By David Wyatt, Mike Tooley
The airplane Engineering rules and perform sequence presents scholars, apprentices and practising aerospace execs with the definitive assets to strengthen their airplane engineering upkeep reports and occupation.
This booklet offers an creation to the rules of airplane electronic and digital structures. it really is written for someone pursuing a occupation in plane upkeep engineering or a similar aerospace engineering self-discipline, and particularly may be appropriate for these learning for approved airplane upkeep engineer prestige as a part of an EASA or FAR-147 licensed path or taking Aerospace Engineering City & Guilds modules, EDEXCEL nationwide devices, EDEXCEL better nationwide devices or a level in airplane engineering.
Read or Download Aircraft Digital Electronic and Computer Systems: Principles, Operations, and Maintenance PDF
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The plane Engineering rules and perform sequence presents scholars, apprentices and working towards aerospace pros with the definitive assets to develop their airplane engineering upkeep experiences and occupation.
This booklet presents an creation to the rules of plane electronic and digital structures. it truly is written for an individual pursuing a occupation in plane upkeep engineering or a comparable aerospace engineering self-discipline, and specifically might be appropriate for these learning for authorized plane upkeep engineer prestige as a part of an EASA or FAR-147 authorized path or taking Aerospace Engineering City & Guilds modules, EDEXCEL nationwide devices, EDEXCEL better nationwide devices or a level in airplane engineering.
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Additional resources for Aircraft Digital Electronic and Computer Systems: Principles, Operations, and Maintenance
Which one of the following ADC types uses a large number of comparators? (a) ramp type (b) flash type (c) successive approximation type. 5. The advantage of an R-2R ladder DAC is that: (a) it uses less resistors overall (b) it uses a smaller number of analogue switches (c) it avoids having a large number of different value resistors. Aircraft digital electronic and computer systems 6. A 10-bit DAC is capable of producing: (a) 10 different output levels (b) 100 different output levels (c) 1,024 different output levels.
As an example, assume that a logic circuit is to be constructed that will produce a logic 1 output whenever two, or more, of its three inputs are at logic 1. 4. 5 shows the logic circuitry required and the Boolean expressions for the logic at each node in the circuit. 6. The inputs to this logic system consist of five switches that detect whether or not the respective landing gear door is open. 5 The majority vote logic drive six warning indicators. Four of these are located on the overhead display panel and show which door (or doors) are left open whilst an indicator located on the pilot’s instrument panel provides a master landing gear door warning.
Finally, the dual-slope ADC is a refinement of the ramp-type ADC which involves a similar comparator arrangement but uses an internal voltage reference and an accurate fixed slope negative ramp which starts when the positive going ramp reaches the analogue input voltage. The important thing to note about this type of 31 ADC is that, whilst the slope of the positive ramp depends on the input voltage, the negative ramp falls at a fixed rate. Hence this type of ADC can provide a very high degree of accuracy and can also be made so that it rejects noise and random variations present on the input signal.