Question

what are the four parts of a proper engineering specification? see table 2.4 as an example. Describe what information conveyed with each part.

Table 2.4: Product design specification for the compressor transmission. Criteria Test conditions Objective Aspect Test transmission on a Transmission must transmit 5 kW Transmit Performance at 2850 rpm. dynamometer torque If positive drive is employed then assume specified ratio or if a positive drive is used measure speed of output shaft at design Speed ratio The transmission ratio between driving and driven shafts should be 2850/1500 1.9. not conditions. At least 95 % Efficiency Dynamometer test. Must connect to specified 1.5" driving shaft and 1.5" driven shaft using flexible couplings. Use standard coupling methods that are rated for the maximum torque and speed with a factor of safety suitable for the application. Drive Operation in an internal environment at temperatures between -10 and 50 °C. Temperature Bench test prototype. Humidity Bench test prototype. Operate in an environment with a humidity of 100 % at 20 °C.

Answer 1

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