Deadline: 15 April

PLEASE READ DESCRIPTION, IMPORTANT TECHNICAL INFO HERE!

Hello, as you might have expected ornithopter challenge is out. Here i gave you a set of 8 wings with all software necessary to make them flap in the exact way they need in order to generate lift.
IMPORTANT:
If you want to modify wings in any way that changes their weight or shape, you must read technical description.

Technical description:

General remarks:
The wings are only producing upwards thrust, if you want to have a source of forward thrust, you need use normal engines.

Recommended wing loading is below 100kg/m² (20.5 lb/ft²)

Wings edition

Basic

Inside the variable editor you can find 4 variables on the very top that let you change various parameters of the wings, as shown on the image below:

wingTravel controls how wide the movement range of the wings is, this also affects how much lift is generated: more range = more lift.

staticSpread controls how much wings are separated from one another when wings arent flapping (a.k.a. airplane mode), useful primarily for esthetics

dynamicSpread controls how much additional separation wings gain when they start flapping (useful for preventing them from hitting each other).

frequencyCorrection can only be used when editing wing shape or mass, more on that in a second.

Advanced

Warious wings have different optimal flapping frequencies (meaning amount of times they flap per time unit). If wing is flapping at its optimal frequency, it can produce most lift from this motion.

The exact value of this frequency depends on wings mass, length and shape, and its a very complex relation, so sadly i cannot give you a ready equation for it. However the general rule is that bigger wings flap slower, and smaller wings flap faster.

frequencyCorrection is the variable that will allow you to change your wings flapping frequency. If you want to change the shape of the wings (which i very much encourage you to do), you will also need to fine-tune it untill you find the right value. Easiest way to do that is to set value of the frequencyCorrection variable to Throttle in variables editor, as on the image:

Now when you turn on the wings you can find the optimal frequency just by sliding your throttle up and down. When you are done just convert the % value of your Throttle input into a number from 0 to 1, and put it back into frequencyCorrection variable.
For example 85% Throttle converts to 0.85
or 43% converts to 0.43, and so on.

Also important note is, that the wings with higher frequencies do better yawing.

Challenge rules

Only requirement is that the main device to produce vertical thrust on the craft has to be the set of wings i gave you.

I also heavily discourage using gyros.

Troubleshooting

If wing movement induces gradually growing left and right fuselage oscilations, it means that wings move at resonant frequency of the fuselage. To fix it you need to change the frequencyCorrection to a value for which the issue does no longer occur, usualy it means decreasing it. (Sometimes changes as small as 0.005 are enough - and sometimes not.)

When roll is inverted and aircraft acts weird, it means that your frequencyCorrenction is set way too high.

Good luck, have fun!

See ya