RocketReport07 - The Construction and Launching of a Rocket...

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# The Construction and Launching of a Rocket with the Mission Objective of Keeping an Egg Intact without use of a Parachute. This rocket competition challenged aerospace majors to design a rocket that would be able to launch and retrieve an egg without the egg breaking, or with the aid of a parachute. Team __________ used a combination of suspending the egg in a viscous material and an umbrella to prevent their egg from cracking.________’s efforts proved noteworthy when their egg was shown to be unscathed after their wondrous flight. Nomenclature AC Aerodynamic Center CG Center of Gravity w weight h height C l coefficient lift C d coefficient drag v velocity k 1 2  C d A р air density A rocket cross-sectional area q T mg k T motor thrust 1 m mass g acceleration of gravity; 9.81 m/s 2 x 2kq m y b altitude at burnout y c coasting distance y t apogee I. Introduction Exactly when the first flights of rockets occurred is contested, some say that the first recorded use of a rocket in battle was by the Chinese in 1232 against the Mongol hordes. Modern rockets were born when a supersonic nozzle was attached to a liquid fuelled rocket engine's combustion chamber. These nozzles more than doubled the thrust and raising the engine efficiency from 2% to 64%. Early rockets had been grossly inefficient because of the heat energy that was wasted in the exhaust gases. #Undergraduate Student, California Polytechnic State University, San Luis Obispo Page 1 of 6
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II. Design A. Alternative Designs There were several designs that _______considered before and during construction. The first design was to cut the body of the rocket into vertical sections and have the motor casing separate from the body. The reverse thrust during the flight would pop the motor casing off and a spring would force the sections of the body up, creating wings. The nose cone would spiral slowing down, carrying the egg with it. The motor casing would be attached to the nose cone and act as a weight to insure that it would stay upright in order for the wings to work properly. In retrospect __________ should have kept this concept because the most successful rockets utilized some form of this idea during the competition. But Team ___________ was unsure if the materials they had would be strong enough to withstand the force acting on
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This note was uploaded on 04/16/2008 for the course AERO 121 taught by Professor Dr.p during the Fall '08 term at Cal Poly.

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RocketReport07 - The Construction and Launching of a Rocket...

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