Can you define what you mean by PDS? That acronym could stand for at least 20 engineering/technology related topics, such as:
Planetary Data System
Product Data Sheet
Parallel and Distributed Systems
Product Development System
Power Distribution System
Permanent Duty Station
Pallet Design System
Packet Driver Specification
Such a thing would give the constraints within which the solution is to appear. For example:
Maximum weight 59kg
Minimum length 125mm
Maximum heat dissipation 23W
Wiring to British Standard 7671
Must have air-operated plug doors
etc.
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