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Questions about the different choices that aircraft designers (typically aerospace engineers) make in order to create an aircraft.

2 votes

Why are push-propellers so rare, yet they are still around?

One category of aircraft that almost universally uses pusher props is the autogyro. Typically the engine is mounted in the centre of the craft, with the cockpit immediately forward, the rotor above, …
Chromatix's user avatar
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1 vote

Why don't planes have a reverse propeller as air brakes?

Most jet airliners and some propeller-driven aircraft (chiefly those designed for short-field operations) do in fact have some sort of thrust reversal system already. There is no need for an extra en …
Chromatix's user avatar
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2 votes

Why are geodesic airframes no longer produced?

As other answers already note, the major attraction of geodetic framing was to provide a lighter and stronger structure than internal framing, with the not inconsiderable bonus of leaving much more in …
Chromatix's user avatar
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0 votes

Would a two-seat light fixed-wing aircraft with a landing speed of 20 knots and a top speed ...

The Westland Lysander was a WW2-era aircraft with about your requested top speed and with a reputation for excellent STOL performance, though its stall speed is actually about 60kt. It was used for i …
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6 votes

Would a two-seat light fixed-wing aircraft with a landing speed of 20 knots and a top speed ...

The Dornier Do-29 seems like a really good contender. It's a tilt-rotor type, which could swivel its engines downwards to improve STOL performance down to a mere 15kt stall speed. Its maximum spee …
Chromatix's user avatar
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2 votes

Is there a good reason why modern airliners can't have conventional landing gears (vs. tricy...

It is perhaps worth looking at where the main (load-bearing) gear is located on today's airliners - bearing directly on the wing root, which is the structurally strongest part of the aircraft - and wh …
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2 votes

How heavy is too heavy to land on a grass strip?

The operative term to look up here is ground pressure. This is simply the force required to support the object divided by the area that force is spread over. You can reduce the ground pressure of an …
Chromatix's user avatar
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