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Old 9th Nov 2016, 19:41
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AR

My nephew treated me to a sim ride in the KC10. What a treat. I forgot to ask at the time, but why, when I was a little right of the centerline on the belly of our tanker, my instructor told me to input some right roll to get left, back to alignment? (We were receiving a refill).
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Old 11th Nov 2016, 09:46
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Cool, sounds like fun
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Old 9th Aug 2017, 21:52
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Does the KC10 exhibit noticeable adverse yaw?, I don't know, but it would explain the instruction.
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Old 17th Aug 2017, 21:35
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Flown the 10 for a few hours (IP) and can only think it is to either stop a bit of PIO (moving left and right but having trouble stopping astern) or to shack your position once you've moved back to the centreline from out to the right. There was always a natural (if AAR can be callled such) push back towards the centreline if you wandered too far out to the side, and you would need to stop that movement when you approach the centreline in this case. And refuelling behind a 135 was always the devil's work!😰
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Old 18th Aug 2017, 08:51
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Originally Posted by VigilantPilot View Post
...generally a new guy would end up in a PIO by trying to roll wings towards the centre position again. For a brand new guy behind a tanker this usually ended up in a comically divergent PIO.
Poor instruction? At EFT, we teach "bank ON, bank OFF" when adjusting lateral spacing formating behind another aircraft. The temptation is normally to maintain a roll input for too long thus precipitating a PIO so the bank ON/OFF technique usually negates this but as I have no experience of flying one heavy behind another, I'm not sure if this technique would be relevant. But it's what we teach.
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Old 18th Aug 2017, 13:18
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Originally Posted by just another jocky View Post
Poor instruction? At EFT, we teach "bank ON, bank OFF" when adjusting lateral spacing formating behind another aircraft. The temptation is normally to maintain a roll input for too long thus precipitating a PIO so the bank ON/OFF technique usually negates this but as I have no experience of flying one heavy behind another, I'm not sure if this technique would be relevant. But it's what we teach.
Standard techniques would probably work in theory but couple engine wake from the tanker and no powered roll controls and it becomes a different ballgame in practice.
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Old 18th Aug 2017, 21:22
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The aerodynamic effects of the tanker tend to push the receiver towards the centre of the boom envelope. When your nephew says to use some right roll input to correct from a right-of-centre position, he is basically saying 'don't use left roll input'. Rolling left would initiate a PIO; centralising the yoke can do the same. Better, when right of centreline, to reduce the right roll input a little, stabilize, then reduce a little more.
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