Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Do heavy planes really consume more fuel?

maxkang · 05-01-2016, 02:10 AM

Thanks for the reply.

I can understand every point except that heavier planes HAVE TO fly at high AOA. Why can't they simply operate at faster speed with the same or a smaller AOA? Provided that you have increased a reasonable amount of thrust so that you still get an optimum efficiency, isn't it possible for you get to the destination faster if you flew faster? so you would just have to shut off the engine immediately and the required amount of lift will be still achieved as you have increased the speed.(Lift being almost proportional to the square of speed)

05-01-2016, 02:10 AM	#5 (permalink)
maxkang EcoModding Lurker Join Date: Apr 2016 Location: canada Posts: 8 Thanks: 2 Thanked 2 Times in 2 Posts	reply Thanks for the reply. I can understand every point except that heavier planes HAVE TO fly at high AOA. Why can't they simply operate at faster speed with the same or a smaller AOA? Provided that you have increased a reasonable amount of thrust so that you still get an optimum efficiency, isn't it possible for you get to the destination faster if you flew faster? so you would just have to shut off the engine immediately and the required amount of lift will be still achieved as you have increased the speed.(Lift being almost proportional to the square of speed)