Lesson Notes By Weeks and Term v4 - SHS 2
Aerodynamics and Propulsion
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Aerodynamics and Propulsion
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Subject: Aviation And Aerospace Engineering
Class: SHS 2
Term: 1st Term
Week: 4
Grade code: 2.1.2.LI.2
Strand code: 1
Sub-strand code: 2
Content standard code: 2.1.2.CS.3
Indicator code: 2.1.2.LI.2
Theme: Core Concepts in Aerospace Engineering
Subtheme: Aerodynamics and Propulsion
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Welcome, future aerospace engineers! Today, we are exploring one of the most fundamental forces in aviation: Thrust. Thrust is the force that pushes an aircraft through the air. Have you ever seen the Zipline drones delivering medical supplies in rural Ghana, or watched a large passenger plane take off from Kotoka International Airport? The power that moves them forward is thrust. Understanding how to calculate this force is the first step in designing aircraft that can carry people, goods, and even travel to space.
This section breaks down the core principles and mathematical formulas needed to understand and calculate thrust. A. What is Thrust? The Foundation: Newton's Third Law
At its core, thrust is a reaction force. It is perfectly described by Newton's Third Law of Motion: *For every action, there is an equal and opposite reaction.* Action: An engine pushes a mass of fluid (air or exhaust gas) backwards. Reaction: The fluid pushes the engine—and the aircraft it's attached to—forwards.
Think of letting go of an inflated balloon. The air rushes out the back (action), and the balloon flies forward (reaction). All propulsion systems work on this principle.
Thrust (T) is a force, so its SI unit is the Newton (N). B. The General Thrust Equation