The Science and Technology
(updated 09/28/04 10:00am cdt)
STAC is a small group in the Twin Cities, Minnesota area who believe
that learning should be an adventure and are interested in applying scientific
and technological principles to build fun projects and to learn through
hands-on experience. We are open to individuals of all ages who share
our interests and are able to work cooperatively.
So far we have been focusing on rockets: both small model rockets, water
rockets, and the ground support equipment and procedures for launching
these. As we get better organized we will expand into other areas
such as robotics. See our project ideas list below and feel free
to propose new projects or adventures.
We try to maintain a broad range of topics and cooperate with other
local clubs that specialize in particular subjects.
I've been overwhelmed with rocket activities this
year, so STAC is temporarily on hold unless someone else would like to
step up to plan some events.
Specific Event Schedule: (May need to check the weather
forcasts also. NOAA
has a nice site.)
General Schedule: (Please call to confirm attendance)
07/??-??/04 Oshkosh Air Fest, Oshkosh Wisconsin
07/17/04 IEAS North Central Boy Scout
launch in Casselton, ND
08/13-15/04 IEAS Convention #1 in
09/??-??/04 BALLS experimental rocket launch in Black Rock dry lake
near Reno, Nevada.
Events of other groups we associate with:
[on hold] STAC work sessions every Tuesday
night (except first Tue of each month) at my hangar (or my house if temps
below freezing) from 6:30pm to 9:30.
[on hold] STAC Rocket & water rocket launches
first Saturday of each month.
[on hold] Other activities third Sunday of
Wars program on TLC
on TLC every Wednesday night at 8pm central.
Attend MASA rocket launch
fouth Saturday of each month. See their site for details.
Attend MASA club meetings
first Tuesday of each month. See their site for deetails.
During the summer, attend Tripoli
Minnesota high-power rocket launch at North Branch second Saturday
of each month. During the winter they have meetings this day.
During the summer, attend Tripoli
Southern Minnesota high-power rocket launch at Maple Lake third Saturday
of each month. During the winter they have meetings this day.
Attend Twin Cities Robotics Group
meetings third Thursday of each month at 7:00pm at the Science Museum of
Attend Twin Cities MechWars robot
Minnesota FIRST Lego League,
a Lego(R) robotics competition sponsored by INSciTE
they will also soon sponsor a Rocketry
Our most urgent projects have been related to preparing for
model rocket and water rocket launches.
Other major projects will be the construction of a human-sized pneumatic
robot and a very large water rocket.
Here is our list of pending
Estes Quark on 1/4A-3
Altair II - Estes C6-0 to C6-7: 2000ft lost upper stage in wheat field
Aerotech Initiator - Aerotech G40W-4: 2000ft. Temporarily lost
in bean field. Found later.
NCR Archer - H-128W-S
Bic Arcas - MicroMaxx 1/8A
7/11/04 IEAS North Central lab: static firings
Pourable ANCP: atmospheric in nozzleless casing
Pourable ANCP: in "Betty" test motor
Pourable ANCP 2: atmospheric in nozzleless casing
Pourable ANCP: in single Hydrahex 54mm motor
05/09/04 Tripoli Minnesota Launch at North Branch:
Quark on A10-3T, just to get the season started
Altair II (from MASA junkyard rockets contest) on B6-0 to C6-7. Arced
South after clearing rod. Staged nicely but mostly horizontal sustainer
flight.800' up. Landed 1500' South.
on Pro38 J-330-11. Nice motor! 3,336'. Slight arc
Northward. RRC2 was armed and had continuity but failed to fire either
charge! Fortunately I had configured R7 as drogue and timed the motor
delay well. Landed fine under the R7. The 60" main did not
deploy. The EJ fired just fine in post-flight ground test using same
battery. Altimeter was still functioning post-flight and beeping
altitude. Need to ground test the RRC2 in my vacuum chamber.
Perhaps battery was not weak?
04/??/04 IEAS North Central: static firings of KNO3/Anydrous Dextrose.
Nozzless configurations of un-melted powder mix to test burn characteristics.
Also tried with Dichromated Mg, which increased intensity and sparks.
