membrane team spent the morning finishing constructing
a set of wings for the three-foot model using aluminum-tubing
frame covered with a rip-stop polyester membrane. Later
in the day, the team began to brainstorm ideas about
how to create a set of wings with a six-foot span.
Because carbon fiber is lighter and stiffer than aluminum
they decided to build the wing using a carbon fiber
frame covered with a polyester membrane.
The mechanical support team spent the morning designing
the body for the glider with a six-foot wingspan. They
also helped the design team find pre-designed
airfoils with Reynolds numbers between 60,000 and 90,000 so that Axel could
analyze them and choose one to optimize the glider
Meanwhile, the design team split into two groups. One group worked on designing
a wing with a six-foot wingspan while the other group spent the day creating
a spreadsheet to calculate aspect ratios, trim speeds, and Reynolds numbers
using detailed wing and fuselage specifications.
day started off with a meeting about the mid term presentation
to take place the following
were assigned to each high school team member
so that each person was to talk for about 3 minutes. Then, the students broke
into their respective groups and quickly discussed the plan for the rest of
The stable glider groups made calculations and tested out some new ideas for
the glider. The mechanical design group continued carving the head out of a
block of foam and helped the membrane group get the wings for the 3’ glider attached.
The membrane group finished their 3’ glider and started designing their
It was a very productive day and it was exciting to see the positive response
to the SF Chronicle article about the project.
day started off with a meeting where Arthur talked
to the team about the mid-term presentation,
every team member had to turn in a outline of
what they were going to say. After that, every team member went back to his/her
design team and kept advancing the status of the 2-meter wingspan glider. The
stable glider team kept making calculations to further their research and help
make their glider become more stable. The mechanical team finally finished
a fuselage made out of foam. And the membrane team
attached their 3-foot membrane
to a fuselage, but did not show good results, so went back to designing another
glider. Near the end of the day PJ emailed everyone a standard slide for the
presentation, and everybody had to design his/her own slide.
the different teams all were working on designs for
different elements of their gliders.
Ben, PJ, and Eric went to AeroMicro hobby shop,
and bought servos, control horns, and other control elements of the gliders.
They looked at transmitters, but did not buy one, because of the need for the
perfect transmitter that will work for all our gliders. (Because we haven’t
finalized a design we don’t know channel requirements etc.) By the time
they got back from AeroMicro, it was almost 3:00. We messed around with the flying
wings, and then it was time to leave.