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Tutorial on Vertical Takeoff and Landing (Yak-36)

40.8k AntonWings  19 days ago


[First of all]
Taking off and landing a VTOL aircraft can be a bit challenging; even the Vertigo that Jundroo prepared was difficult for me to get it to take off and land.
I thought I should at least explain how to fly the aircraft I built.

[Vertical takeoff]
Takeoff is relatively easy: just turn on VTOL mode, set VTOL to -1, and throttle up once the nozzle is down.
...But let me explain in a little more detail.

(1) Activate AG7 and turn on VTOL mode. This activates the built-in airbrakes, reaction wheel, and RCS nozzle, and also activates the engine nozzle rotation. The nose air dam fence is also deployed.
(2) Lower the VTOL to -1. This will cause the engine nozzle to point down and the built-in air brake to deploy.

(3) Increase the throttle. When fully loaded with fuel, the aircraft will lift at approximately 70-75% throttle.

(4)If the throttle is adjusted at this time, the aircraft will maintain a constant altitude and hover. This is a little difficult. In addition, it is possible to pitch down to move forward and pitch up to move backward in this state.
(5) Raise the VTOL a little at a time. The engine nozzle rotates backward and the aircraft begins to move forward. At this time, the aircraft is in a strong pitch-up attitude. Pitch down and maintain the aircraft's attitude.

(6) Increase the throttle a little bit. The speed will increase.

(7) When VTOL reaches zero, the aircraft should already be flying with lift from the wings.

(8) Let's store LandingGear and turn off AG7. Then just fly as usual.

Yeah

[Vertical landing (landing on a runway)]
This is a little more difficult. It may take some practice. It is advisable to practice landing by descending from hovering altitude in the step (4) of vertical takeoff. It is also recommended that you master the forward and backward movements when hovering.
(1) As with a normal airplane landing, enter the approach course to the runway.

(2) Gradually reduce throttle, lower VTOL and deploy flaps a little at a time.
It is recommended that the aircraft reach the airspace above the runway entrance at less than 20% throttle, speed less than 300 km/h, and VTOL at -1.

(3) Deploy the LandingGear.
(4) Activate AG7 and turn on VTOL mode.
(5) The speed will decrease further and the aircraft will lose lift from the wings, so it will crash if the speed remains the same. The VTOL is -1, so the engine should be firing directly down. Find the optimum thrust at which altitude can be maintained. This depends on the amount of fuel remaining, i.e., the weight of the aircraft. As a rough guide, with 80% fuel remaining, the throttle should be about 65-70% to maintain altitude.

(6) Pitch up and lean the engine exhaust forward to reduce speed. Reduce speed to the point where you want to land. Always adjust the throttle. If too much, the altitude will increase, and if too little, the nose will not lift and the altitude will decrease rapidly.

(7) Finally, the speed should be close to zero. Once the plane is hovering, reduce the throttle a little at a time, adjusting the throttle as you go.

(8)Touch down softly. The throttle is set to 0, and the aircraft comes to a standstill when the brake is applied.

Done

The above is just an example of operation. I have no sense of piloting, so I follow the above procedure, but a good pilot may be able to do it in a more acrobatic manner.

[Vertical landing (landing on a sailing ship)]
Oh, this is a difficult one. But the basic idea is an application of the vertical landing method described above. The key points are,
(1) Approach from behind the ship. This is the same as a normal landing.

(2) The heading should be in the direction the ship is traveling; if it is the USS Beast, it should be sailing due north.

(3) The final approach should be in line with the ship's sailing speed, which should be approximately 30 km/h for the USS Beast.

As you get better you will be able to land on the destroyer's helipad.

That's all.
Have fun!

2024/4/19