Mignear

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About Mignear

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    Spacecraft Engineer

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  1. Something came to my mind recently, will have to experiment more on my test craft, but its pretty promising for an idea I have. It actually works pretty well to control the aircraft, but unfortunately linking the rotors to the roll axis doesn't let SAS use them to stabilise the aircraft so some control surfaces tied to roll will be needed.
  2. I turned on autostrut on the hinges for my F-14 replica and it works pretty well, though it has a tendency to spawn with the wings stuck due to the autostrutting, restarting the launch fixes this.
  3. From what I remember, the only difference was that the rear rotor was facing backwards with a clockwise rotation(functionally the same as a forward facing rotor set to anti-clockwise). The blades were the default angles(100 authority) except I used the anti-clockwise variant of the blades. Both rotors were set to max RPM and torque. Its unfortunate that the plane in the pictures were an early build that got overwritten with other changes to the rotor blades as I figured things out so we couldn't find out what was going on. I'm quite certain the default angle of the anti-clockwise variant of the blades is different from the default angle of the clockwise variant of the blades, resulting in different top speeds when independently testing the each rotor. When we exceeded the rear rotor's top speed(due to the front rotor having a higher top speed), it started producing negative thrust which is what we see in the pictures. That is the same conclusion I came to during my testing, though I was doing it for another reason, having 1 rotor performing well at low speed and the other rotor performing well at high speed so that acceleration and top speed can be somewhat tuned on a fixed pitch contra-rotating prop setup.
  4. Pretty good. Something I'd add is colored buttons, for things that are toggled on/off, you could have green and red for the button.
  5. The ability for turboshafts to generate electric charge. After all, its an engine that spins a shaft by using fuel, why would it not have an alternator?
  6. A hybrid design seems pretty promising for heavier designs that might want to use turboshafts, so long as you don't intend to balance the rotational torque using another different rotor. Its a shame the turboshaft doesn't generate power.
  7. The turboshaft version, with its full load of fuel, ended up being twice the weight of the electric variant. This introduced the problem of the plane exploding instantly when it touches the runway a little hard on the landing approach. I also went with 4 turboshafts as opposed to the 8 electric rotors on the electric variant, but compensated by giving them 8 propeller blades per rotor instead of 4. Maybe a hybrid might work better.
  8. The joints do work in flight, though putting wings onto the joints means the aero effects on the wings will cause the joints to flex during flight, especially when turning.
  9. More or less completed this, could make the effort to mess with the propeller blade angles for better speed but eh, its in satisfactory range for now. Will work on a turboshaft version for this.
  10. Now that I kind of figured out how to make functional props with my 6 ton Stuka, time for a heavier design.
  11. Can anyone explain what is happening as the speed of the aircraft changes? I have a contra-rotating prop plane and its behaving weirdly. During takeoff, both propellers produce forward thrust. However, at the top speed of around 117 m/s the rear propeller produces backwards thrust On independent testing of the rear propeller, a similar effect happens. It produces forward thrust(and maxes out at the lower top speed of around 104 m/s as opposed to the 117m/s of the whole setup), when I force it to go beyond 104 m/s by diving the rear propeller loses all thrust. On the same test on the front propeller, the same thing happens but at a different max speed. Am I right to presume that the thrust vector flips when you exceed the "top speed" of the propeller? Is there any way to counteract this effect?
  12. Looks great. The wings is the part of the F-4 that I encounter problems with getting it right proportionately, and it looks like you got the wings right.