11/09/03 Tripoli Minnesota Experimental Launch at North Branch:
Static tested MicroHybrid: successful burn.
11/09/03 Debut of Discovery Channel "Rocket Challenge" featuring Our
Stinkin' Rocket, and the "Minnesota You Betcha's" speed build team.
10/18/03 Tripoli Minnesota Launch (postponed) at North Branch:
Altair II C6-0 to C6-7 (MASA junkyard rockets streamer duration contest
Big Daddy D12-3
NCR SA-14 Archer H-128M (team effort)
BALLS 2003 at Black Rock dry lake in Nevada:
09/20/03 Bic Arcas on MicroMax. Excellent flight.
09/21/03 Assisted Tim Covey with "Cold Genie". Some photos by Marcus
Tallhamn are at the bottom
of this page.
07/20/03 Our Stinkin' Rocket on 2 M1419's with Ky Michaelson, Bruce Lee,
and Tony ???. Link to video
05/18/03 Tripoli Minnesota EX Launch at North Branch:
EX AN/MG G-50 in Gold Retro-Experimental rocket (that Mike Van de Kamp
gave me the day before). Used Delay kit from an Aerotech E-11 reload.
Motor ejection was slightly early. Good flight to about 1000'.
11/09/02 Tripoli Minnesota Launch at North Branch:
Initiator G64-7W w/beeper
Big Daddy D12-3
Archer H-180W-S w/ R/C ram-air 2 part deploy. Also video'd &
and still photos of someone's L2 flight.
Launch at Blaine: Junkyard Rockets theme. Flew my team's
two-stage streamer duration rocket three times then helped search the woods
for lost rockets.
B6-0 to C6-7 (very high but lost in the woods for a while and didn't get
it back in time)
B6-0 to B6-6 weather cocked and deployed low
B6-0, B6-6 weather cocked again. Ended up with second place.
09/28/02 Tripoli Southern Minnesota Launch at Maple Island: Flew
my NCR SA-14 Archer on H128W-Short w/2 part recovery and R/C control of
Ram Air parachute on Payload section.
09/20-22/02 BALLS Experimental Launch in Black Rock Dry Lake near Gerlach,
Nevada. 5,000 mile trip with Brian Elfert.
09/14/02 Tripoli Minnesota Launch at North Branch:
Flew my NCR SA-14 Archer on H180W-Short w/2 part recovery and R/C control
of Ram Air parachute on Payload section.
09/07/02 Osceola Wings and Wheels air display and book sale
08/25/02 Eau Claire, WI Airshow with USAF Thunderbirds
Picnic at Otsego VFW Club (photos):
LDRS 21 Trip: just watched.
07/06/02 Fargo EX launch.
Flew Archer on H-128W w/2-piece deployment with Payload under Ram Air deployed
from bag attached to booster.
Minnesota Launch at North Branch:
I was tired and only flew my Bic Arcas on new MicroMaxxII motor (took 2
6v batts in series to ignite).
06/25/2002 Tripoli Southern Minnesota launch at Maple Lake:
NCR SA-14 Archer H-128, w/Ram Air chute. It fowled.
Launch at Blaine:
Two-stage Avenger "Wind Test Dummy" C6-0,C6-5: Nice boost but no
ignition of 2nd stage, lawn dart w/major damage
Big Daddy on D12-3
Taurus C6-5: perfect
Initiator F22J-5 rms Ram Air chute, beeper. Perfect flight on 2nd
try. Arced downrange though so a bit late deploy good deploy of Ram
Air, nice glide
Launch at Sunrise Middle School, White Bear Lake:
Stomp Mk1 C6-3: Good.
Avenger "Wind Test Dummy" B6-0 to B6-6 (too much angle, just
Beta A10-0T, A3-4T (20+yr old motor) Excellent, very high flight.
Very long boost
Launch at Sunrise Middle School, White Bear Lake: 45 degrees.
Found-Parts Free Rockets contest. Completely
01/01/2002 New Year's Day launch: Fire two New Year's party horns
Launch at Sunrise Middle School, White Bear Lake: 67 degrees!
