3.4 | The Rocket Equation: Why 95% Fuel Won’t Cut It | Rocket Science with Yale’s Marla Geha episode artwork

EPISODE · Sep 3, 2026 · 15 MIN

3.4 | The Rocket Equation: Why 95% Fuel Won’t Cut It | Rocket Science with Yale’s Marla Geha

from YaleCourses · host YaleCourses

Ever wondered what determines how fast a rocket can go, or why NASA doesn't launch rockets with household items like baking soda and vinegar? In this lesson, we delve into the powerful Rocket Equation (also known as the Tsiolkovsky equation), which describes the maximum speed a rocket can achieve by burning its own fuel. You'll learn how this fundamental equation, inspired by the simple act of throwing rocks from a boat, reveals the critical relationship between exhaust velocity, mass ratio, and the elusive Delta-V needed for space travel.🎯 Learning Objectives• Define the rocket equation and explain its significance in determining a rocket's maximum speed.• Analyze the roles of exhaust velocity and the initial-to-final mass ratio (fuel ratio) in the rocket equation.• Understand why a remarkably high percentage of a rocket's launch mass must be fuel to reach orbit.• Compare the effectiveness of different propellant types based on their exhaust velocities, using examples like liquid hydrogen and the baking soda-vinegar reaction.• Relate Newton's laws of motion to the principles governing rocket propulsion as described by the rocket equation.📚 About the CourseThis course is an intuitive introduction to rocket science in our everyday lives.Modern life increasingly depends on technology provided by Earth-orbiting satellites, from detailed weather predictions to broad-band internet and GPS. How are satellites launched into orbit and how do they work once they get there? Why are rockets used to get into orbit and how are they different from airplanes? This introductory course is aimed at a wide non-technical audience and is appropriate for all ages. 📺 Watch the full playlist on YouTube: https://www.youtube.com/playlist?list=PLh9mgdi4rNexC1fSWLlpQx_Gjj_0DhjVE 🎓 Enroll on Coursera for assessments and a certificate: https://www.coursera.org/learn/rocket-science-for-everyone 🌐 Explore more learning opportunities on Yale Online: https://online.yale.edu/courses/rocket-science-everyone #Yale #RocketScience #OnlineLearning #YaleOnline #STEMEducation #SpaceTech #ScienceForAll #LearnOnline Learn more about your ad choices. Visit megaphone.fm/adchoices

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3.4 | The Rocket Equation: Why 95% Fuel Won’t Cut It | Rocket Science with Yale’s Marla Geha

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