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The all-terrain surveillance vehicle shown opposite operates on tracks and has a camera capable of rotating through 360° - Leaving Cert Engineering - Question c - 2020
Question c
The all-terrain surveillance vehicle shown opposite operates on tracks and has a camera capable of rotating through 360°. (i) Describe, with the aid of a diagram, a... show full transcript
Worked Solution & Example Answer:The all-terrain surveillance vehicle shown opposite operates on tracks and has a camera capable of rotating through 360° - Leaving Cert Engineering - Question c - 2020
Step 1
Describe, with the aid of a diagram, a suitable drive mechanism for the surveillance vehicle.
Answer
A suitable drive mechanism for the surveillance vehicle can be achieved using a worm and worm wheel system. This method provides the necessary drive for the vehicle while allowing for precise control over speed and torque.
- Components: The main components of this mechanism include a worm gear, a worm wheel, and the motor.
- Diagram: In the diagram, the motor is connected to the worm gear, which then engages with the worm wheel mounted on the drive shaft.
- Functionality:
- The worm gear rotates, causing the worm wheel to turn, which results in the drive tracks moving.
- This setup not only controls the speed but also enhances the torque, making it effective for traversing difficult terrains.
Step 2
Describe, with the aid of a diagram, a suitable mechanism which will rotate the camera through 360°.
Answer
To enable the camera to rotate through 360°, a bevel gear mechanism can be utilized. This mechanism effectively transmits the motion necessary for such rotation.
- Components: The primary elements include a smaller bevel gear attached to a motor and a larger bevel gear that is linked to the camera shaft.
- Diagram: The diagram should illustrate the motor connected to the smaller bevel gear, with the larger bevel gear rotating the camera.
- Functionality:
- The motor spins the smaller bevel gear, which in turn rotates the larger bevel gear. This enables the camera to rotate continuously through 360°.
- Additionally, this mechanism allows for controlled rotation, making it suitable for surveillance purposes.