Stomp rocket drag race!
11/12/2001 Student Aerospace class rocket launch at Cleveland Middle School
in St. Paul. 30 students from STAC member TJ's class flew their Alpha
rockets. I built a 4 pad launch system and acted as Launch Control
Officer to help get all rockets launched within 45 minutes.
Launch at North Branch: My Level 2 Certification flight!
Launch at Blaine: "Clusters" Cold but very clear day. Cold
winds picked up through the day but not too bad.
Launch at North Branch: drizzly day but did a lot of flying.
Did not get to fly the Thor for L2.
Launch at Blaine: Nothing particularly special, just a nice day
of flying. Passed my L2 written test afterwards.
Launch at North Branch: My father's
BAR flight on his Aerotech Strong ARM and my L1 certification on my
on an I161W.
07/25 - 8/02/01 Oshkosh AirVenture
Large and Dangerous Rocket Ships (LDRS
XX) launch in Lucerne, CA
Range Open House (East of La Crosse, WI. Scroll to bottom of map):
watch F-16's, B-1B's, etc drop bombs and strafe.
07/10/2001 STAC Meeting at my hangar: flew, cleaned launch rods, worked
on Thor motor mount staging rod guides
Launch at Blaine: "Going Crazy in Stages". Avenger B6-0
to A6-4, Beta A10-0T to 1/4A-3T, Arrow300 B6-0 to B6-0 to A6-4, Big Daddy
D12-5, Completely Cardboard D12-3 with Streamer
Rainbow, NCR Archer G80-4T with Magnetic Apogee Detector dual deployment
(charge didn't fire due to weak battery, but 2nd chute opened due to opening
shock of first chute). I won a Custom Venture kit in the staged fliers
Air Guard Museum: Host museum tour for MASA members
MN Launch in North Branch. Got to fly my two dumpster-diver finds:
NCR Archer and Estes Big Daddy. Also flew Custom Cardboard on an
E11 for the first time.
06/02/2001 Twin Cities MechWars
at Aldrich Arena in St. Paul. We had a great time watching
05/29/2001 STAC Meeting at my hangar: assembled PVC high power launch pad,
repaired NCR Archer and Estes Big Daddy rockets
MASA Launch at Blaine (informal): MicroMaxx Bic Arcas through Initiator
on G64-7W, including staged rockets on mini's and C6 to B6.
MN Launch in North Branch
Launch at Elk River. I flew my cardboard D12-5 rocket, Bic Pen, and
MicroMax Mosquito. See MASA
Photo Gallery and Launch
Report. It was so windy that my range box fell over onto my rocket
box and damaged 4 of my rockets. The Cardboard rocket was damaged
(split body tube) on a hard landing due to tangled streamer after an otherwise
04/14/2001 Impromptu launch of my new cardboard
rocket: C6-5 underpowered - hit ground at ejection, D12-6 great, D12-6
04/10/2001 Meeting at my house: Built rockets. Ray: Estes Tie Fighter,
Paul: Aerotech Strong ARM, TJ: Mutiny on the Bounty scratch, Jeff: 3" upscale
of Mutiny on the Bounty w/24mm MMT.
03/20/2001 Meeting at my house: demonstrate lightwave communications techniques
Informal MASA/STAC Rocket Launch: At White Bear Lake
02/27/2001 Met at my house: Watched the Russian Buran shuttle video I recently
had translated to US tv format, NASA 25yr Anniv Video
launch: White Bear Lake
Rocket Launch at Beaver Lake in St. Paul
01/01/2001 New Year's launch of "Mutiny on the Bounty II" on B6-4.
Perfect launch but lost rocket in trees.
Year 2000 Archive
Here are some links to the type of cool stuff I envision STAC (Science
& Technology Adventure Club) doing:
Here are some links I was looking at last year when I built my electromagnetic
Other Science/Tech Links:
Whole Frog Project: Discect a frog on-line
How Stuff Works: This is a
site to check every week. They pick several common devices and explain
them in detail.
of Ten: A web page that lets you step through a sequence of images
from the view of a single Protons to our whole Galaxy.
Back to Jeff's Home page