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ynmian
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Posted: Jan 08, 2011 - 10:21 PM
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Enthusiast

Joined: Jan 08, 2011 - 10:04 PM
Posts: 43
Location: KDFW
Status: Offline
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Sponsor
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Posted: Jun 18, 2013 - 11:18 PM
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F-16.net Sponsor
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outlaw162
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Posted: Jan 09, 2011 - 12:43 AM
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Forum Veteran

Joined: Feb 28, 2008 - 02:33 AM
Posts: 968
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Actually their headings are different, almost imperceptibly.
At 400 knots, if the crossing aircraft changes its relative heading only '1 degree' it will generate a relative lateral speed of about 7 knots for the crossing. '1 degree' difference in heading is effectively imperceptible.
They usually do this with a small, momentary stick input in roll, and then level the wings during the crossing maneuver which gives that false same heading appearance. When complete, they will then dip the wing in the opposite direction to realign their heading with the other aircraft.
More exaggerated crossings can be done however, to include a barrel roll type maneuver.
old pilot, OL |
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ynmian
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Posted: Jan 09, 2011 - 01:46 AM
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Enthusiast

Joined: Jan 08, 2011 - 10:04 PM
Posts: 43
Location: KDFW
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thanks outlaw. what have been flying in old days btw.  |
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outlaw162
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Posted: Jan 09, 2011 - 02:50 AM
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Forum Veteran

Joined: Feb 28, 2008 - 02:33 AM
Posts: 968
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I flew trainers & fighters in the military and then civilian transport aircraft.
A long time ago I taught a lot of military student pilots how to fly basic formation, including that basic crossing maneuver.
You asked a good question.
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alphapapaoscaroscarindia
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Posted: Jan 18, 2011 - 01:15 PM
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Joined: Dec 22, 2010 - 10:50 AM
Posts: 45
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Thanks OL.
No rudder input involved at all in this maneouvre then? |
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outlaw162
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Posted: Jan 19, 2011 - 12:44 AM
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Forum Veteran

Joined: Feb 28, 2008 - 02:33 AM
Posts: 968
Status: Offline
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Nope. There is no pilot rudder input required. Flight control systems today may give you a slight automatic rudder deflection during the roll command input to the stick anyway. I doubt you’d be able to detect any rudder movement when establishing a slow, smooth crossing maneuver however.
I think most modern fighters are basically “feet on the floor” aircraft.
“Stick & rudder” has essentially become "computer assisted stick".
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alphapapaoscaroscarindia
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Posted: Jan 20, 2011 - 10:51 AM
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Enthusiast

Joined: Dec 22, 2010 - 10:50 AM
Posts: 45
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| Great ! Thanks for getting back OL ! |
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