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VMCG vs VMCA on the 747

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South Asia and Far East Wannabes A forum for those applying to Cathay Pacific, Dragonair or any other Hong Kong-based airline or operator. Use this area for both Direct Entry Pilot and Cadet-scheme queries.

VMCG vs VMCA on the 747

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Old 8th Mar 2005, 18:15
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VMCG vs VMCA on the 747
why is VMCG higher than VMCA on the 747.Thanks
roughrider is offline  
Old 8th Mar 2005, 18:26
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RR,

It is my understanding that Vmcg is higher than Vmca on the 747 due to the moment arm from the main gear to the rudder being shorter than from the CofG to the rudder. Also once airborne the aircraft has the added assistance of five degrees bank into the live engine also reducing Vmcg to below Vmca.
Hope this helps.
grind king is offline  
Old 8th Mar 2005, 20:08
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Turning point in the air is around the C of G and the turning point on the ground is around the main gears. I believe the above post explained the rest.
Medwin is offline  
Old 9th Mar 2005, 01:44
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what's VMCG mean?
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Old 9th Mar 2005, 02:31
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It's Velocity minimum Controllable, one engine inop. but on the ground.
Canadian Beech is offline  
Old 9th Mar 2005, 23:15
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Oh, I see, A for Air and G for Ground

thanks CB
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