Purpose: To design,
construct, and launch an air pressure-fueled rocket containing a raw
chicken egg and have the rocket return to Earth with the egg in an
intact, unbroken condition.
Rule A: Scoring
Design Portfolio shall have a value of 20 points and must be
turned in during registration. The Design Portfolio must include the
a. Cover sheet with appropriate information
(include several to demonstrate the
(1) Group members
(3) Mentors (if any)
b. Scaled drawings of rocket during design phase
c. Materials used
d. Procedure used in construction
e. A table containing a least one modification made between
design and final product
and (1) Why the change was made
(2) Positive / negative effect(s) of the change
The Aesthetic Evaluation shall have a value of 10
points and will be conducted using the following criteria:
a. Exterior decorations
d. Overall appearance
The Performance Evaluation shall be determined by
measuring the total elapsed time between launch and landing of the
rocket, and determination of the unbroken survival of the raw egg.
The Rocket Weight (without fuel or egg) will be
determined to serve as a tie breaker.
Rule B: Determining Winners
will receive a blank copy of the scoring rubric used in determination
The team having the greatest number of total points (Design
Portfolio + Aesthetic Evaluation + Performance Evaluation)
shall be declared the winner.
The Performance will have the greatest weight (see the
Scoring Rubric).In the event
of a tie after determination in #2, the mass of the rocket without
fuel or egg will be used; the rocket with lighter mass will prevail in
the event of a tie after all other categories are determined.
Any team which violates any of the following
design/performance rules (C-F) will be disqualified and their points
will not be used in determining winners.
Rule C: The Rocket
rocket shall be fueled only with compressed air, water, or a
combination of compressed air and water. The construction team will
determine the quantity of water. Air pressure shall be set at 80 psi.
No other source of potential or kinetic fuel may be used.
The fueled section of the rocket shall be made of a 2-liter
plastic soft drink bottle with an opening of 21mm internal diameter
(ID). This opening will be the rocket nozzle which, when the
rocket is mounted for launch, will be the bottom of the rocket. The
external threads around the rocket nozzle must not be covered in any
The fueled section must have a cone section
attached; however, no metal parts may be used in the cone section.
a. The cone section must be capable of containing one
raw, grade A, extra large chicken egg.
b. The construction team may determine the size and
shape of the cone section; however, it must be
designed so that the egg can be placed into the cone
section at launch time, then sealed.
c. The cone section should be designed so that the egg
receives maximum protection upon its return to earth.
Eggs will be provided at the launch site; eggs must be
loaded into the cone in the presence of a judge.
The fueled section may have fins attached; however, no
metal parts may be attached
to the rocket.
a. The presence of fins and the number of fins shall be
determined by the
b. Fin height, if used, shall be defined as the distance from
the fueled section
perpendicular to the greatest tip of the fin.
c. No single fin shall have a fin height greater than 40% of
the total length of the
d. Fins may not extend below the bottom of the rocket