WATER BOTTLE ROCKETMEASUREMENTS

1 centimeter

NOSE CONE LENGTH

Get a ruler and measure the length of the nose cone

it needs to be within 150mm – 220mm if not, unwrap

the nose cone and try again.

NOSE CONE BASE DIAMETER

Using a millimeter ruler, turn the nose cone

over and measure the base diameter, it should

be within 30mm – 36mm if not, unwrap the nose

cone and try again.

FIN ROOT CHORD

FIN TIP CHORD

FIN SEMI-SPANSEMI – SPAN IS HOW FAR THE FIN STICKS OUT FROM

THE SLEEVE/BOTTLE

NOTE: THE RULER MUST BE HELD HORIZONTAL

STEP 1 : FIND THE CENTER OF THE ROOT CHORD &

PUT A MARK.

STEP 2 : FIND THE CENTER OF THE

TIP CHORD & PUT A MARK.

STEP 3 : CONNECT THE MARKS WITH A LINE USING A

RULER THEN MEASURE THE

LINE.

FIN MID-CHORD LINE

RADIUS OF BOTTLE SLEEVE

REMINDER:

RADIUS IS HALF

THE DIAMETER.

FIN SWEEP DISTANCE

NOSE TIP TO TOP OF FIN ROOT

CHORD

TRANSITION CONE FRONT DIAMETER

TRANSITION CONE REAR DIAMETER

TRANSITION CONE LENGTH

NOSE CONE TIP TO TOP OF

TRANSITION CONE

CENTER OF GRAVITY

**REMOVE THE BOTTLE CAP**

BALANCE THE ROCKET ON THE

BLOCK OF WOOD TO FIND THE CENTER OF

GRAVITY

USE A PENCIL TO MARK THE CENTER OF

GRAVITY (MIDDLE OF THE BLOCK OF WOOD)

NOSE TIP TO CENTER OF GRAVITY