Abstract
One of the challenges in engineering design is
adapting a set of created designs to a change in
requirements. Previously we presented two four-arm,
symmetric, evolved antennas for NASA's Space Technology
5 mission. However, the mission's orbital vehicle was
changed, putting it into a much lower earth orbit,
changing the specifications for the mission. With
minimal changes to our evolutionary system, mostly in
the fitness function, we were able to evolve antennas
for the new mission requirements and, within one month
of this change, two new antennas were designed and
prototyped. Both antennas were tested and both had
acceptable performance compared with the new
specifications. This rapid response shows that
evolutionary design processes are able to accommodate
new requirements quickly and with minimal human
effort.
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