near TAS...I will apreciate some explanation about this..Thanks

Share this post


Link to post

>thought that the Current Air Speed was a value near TAS...Not at all. TAS and Air Speed (IAS = Indicated Air Speed) can differ vastly - the higher you fly the more they will be different. You may do some search here or on google on this very topic - this is a frequent point of confusion for non-pilots.Michael J.http://img142.imageshack.us/img142/9320/apollo17vf7.jpg

Share this post


Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  
×
×
  • Create New...