Rocket propulsion - Study guides, Class notes & Summaries

US Army Space Cadre Basic Course (ASCBC): Day 2 Review; Questions and Correct Answers 100% Solved 2024/2025 The significant contributions of Dr. Robert Goddard - Correct Answer -developed mathematical theories of rocket propulsion -developed gyroscopic control -developed steering by means of vanes -developed gimbal steering Dr. Robert Goddard is considered to be the _________ . - Correct Answer Father of modern rocket propulsion Dr. Wernher von Braun developed the _______ . - Correct A...

1. Which of Newton's Laws describes how a rocket works? Action - Reaction: Newton's Third Law 2. Explain the difference between Thermodynamic and Electrodynamic propulsion systems used on spacecraft --Thermodynamic (heat/pressure energy) i. Cold gas ii. Liquid chemical Monopropellant Bipropellant iii. Solid chemical iv. Hybrid chemical v. Nuclear thermal vi. Arc-jet vii. Resisto-jet viii. --Electrodynamic (electromagnetic energy) i. Ion thruster ii. Plasma rocket 3...

In a neutral burn for a solid rocket, thrust does what over time? (increases, decrease, remains constant) Remains constant This kind of rocket is often referred to as the safest kind of rocket, combining both solid fuel and liquid oxidizer. Hybrid Rocket In a progressive burn for a solid rocket, thrust does what over time? (increases, decreases, remains constant) Increases In a regressive burn for a solid rocket, thrust does what over time? (increases, decreases, remains constant) Dec...

Thrust T = ma Thrust term (pe - pa) > 0 Drag term (pe - pa) < 0 Overexpanded Nozzles have pressure losses (drag penalty) Underexpanded Nozzes have gains (thrust contribution) matched condition The highest thrust is generated when nozzle expansion ratio operates such that pe = pa Impulse Total momentum change imparted during a burn Specific Impulse Total Impulse/Weight of propellant Isp A measure of fuel efficiency; a measure ...

in SRMs, the propellant is contained and stored directly in the combustion chamber grain -solid body of the hardened propellant -accounts for 82 to 94% of total motor mass -burns on its exposed inner surfaces igniter -provides the energy to start combustion -electrically activated nozzle -accelerates the hot gas -made of high temp materials -hot reaction gases flow along perforation or port cavity toward nozzle because there is no active cooling... the motor...

What are advantages of an end burning charge? Highest value of loading fraction What are the main component of solid rocket motors? Ignitor, casing and insulation, solid propellant grain, nozzle What are solid rocket propellant's classes? colloidal, composite, and CMDB What are properties of colloidal propellants? unstable, homogenous, can combust without other materials What are properties of composite propellants? stable, higher performance, better burn rate c...

Action or process of pushing or pulling to drive an object forward propulsion fuel + oxidizer propellant 2 categories of rocket engine liquid rocket solid rocket it pumps the propellant to the combustion chamber (liquid rocket) pump fuel and oxidizer mixture is burning inside combustion chamber generates spark to burn propellant (liquid rocket) igniter Convert liquid propellant into small droplets to burn it easily (liquid rockets) fuel injector ...

What country had the first rocket? China Space Shuttle a space transportation system for traveling to space and back to Earth Spin stabilization a technique that was invented by William Hale. Escaping gases hit small veins that make it spin, and stabilize like a bullet What are the characteristics of cumulus clouds? White, billowy, and puffy. Appears like a cotton ball What are the characteristics of the thermosphere? It begins at about 50 miles up and extends to about 300 miles. Here th...

Newton's third law For every action there's and opposite and equal reaction Two different types of propulsion Liquid, solid Combustion You need fuel, oxygen, heat, and exhaust to create a boom. Four forces on rocket Weight, thrust, drag, lift Rocket Stability Center of gravity ahead of center of pressure with respect to airflow along rocket Impulse equation force x time When air exits throat Density starts to decrease