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

Planetary Exploration Using Biomimetics
An Entomopter for Flight on Mars
3
2.5
2
1.5
Coefficient of Lift (CL)
1
0.5
0
0.000 0.020 0.040 0.060 0.080 0.100 0.120 0.140 0.160 0.180
-0.5
Case20
Case19
-1
-1.5
-2
-2.5
Time (t) in secs
Figure 3-128: Variation of Lift Coefficient with Span
The chart shows that there will be very little effect on the lift coefficient value over the range
of spans selected, and as such net lift coefficient will stay relatively constant with increase in
span. This makes sense because the non dimensional lift coefficient will not change, however
the lift force will change as a function of wing area.
b. Keeping all variables fixed and just changing the forward velocity results in that which is
depicted in Case 21 and Case 22 of the design-of-experiments array shown in Figure 3-
129.
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Phase II Final Report