Egg-O-Naut

Purpose The purpose of this project is to practice the process of Engineering Design.

Overview Each group will be responsible for building a rocket and a capsule out of a 1 L bottle The rocket should have a capsule attached to it that can carry an egg. Your goal is to get the capsule to detach and have the egg land without breaking. Each team will be given 3 trials during a practice run to change a variable and record the results The final trial will be scored to determine the class winner and will be incorporated into your grade

Rules Overview Each team will be provided a 1 liter plastic carbonated beverage bottles. Openings on the bottles must be 2.2 cm inside diameter Labels may or may not be removed. If removed, must be presented at the safety inspection to confirm it is a carbonated beverage bottle

Rules Overview The integrity of the pressure vessel must not be compromised, i.e., no hot glue, no sanding, no super glue, no cuts. Acceptable glues are polyurethane based adhesives and tapes The integrity of the pressure vessel must not be compromised Metal can be used, but may not contact the pressure vessel. No sharp or pointed metal components or rigid spikes allowed on the end

Rules Overview No commercial rocket parts All rockets will be launched using the launcher provided by the supervisor All fins and other add-ons must be at least 2 cm above the level of the flange on the bottle’s neck All energy will be from water/air pressure. No other potential kinetic source of energy is permitted

Launcher I will supply the launcher and pump. Each team will launch their rockets at 60 psi. You will be allowed 3 practice trials and one trial for the class competition. The practice trials will take place during one class. Please plan on changing one variable for the 3 practice trials.

Rules Overview I will provide the egg and it will be marked in a way that will insure that teams are using the eggs provided. Rockets must be built so that the egg is easily removed. Nothing may be adhered to the egg.

Rules Overview The rocket and each part that is intended to separate must be clearly marked so that it can be identified by the team and judge. The part of the rocket containing the Egg- o-naut should be brightly colored if it is to detach from the rocket.

Launching Teams must bring and wear spectacles/goggles for loading, launching and retrieving their rockets and Egg-o-nauts. After inspection of each rocket, teams will receive 1 egg per rocket, add water and load their egg in the rocket. Once called to launch, teams will have a total of 5 minutes to launch.

Launching All rockets will be launched at 60 psi. Once the rocket is pressurized, students may not touch or approach the rocket. Time aloft will be recorded to the nearest hundredth of a second. Timing starts when launched from the launcher and stops when the Egg-O-Naut or portion of the rocket containing the egg touches the ground, comes to rest on a tree, building or other obstruction, or goes out of sight. 3 timers are preferred.

Scoring Teams will retrieve their rockets and show the rocket or capsule with the Egg-O-Naut to an event inspector. The Egg-O-Naut capsule or wrapping must be opened in the presence of an event official. If the Egg-O-Naut or portion of the rocket containing the egg that completely detaches from the pressure vessel will receive a 3 second bonus. Any type of free fall recovery system is allowed. Rocket parts that do not remain linked while aloft will not be disqualified or penalized.

Scoring Egg-O-Nauts that can be retrieved and survive will receive a 15 second bonus. Survival is defined as not cracking the egg enough to leave a wet spot on a paper towel. If the Egg-O-Naut cannot be retrieved, it will not receive the 15 second bonus The rocket score is the time aloft plus the bonus seconds for the Egg-O-Naut capsule separation and bonus seconds for the survival. The rocket with the longest time will be the score for the team

Scoring Construction violations will be scored as followed:  Rockets that violate a safety related construction rule will not be launched and will receive only participation points  Teams having other construction violations will be ranked below other teams  Tiebreakers will be the better score of the other rocket

Recovery Systems Parachutes  SHAPE: Round, Rectangular, Airfoil… which is best?  MATERIAL: Plastic (trash bag, tablecloth, drop cloth), Paper, Cloth???  CONNECTION: More strings or less?  PACKING: How to fold the chute PACKING Consistency is key!

Your Job 1. Follow the engineering design process for your rocket and capsule. 2. Research your ideas 3. Make a technical drawing of your rocket and your capsule 4. Build and test your rocket and capsule 5. Test your rocket and capsule 6. Make changes to your rocket and capsule and record the effectiveness of your changes 7. Write a lab report detailing one variable that you changed and the impact it had on the performance of the rocket – this is what you will be graded on!

Materials You can use your own materials if you like as long as they meet the rules I will provide you with: A 1 L bottle for your rocket Fin materials-cardboard styrofoam cold glue gun Parachute materials – String, plastic, and cloth Construction paper

Websites Nationals Science Olympiad  NASA  Back glide Construction  General Resource and Information   A Construction site 