Quote:
Originally Posted by KNS
True but pistons have far cheaper operating costs. Possibly one of the reasons direct operating costs are so low.
Even the ancient B-36 with piston engines had a service ceiling of 45,000 ft.
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but not 60 000.. thats what they say it will fly at.
and have you seen the hp numbers and diameter of them b36 props?
and are you sure that a prop. reduction gear and variable pitch prop system is lower maint then a turbine???