PPRuNe Forums - View Single Post - Definition of ground speed
Thread: Definition of ground speed
View Single Post
Old 22nd June 2010 | 16:21
  #27 (permalink)  
Tim Zukas
 
Joined: Mar 2000
Posts: 100
Likes: 1
From: Oakland CA USA
"Ground speed. The speed of an aircraft relative to the surface of the earth."

An aircraft that's diving vertically at 500 knots clearly has a speed of 500 knots "relative to the surface of the earth". Is its ground speed 500 knots?
Tim Zukas is offline  
Reply
0