P09233: Airframe Measurements and Aircraft Controls
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Establish Target Specifications

Step 1. Prepare the List of Metrics

Measurements Needed for a Fully Operational UAV

List of Metrics
Metric No. Metric Importance Units
1 Resolution of 5 units 1 mph, ft, etc.
2 Weight less than 1lb 3 lb, kg
3 Sample Rate of no less than 1 Hz 2 Hz
4 No bigger than a credit card (3.5" x 2" x .5") 4 ft, in, m
5 Memory of 1GB 7 Bytes
6 Software to process Data 8 n/a
7 Crash surviable 5 n/a
8 15 min Battery Life 6 min

Step 2. Relating Costumer Needs to the Engineering Metrics

Customer Needs as Related to Engineering Metrics Matrix
Needs and Metrics Metric 1 Metric 2 Metric 3 Metric 4 Metric 5 Metric 6 Metric 7 Metric 8
Need 1.1 x
Need 2.1 x x x x x
Need 2.2, 3.2, 5.2, 6.1 x
Need 2.3, 3.1, 5.1 x
Need 3.3 x
Need 4.1 x x x x x
Need 6.2 x
Need 7.1 x
Need 8.1 x
Need 8.2 x x
Need 9.1 x x
Need 9.2 x

Step 3. Set Ideal and Marginally Acceptable Target Values

List of Metrics
Metric No. Need Nos. Metric Importance Units Marginal value Ideal Value
1 2.1,2.3,3.1,4.1,5.1,6.2 Resolution of 5 units High mph, ft, etc. 10 <5
2 2.1,4.1,8.2 Weight less than 1lb Medium - High lb, kg 1lb <1/2lb
3 1.1,2.1,2.2,3.2,4.1,5.2,6.1 Sample rate of no less than 1 Hz Medium - High Hz 0.5 Hz <1Hz
4 2.1,4.1,8.2 No bigger than a credit card (3.5" x 2" x 0.5") Medium Length 3.5" x 2" x 0.5" >(3.5" x 2" x 0.5")
5 9.1 Memory of 1GB High Bytes 1GB > 1GB
6 9.2 Software to process data Medium - High n/a Import data into Excel Write Text file to SD card
7 2.1,4.1,7.1,9.1 Crash survivable Medium - High n/a Sensors survive, mainly IMU Box as a whole to survive
8 3.3,8.1 15 min Battery life Medium - High min, hrs 10 mins >15 mins

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