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What was the tactical purpose of the unusual flight control system that allowed the Northrop YA-9 to generate sideforce without banking?

Is it a great tactical advantage to be be able to change the aircraft's heading this way rather than by banking? Does this advantage pertain to air-to-ground gunnery in general, or only to operations ...
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What was the tactical purpose of the unusual flight control system that allowed the Northrop YA-9 to generate sideforce without banking?

This way of controlling the flight path without banking or yawing allows for more direct control of alignment with a ground target: if you need to move sideways to line up on a given target from a ...
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Do airliners reduce their angle of attack to maintain lift = weight as fuel burns off during cruise?

Yes. As fuel is burned the airplane will want to climb, so the autopilot (which is flying the plane 99% of the time and will normally be in altitude hold mode once you're at your clearance Flight ...
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Do airliners reduce their angle of attack to maintain lift = weight as fuel burns off during cruise?

It's almost always more economical to fly higher if you can. So, as an airliner burns off its fuel load, it will naturally want to climb higher, and the pilot will request clearance to do so in stages ...
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