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### Why don't turboprop planes have push engines that use thrust more effectively? [duplicate]

The Piaggo P-180 is one of the fastest private planes out there and uses the push system.
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### What are the factors considered while placing a propeller on a plane? [duplicate]

I have read the post where it describes about the push and pull configurations of the engine, advantages/dis-advantages in them but not the purpose. I have seen images of a figter where the ...
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### Would propellers be more efficient if they were mounted at the rear of the aircraft? [duplicate]

The propellers of a front-mounted propeller plane push air back directly on a collision course with the aircraft's body. That results in zero thrust or negative thrust from at least some sections of ...
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### Why are military drones shaped so strangely?

Military drones, such as the Predator drone or the Global Hawk, tend to have a weird shape with a whale-like head, and engines concentrated at the back. The wings tend to be of very high aspect ratio, ...
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### Has a fixed-wing aircraft ever been built that featured multiple turbines powering a single propeller?

Has a fixed-wing aircraft ever been conceived, prototyped or built that features multiple turbines powering a single propeller? The concept of a twin-engine aircraft with a single propeller is ...
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### What are the reasons behind this pusher propeller configuration?

Can a pusher configuration sort of like this have its propeller close to the tail (if it were one of those split tails like on a A-10)? Why did they put the propeller above the cabin and not in ...
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### Could turbine or compressor stages of a jet engine be switched off to improve fuel efficiency?

Active fuel management is a technology developed by General Motors, which is used to improve engine efficiency in the times when the engine is operating under loads which are considerably less than ...
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### Is there anything wrong with this more symmetric aircraft design, and why isn't it used?

I imagine a fixed wing airplane design that's a lot more symmetric than what I see today. This symmetric design has wings in the middle of the fuselage (neither high wing nor low wing), and the ...
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### What are the differences in aircraft performance between tractor and pusher propeller designs?

Some aircraft have pusher type propellers. In what ways is it different from a tractor type propeller? What's are the advantages and disadvantages over a tractor type.
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### Can wing-tip vortices be reduced/eliminated with a rear-facing propeller near the wing-tip?

Let's say we have a propeller-driven aircraft in the pusher configuration (rear-facing propellers). If we could somehow put an engine at the wing tip (ignoring structural concerns), and maybe make the ...
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### Why do helicopters typically have blades at the top?

This question has several great answers showing that it's perfectly possible for a helicopter to fly with its blades underneath the rest of the aircraft. There are some obvious issues with having a ...
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### Is 1 propeller always more efficient than 2?

Based on other answers I've read here (1) (2) (3), a single large blade propeller is the most efficient type of thrust you can get. There are 2 reasons for this (as I understand it). Firstly, ...
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### Which 'pusher' propeller aircraft have been used in active military service?

The only 'pusher' aircraft I know of that has been used in active military service is the SAAB 21. There are several prototypes out there, but I can't see that any others were used. Which, if any, ...
Here is a polar for a piston single-engine aircraft: (This is lifted from a Russian manual for Yak-52, so $C_x$ is drag, $C_D$, and $C_y$ is lift, $C_L$). 1 is the 'normal' case without propwash. 2 ...