Phase II Final Report - NASA's Institute for Advanced Concepts

Planetary Exploration Using Biomimetics
An Entomopter for Flight on Mars
ated. Innumerable combinations of these variables are possible and would require an extensive
effort for exploration (beyond the scope of the NIAC Phase II study resources), so an assumption
was made that within each dimension of design space the key response will have a quadratic
relation with the dimension variable. Hence, based on this assumption, each variable will have
three values: a minimum within the range, a maximum within the range, and the center point.
For example, velocity will be taken as 14, 20, and 26ft./sec. After having made this assumption,
a full factorial design space array would require 35 or 243 runs for evaluation of responses at all
points. This can be mitigated by taking a fractional factorial orthogonal array for design space
exploration. A face-centered composite design orthogonal array with 28 runs was formulated for
the purpose of this analysis. The array is given in Table 3-9.
Table 3-9: Design of Experiment Array
Run No. Span Velocity Frequency
Plunge
Amplitude
Pitch
Amplitude
1 2.6 14 6 45 12
2 2.6 14 6 75 8
3 2.6 14 16 45 8
4 2.6 14 16 75 12
5 2.6 26 6 45 8
6 2.6 26 6 75 12
7 2.6 26 16 45 12
8 2.6 26 16 75 8
9 4 14 6 45 8
10 4 14 6 75 12
11 4 14 16 45 12
12 4 14 16 75 8
13 4 26 6 45 12
14 4 26 6 75 8
15 4 26 16 45 8
16 4 26 16 75 12
17 3.3 20 11 60 10
18 3.3 20 11 60 10
19 2.6 20 11 60 10
20 4 20 11 60 10
21 3.3 14 11 60 10
142
Phase II Final Report