P09122: MAV_2

Establish Target Specifications

Overall List of Metrics

The table below presents the metrics, or engineering specifications, that will be used by the team to design against.

List of Metrics
Metric No. Metric Importance Units
1 Recover from 5 mph wing gust 5 Mpm, M/S
2 Fly straight and level within a meter over a distance of 50 meters 6 ft, m
3 Have at least 6 changeable parameters 7 #
4 Weight less then 0.5 kgs 4 kg, lb
5 All testing matrices completed 1 #
6 Receive and process remote signal 2 Y/N
7 Transmit data to ground unit 8 List
8 Process and use data from all sensors 3 Y/N, List
9 Determine plane's position within 1 meter 9 ft, m
10 Fly a designated pattern within 2 meters 10 ft, m
11 Be smaller then 2.5"x2.5"x8" 4 ft, m
12 Achieve all desired flight qualities 3 Y/N, List

The metrics, or engineering specifications, in the preceding list should be directly related to the customer needs. In other words, the created engineering specification should have some relationship to a need imposed by the customer or the marketplace. The table below maps the customer needs against the metrics (or engineering specifications). In many design and product development circles, the rows along the left are often referred to as the voice of the customer, while the columns across the top are often referred to as the voice of the engineer.

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 Metric 9 Metric 10 Metric 11 Metric 12
Need 1.1: x
Need 1.2: x x
Need 1.2.1: x x x x x
Need 1.3: x
Need 2.1: x x x x x
Need 2.2: x x x x
Need 2.3: x x
Need 2.4: x
Need 2.5: x
Need 3.1: x
Need 3.2: x x x
Need 3.3: x x
Need 4.1: x
Need 4.2: x
Need 5.1: x

Flight Qualities

The desired flight qualities that will be used to measure the performance of the platform and control system are based on DoD and FAA aircraft quality specifications.

Summary of Flight Quality Specifications

Table of Flight Quality Specifications for Our Application
Mode Metric Min Max
Phugoid Mode Damping Ratio, zeta 0.04 -
Short-Period Mode Damping Ratio, zeta_sp 0.30 2.0
Spiral Mode Time to Double Amplitude (sec), td 1.4 -
Roll Mode Roll Time Contsant (sec), T - 1.4
Dutch Roll Mode Damping Ratio, zeta* 0.08 -
Dutch Roll Mode Natural Freqency (rad/sec), omega_n 0.04 -
Dutch Roll Mode Magnitude of real part of complex root, zeta_omega_n* 0.15 -

'*' Which ever criteria yields the larger value of zeta


MicroPilot Single Use Miniature UAV Autopilot
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