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Vanilla Variable-geometry wing Mig-23 fighter

uploaded by sazabi2001 2 weeks ago

All new design Vanilla Mig-23 with functional variable wing sweep and variable turbine blade pitch. No hidden block no lift fan and no gyroscope. Only 125 blocks, both high/low power mode and high/low speed mode available and carefully balanced with aerodynamic.

The turbine engine has completely redesigned, now blades in the rear just like a real turbo-jet engine. The propulsion comes from the back makes it closer to a real jet-fighter fly characteristic. 4+4 rotors engine give very good power, in fact, low-power mode would be good enough for most fun, high-power mode is kind of stupid. Wing sweep angle associated with engine blade pitch angle, note that Besiege physics don't consider drag of the wing sweep angle (or it has been updated but I have yet to know?), so the speed will come from the engine pitch and the wing geometry gives the center-of-mass shift for better stability in high speed.

Standard 3-way RTC control and retractable landing gears, but have spent a lot of time balancing the aircraft. Elevators automatic compensate roll / torque for sweep angle, turbine rotors are counter-rotation to remove torque. Can't spare extra blocks so the main-wing sections work as ailerons to roll, a small front-wing (work as flap) is included for takeoff.

Arrows for pitch and roll, '[' and ']' for rudder / yaw.
Press'1' (only use 1 rotor per propeller, in toggle mode) engages the low-power mode for normal flying,
When the '1' mode is on, press '2' for high-power mode to engage the second stage rotor (also in toggle mode).
Push '3' for reverse (only in full power).
'<' to decrease wing-sweep angle (low-speed mode), '>' to increase the wing-sweep angle (high-speed mode)
'G' for gears up, 'T' for gears down (landing gear would turn as well).
'F' to engage the flap (takeoff only) and 'R' to disengage it.

Typical takeoff - landing procedure:
1) hold '<' for a few seconds until the wing and turbine blade fully extend (low-speed mode).
2) press 'F' to engage the flap before starting the engine.
3) '1' for low-power, can take-off easily.
4) once the aircraft leaves the ground, press 'R' to disengage the flap, other it would be very difficult to contro.
5) 'G' retract the landing gear, note that landing gear work as counter-weight, so retract them improve stability.
6) when reached a safe attitude, you can press '>' to slowly increase the wing-sweep (also reduces the turbine blade pitch). Now you're in high-speed mode. Like a real Mig-23, increase the sweep angle would have different control characteristic (usually roll quicker / pitch slower) and nose-down a little bit.
7) when the aircraft stabilized in the high-speed mode, you can press '2' for high-power mode just like firing the afterburner. The initial stage of the high-power mode would result the aircraft to roll a bit but should be easy to stabilize. Note that it is not suggested to use high-power mode in low-speed (low-sweep) mode, this would create too much vibration and damages the aircraft.
8) landing just reverse previous steps.. OK I don't know how to land, it is possible but don't ask me.

The aircraft in low-power mode can fly smoothly but tends to stall, especially with high wing-sweep angle, kind-of like the original Mig-23; everything is manual, not the easiest aircraft to fly but still have good control. This turbine engine design seems only works on single engine aircraft, I have also tried a twin-engine sweep-wing design (Tu 160 or B1B?) but it is far less successful.

Have fun.
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