T1: Rocket Science
To extend our reach to the stars
above!Video
Introduction
Goals:• Predict apogees
Rocket equationSimulation
• Build/Test RocketsDifferent models, masses, engines, etc.
• Analyze/compare resultsApogee vs. massAcceleration vs. massApogee vs. engine type
Forces On A Rocket
cg
cpweight
drag
lift
thrust
Rocket Equations
Tsiolkovsky
Our Theory
Newton’s Second Law
Rocket Stability
Simulation
OpenRocket—Sampo Niskanen
Computer Rocket Model
Results From OpenRocket
Construction
The Generic E2X
The Viking
The Alpha
Launch: Trajectory
Launch: Measurements
Angle Gun
Timers
AltimeterVideo
Analysis
Experimental Problems
•Malfunctioning batteries
•Shock-cord snap
•Rocket explosion
•Nose cone explosion during descent
•Rocket with altimeter stuck in tree for 4 days
Data: Simulation
Data: Mass vs. Apogee
Analysis: Mass vs. Apogee
Results showOur rocketsCan flyKind of highExemplifying a negative and nonlinear Trend
Data: Mass Vs. Acceleration
Data: Engine Type vs. Apogee
ConclusionMass vs. apogee → exponential, negativeEngine vs. apogee → logarithmic, positiveMass vs. acceleration → cubic polynomial
To optimize model rocket flight, rocket mass must be minimized while still maintaining the center of gravity above the center of pressure. Additionally, upgrading the engine class makes the rocket go higher. These graphs present the optimal conditions for highest apogees.
Pictures
References
1. Barrowman J. 1970. Stability of a Model Rocket in Flight [Internet]. Phoenix(AZ):Centuri Engineering Company; [cited 2014 Jul 28]
2. Kenzie, Patrick. Rocket Components. 2005. Canuck Designs. Rocket Componenets. Web. 28 July 2014.
AcknowledgementsJohn and Laura
OverdeckNJGSS Alumni and
Parents Drew University
State of New JerseyIndependent College
FundNovartis
AT&TBayer Healthcare
Johnson & JohnsonActavisCelgene