Create a simple nonlinear model derived from the ram model

[1-Bart-1]

This model is very simple so that it can be used for path optimization. Certain parameters are derived from the more complex ram air kite model.

• This model does not have a bridle system.
• It has two twist groups, one on the left and one on the right of the kite.
  • The two steering tethers are connected directly to these twist groups.
  • The chord fraction of the attachment point is placed such that the total twist moment of the simple model equals the ram models twist moment.
• It has three or four tethers consisting of one spring-damper segment each.
  • The stiffness and damping for the tethers are found by applying a force to the last tether point in the ram model in the direction of the tether, and seeing how much the distance increases and how much time it takes to settle.

[1-Bart-1]

Done with #28