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Mechanical Engineering Group Design Projects
UCL Mechanical Engineering


High-Level Tennis Ball Serving Machine

High-Level Tennis Ball Serving Machine

The team behind the High-Level Tennis Ball Serving Machine project

The team behind the High-Level Tennis Ball Serving Machine project

Team Members

  • Dayann Charles Jeyamohan
  • Ahamed Harees
  • Mohammad Jamshaid,
  • Yang Khor
  • Nasser Sabbagh


Dr Adam Wojcik

The Project

Have a look at the poster for the project

The aim of this project is to produce a design for a tennis ball machine that accurately emulates serves seen in the game of tennis.

Aspects of the serve that require replication include:

  • high speed of release,
  • variations in spin
  • variations in landing position in the opposition service box.

In addition, the design will incorporate different release heights to reproduce the range of release points seen in tennis, as a result of player height, arm span, jump height etc.

In order to make the design more complete and marketable, we also considered the implementation of player feedback, a fully-integrated control system for ease of use and pre-shot warning systems.

The Design

We used a dual-wheel configuration as the release mechanism to apply speed to the ball and eject it from the machine. Spin and landing position variations were achieved by using a three degree-of-freedom pivoting bracket system. We tackled the variation in release height usinga cascading lift design, produced through VEX (metallic building block platform) as proof-of-concept. The release mechanism was housed in a Perspex casing which allowed freedom of movement and minimal interference with the ball on release, whilst also incorporating an integrated ball feeder mechanism.

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