Lab Report

 Analytic Essay

Animations

 Background Info

Diagrams

Index

 Hypothesis

 Method & Materials

 Results

 Photos

 Links

 Video

 Bibliography

Problem Statement

Can we construct a sturdy body and working thrusters that propel it in a straight line?

Method & Materials

Glues and Fasteners
-a 1 oz. bottle of crazy glue
-hot glue gun and glue sticks
-rags
-newspapers
-ten 6'' by 3/16 tie wraps
-six 3 6 by 1/2'' stainless steel metal screws
-six #6 stainless steel washers
-three 1'' schedule 40 PVC plastic conduit pipe clamps
-black PVC electrical tape

Frame
-a 60'' length of 1/2'' schedule 40 PVC pipe cut into the following lengths
-2 pcs. that are 4 and 1/2''
-2 pcs. that are 4''
-4 pcs. that are 3''
-4 pcs. that are 2 and 1/12''
-6 pcs. that are 11/2''
-10 pcs. of 1/2'' schedule 40 PVC 90 degree elbows
-4 pcs. of 1/2'' schedule 40 PVC tee's
-1/4'' wire mesh sheet
-2 floats

Electrical
-2 #31 wire nut connectors
-3 10' lengths of 22 gauge speaker wire
-1 10' length of #15 gauge speaker wire
-1 4'' by 2 and 1/2'' by 11/4'' plastic electronic box
-3 pcs. of 6'' long #22 or #18 gauge red hook up wire
-3 pcs. of 6'' long #22 or #18 gauge black hook up wire
-3 pcs. of 3'' long #22 or #18 red hook up wire
-3 pcs. of 3'' long #22 or #18 black hook up wire
-rosin core solder
-three double pole double throw with center off toggle switches with 3 amp rating
-lantern battery 6 amps at 12 volts DC

 

Thrusters
-3 small propellers
-3 12 volt electric motors
-1 package of toilet seal wax
-generous dab of petroleum jelly
-3 plastic 35mm film canisters

Ballast
-lead fishing weights
-a product such as Dip It for coating weights

Tools
-soldering iron
-needle-nose pliers
-regular pliers
-side cutters or flush cutters
-Phillips #1 screwdriver or type to match screws used
-drill and drill bits: 1/4'', 1/8'', 3/16'', 3/32'', 7/32'''
-sharp razor knife
-wire strippers
-one handsaw or hack saw for cutting PVC pipe
-miter box
-#120 sandpaper or Scotchbrite scrub pad
-a ruler
-scissors
-block jig for holding thruster during construction
-electric frying pan and coffee cup for melting wax to seal thruster

Hypothesis

All times are in seconds

Trial AVG
up 10
down 8
left 12
right 11
back 15
straight 5

 

Results

All times are in seconds

Trial 1 2 3 4 Average percent error
up 13.13 14.79 13.27 12.32 13.38 0.053
down 14.28 13.95 15.35 14.56 14.54 0.028
left 14.53 16.09 16.53 15.47 15.66 0.042
right 16.66 17.83 17.24 18 17.43 0.027
back 18.93 17.27 19.11 19.61 18.73 0.038
straight 7.56 8.57 10.67 8.94 8.94 0.097