Simulation Goals

What are the goals of a model simulation?

For a flying airplane model, the following are important:

Landing Speed
Roll Rate
Turn Radius
Turn Rate
Climb Rate
Ability to Hover
Cruising speed (best low drag, sufficient lift to stay in the air)
Roll stability
Pitch rates
High Alpha capability

Out of the above listed parameters, Landing speed and roll rate, climb rate, ability to hover, roll rates and pitch rates are not under the control of the pilot and need to be configured in the model.

The limits to the above parameters can be found by watching videos of comparable models, heavier models or smaller models, especially for landing speed. Then we know that the parameters can be achieved in real life.

The current version of the PC9 has some problems with it: it lands too fast, and rolls too slowly, possibly. Comparing the model with an online video will show the difference between the real life model and this version, and has to be adjusted.

The sport.xml file which this configuration file is derived from, lists the mass of the model as units="0" Mass="0.0932256" which means, in slugs, ( slug = 14.6 kg) which means 1.36 kg. The PC9 xml file has the mass set as 1.6kg, (Mass="0.112") which is too high. This is recorded here to highlight the mistake that makes it difficult to fly. The original sport model is lighter, so that weight should be selected, at leasst. Lets see how it flies with the new value. It was almost impossible to land with the former weight of 1.7 kg

The image on the left shows the PC9 safely landed, not easily but much easier than landing the heavier model.

It will fly on 605 throttle, and 80% should be the maximum, in order to prevent unreal ism. Speaking of unreal ism, the battery time should be limited to 5 minutes, which can be done through limiting the capacity of the battery,

Consider replancing the IC engine with a electric motor of the Flexifly XML or the SuperZagi. Under the POWER tags. This should instantly convert this to an electric motor. Battery weight is a factor, however, see the Flexifly weight as 0.43 kg (mass units 1 which is Kg)

</propeller>

</shaft>

</battery>

The PC9 looks dark in the shade, very dark< I need to look at materials setting in Wings 3D

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