Cricket Bowling Machine Design

I need a detailed design for the upper body of a cricket bowling machine, including rotation along the x, y, and z axes. The control system will be semi-automatic, and I prefer the use of composite materials for construction.

Key Requirements:
- Upper body design with rotational capabilities
- Semi-automatic control system integration
- Use of composite materials and/or metals

Ideal Skills and Experience:
- Mechanical design expertise
- Experience with rotational mechanisms
- Familiarity with materials
- Ability to create detailed project proposals

Please ensure your application includes a comprehensive project proposal.