付肾是什么药
百度 随后，陈磊手感出色投中三记三分，但江苏未能限制对手的发挥，两队分差维持在10分左右。
Questions about the different choices that aircraft designers (typically aerospace engineers) make in order to create an aircraft.
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Why the Lancair speed brakes are so different?
Looking at different airplanes most airplanes with speed brakes have a similar aileron like speed brakes. Why does the Lancair uses this different design instead of the more common ones?
source
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PZL M28 Skytruck exhaust alignment
Watching a short documentary on PZL M28 Skytruck, I noticed it has quite oddly aligned exhaust pipes.
They point almost directly downwards, with only slight aft tilt:
Picture credit: ?ukasz Golowanow ...
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How is this quadcopter so stable with props so close to CG/Fuselage? [migrated]
How can this quadcopter be so stable having its propellers so close to the center CG. Isn't this suppose to affect its balance?
Here is an image with a top and bottom view, you can see how the props ...
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Can a quadcopter do controlled flight after one motor failure?
I'm curious of the performance and/or if/how can a quadcopter recover after one motor failure.
I'm trying to find tests of that but the closest thing I've found is this Jetson One Motor failure test, ...
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General Aviation Accidents caused by a software glitch
Thinking about Lion Air, and Ethiopian Airlines Boeing 737 Max 8 Crashes in Commercial Aviation, I wonder if there has been an accident due to a software glitch on any aircraft in General Aviation.
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How to increase inlet air intake quantity for static thrust?
Other than increasing the inlet total area what other things can you do to increase the total amount of air that gets suck trough an inlet for static thrust?
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Civilian airplanes with inside fuselage jet engines
Like the Stratos 714 inside fuselage engine design, are there any other civilian airplanes examples alike?
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Why not mount airliner jet engines above the wings?
It seems that most airliners put the engines below the wings, i.e. the Boeing 7*7 series and the Airbus A3** series. This requires long (heavy) landing gear, and the engines are close to the ground ...
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Why are new eVTOL aircraft designs use small fans or propellers which have lower lift efficiency than large rotors for VTOL operation?
For VTOL mode of operation, lift efficiency decreases with disc loading (i.e., the ratio of aircraft mass to area swept propeller) This makes large rotors more suitable for VTOL operation than small ...
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Can you yaw an airplane by only using differential thrust?
In a typical twin engine airplane, can one yaw the airplane by only using differential thrust?
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How can this aircraft be stable/maneuverable?
The new wave of electric VTOL aircraft concepts (Joby Aviation, Zee, Lilium, Airbus A$^3$, etc...) has produced some audacious unconventional designs.
Now my question, is how Lilium's concept can be ...
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How does the box wing design reduce drag?
How does the wraparound wing in this AOPA article reduce drag? One would think all that extra leading edge and surface area would make it worse.
One more link also.
The Parsifal Project has produced ...
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What is the difference between a nacelle and a cowling?
I see these terms used almost interchangeably. To my understanding they both refer to the covering of an engine. Is there a technical difference between the two?
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Which is easier to put together: jet VS piston aircraft? [closed]
If you were an aircraft manufacturer of a small 4 seat airplane and you only have to put together all the parts from your suppliers(engine, electronics, fuselage, etc), would an jet aircraft be built ...
- 3,017
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How Antonov An-24/26 control propeller speed
In the An-24/26 aircraft, there is no lever for propeller control. Instead, how is the propeller speed managed in these aircraft?
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