Meeting #329


Attending: Michael Wallis,
Ed Stokke,
Dan Solvin,
Julie Porter,
and
Stellan Lagerstrom.
Call to order: VP Julie Porter called the meeting to order at 21:20

Pre-meeting Discussions:

  • Peroxide uses during WWII
  • Walther submarine
  • ME-163 Jet Fighter
  • Galactic conspiracies
  • Face on Mars

Guest Presentation:
Ed Stokke was by to encourage E.R.P.S. members to participate in this year’s Silicon SF Convention, Oct 3-5, 2008.

  • Room space is available for an E.R.P.S. party at Silicon (Rooms $100/night)
  • We may be able to get some funds from the Con to help with the party
  • we should be able to get a Club table
  • We can bring engines, rocket gear, books, videos, etc.
  • Silicon would like to have stronger Science content this year
  • We may be able to get a panel to discuss things
  • Carol Christensen is the Science Alley Director
  • The web site has a “suggest a panel” page to submit programming ideas and panelists
  • Dann Lopez is handling Guest Liason
  • They are looking for Maker Faire type stuff
  • Memberships are $50 for adults, $40 for Youths (4-11) and free for Toddlers until Sep 14th. More after.

Treasurer Report:

  • Still have money
  • Still working on getting past financials

Rocket Development:
Dan Solvin talked about the current state of the vehicle development work he’s doing.

  • design work ongoing
  • would like approvals
  • have 5 copies of RockSim
  • comes with parachute
  • bought some parts at McMaster
  • would like to get some pressure sensors (@ 5%)
    2 @ 500, 3 @ 7500 = $200
    >> Motion: for $200 approval = mjw/jp = passed

  • has 2 small pressure tanks
  • need to move
    sheet metal bending machine (pierce’s)
    2 pressure tanks
    granite surface plate

  • move the robot arm
  • wants to make test tanks (1/2″ thick)
  • 30 second engine tests
  • cavatating venturii testing
  • Tech shop lathe size?? (stellen)
  • Bojo’s lathe = 3′
  • wants to get 2 tanks – $160 shipping = $500
  • large safety factor
  • non-welded – snap ring closure
  • each tank 5 ‘ tall
  • 1/8″ wall AL tank – flight tank destructive test
  • 1500 psi expected burst pressure
  • air only?, should rip only
  • “scary factor”
  • wall thickness : diameter
  • same source of surplus aluminum – saves on shipping
  • what can we have for Silicon?
  • Ed to ask friend

Stellan became a member and mentioned he …

– wrote software for Satellites
– MS in EE from Royal Institute of Stockholm
– could make parts @ the TechShop once checked out

Adjourned: 22:19

General Meeting #329