Embedded Files
CONSTRUCTION
CONSTRUCTION
CO2 Car Drawing
Cut out hole for cartridge
Main shape of body
Lofting cockpit
Extruding front wheel
Filleting sides
Test with thin and thick tires
Test with thin and thick tires
Test with thin tires
Test with thin tires
Thumbnail and Sketches
Thumbnail and Sketches
C02 First design
C02 First design
C02 Second design
C02 Second design
Co2 car 1 in flow simulation
Co2 car 2 in flow simulation
Car 1 drag
Car 2 drag
Cut out hole for cartridge
Air flow holes Back view
Filleting the body
Air flow holes Front view
Guide line hole for fishing line
Axles holes for axles
right side view extruded
Race day
Race day
CALCULATING MAXIMUM VELOCITY OF YOUR CO2 CAR
Maximum velocity is how fast your car went before drag started to slow it down.
FORMULA
[ ½ (Engine Burn Time + Car’s Trail Time)] Velocity = Race Track Distance
Engine Burn Time (EBT) of an 8 gram CO2 cartridge is .5 seconds or 12 gram CO2 cartridge is ___ seconds?
½ = .5 or ________
Velocity = v
Race Track Distance = 60 feet
CTT = your car’s trial time
.5 sec. + ________2.315______________sec. = _______2.815______________ trial time EBT + CTT
.8 sec. + _________2.315_____________sec. = ______3.115_______________
trial time EBT + CTT
.5 X _______5.93___________ = _____2.965______________
EBT + CTT ½ EBT + CTT
60 feet divided by ________2.965______________ = ________20.23___________
½ EBT + CTT max. velocity
My car reached a maximum velocity of ___________20.23__________ MPH before it started to slow down.
1st race
Copy of Co2 car Race time was 2.315
Co2 car 2Video of race at the end of track
Co2 car 3Video of race at the beginning
Views of the Co2 car
2nd race
Race day 2Video of race mid way through
Race day 2 2nd videoVideo of race at the end of track
.5 sec. + ________2.975______________sec. = _____3.475_____________ trial time EBT + CTT
.5 X ______7.25____________ = _____3.625______________
EBT + CTT ½ EBT + CTT
My car reached a maximum velocity of ___________16.55__________ MPH before it started to slow down.
.8 sec. + _________2.975_____________sec. = ____3.775_________________
trial time EBT + CTT
60 feet divided by ________3.625______________ = ________16.55___________
½ EBT + CTT max. velocity
3rd race
3rd race video Vidoe of race track at start
3rd 2raceVideo of race track mid way through
.5 sec. + ________4.18______________sec. = _____4.68_____________ trial time EBT + CTT
.8 sec. + _________4.18_____________sec. = _________4.98____________
trial time EBT + CTT
.5 X ______9.66____________ = _____4.83_____________
EBT + CTT ½ EBT + CTT
60 feet divided by ________4.83_____________ = ________12.42___________
½ EBT + CTT max. velocity
My car reached a maximum velocity of ___________12.42__________ MPH before it started to slow down.
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