AWE Model Overview

Overview existing and planned AWE concepts and models

LEI kite models

KPS3

This model assumes the kite to be a point mass. This is sufficient to model the aerodynamic forces, but the dynamic concerning the turning action of the kite is not realistic. When combined with a controller for the turn rate it can be used to simulate a pumping kite power system with medium accuracy.

KPS4

This model assumes the kite to consist of four-point masses with aerodynamic forces acting on points B, C and D. It reacts much more realistically than the one-point model because it has rotational inertia in every axis.

KPS5

RAM-air kite for ship propulsion

This model represents the kite as a deforming rigid body, with orientation governed by quaternion dynamics. Aerodynamics are computed using the Vortex Step Method. The kite is controlled from the ground via four tethers.

Tensile Rotary Power Transmission

Three rotating wings

Rotating Pair of Wings

The concept is described here: https://www.tiira.ch/

Advantages:

1. continues power production
2. lower mass, costs and complexity of the wing than concepts with wing mounted generators
3. automated launch and landing is straightforward

Components

• pair of wings
• generator
• two winches with two tethers
• tilting actuator