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#1
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Crosswind components
Can someone offer a non-mathematical EXPLANATION (as opposed to
DESCRIPTION) of why the speed of headwind and crosswind components of a wind add up to more than the speed of the wind? Thanks. |
#2
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"James L. Freeman" wrote in message om... Can someone offer a non-mathematical EXPLANATION (as opposed to DESCRIPTION) of why the speed of headwind and crosswind components of a wind add up to more than the speed of the wind? The same reason the opposite and adjacent sides of a right angle triangle add up to more than the hypotenuse. I guess that's mathematical, but it is an explanation... Regards Andrew |
#3
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You shoulda stayed awake during trigonometry...
MikeM James L. Freeman wrote: Can someone offer a non-mathematical EXPLANATION (as opposed to DESCRIPTION) of why the speed of headwind and crosswind components of a wind add up to more than the speed of the wind? Thanks. |
#4
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"James L. Freeman" wrote in message
om... Can someone offer a non-mathematical EXPLANATION (as opposed to DESCRIPTION) of why the speed of headwind and crosswind components of a wind add up to more than the speed of the wind? For the same reason that it's a shortcut if you can walk diagonally from one corner of a city block to the opposite corner, rather than following the roads around the block. --Gary Thanks. |
#5
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It's because they are separate definitions of the crosswind and are not
additive. -- B-58 Hustler History: http://members.cox.net/dschmidt1/ - "James L. Freeman" wrote in message om... Can someone offer a non-mathematical EXPLANATION (as opposed to DESCRIPTION) of why the speed of headwind and crosswind components of a wind add up to more than the speed of the wind? Thanks. |
#6
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Because wind has speed and direction. You cannot just add the numbers
to get the total. You have to do a vector sum (considering direction and speed). (James L. Freeman) wrote in message . com... Can someone offer a non-mathematical EXPLANATION (as opposed to DESCRIPTION) of why the speed of headwind and crosswind components of a wind add up to more than the speed of the wind? Thanks. |
#7
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#8
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That's simple - it's a vector sum. But can someone explane this to me:
Scenario One An aicraft is flying from A to B, TAS=200 Kts, Distance AtoB=100nm, Wind blowing from B to A with a speed=100Kts Everyone should be able to claculate that GS(A-B)=100 Kts and GS(B-A)=300 Kts , therefore round trip time A-B-A=60min+20min=1hr20min Scenario Two Same as One, but remove the wind completely. The GS in both cases = 200 Kts, therefore round trip time A-B-A = 30min+30min = 1hr Can someone explain the difference? "James L. Freeman" wrote in message om... Can someone offer a non-mathematical EXPLANATION (as opposed to DESCRIPTION) of why the speed of headwind and crosswind components of a wind add up to more than the speed of the wind? Thanks. |
#9
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arcwi wrote:
Can someone explain the difference? You spend more time in headwind than in tailwind. Stefan |
#10
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Yes, but the common logic suggest that you also spend less time in tailwind
that in head wind - and if there is no wind the two should cancell each other... Or should they... "Stefan" wrote in message ... arcwi wrote: Can someone explain the difference? You spend more time in headwind than in tailwind. Stefan |
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