Lesson Notes By Weeks and Term - Senior Secondary 3

Engine

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TERM – 1ST TERM

WEEK FIVE

Class: Senior Secondary School 3

Age: 17 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: ENGINE

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Define a gas turbine engine

II.) Describe the constructional Differences Between Gas Turbine Engines

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher explains the meaning of gas turbine engine

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher discuss the onstructional differences between Gas Turbine Engines

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

ENGINE

A gas turbine engine, also known as a jet engine, is a type of internal combustion engine that converts fuel into mechanical energy by burning the fuel in a stream of compressed air. Gas turbine engines are commonly used in aircraft propulsion, power generation, and various industrial applications due to their high power-to-weight ratio and efficiency.

A simple gas turbine engine

Constructional Differences Between Gas Turbine Engines

  1. Aircraft Gas Turbine Engines: They are designed for aircraft propulsion, these engines are optimized for high thrust-to-weight ratios and efficiency.

   - Construction typically includes a compressor section, combustion chamber, turbine section, and exhaust nozzle.

   - Compressor blades compress incoming air, which is mixed with fuel and ignited in the combustion chamber.

   - The expanding gases drive turbine blades, which in turn drive the compressor, as well as the aircraft's propulsion system.

   - Exhaust gases exit the engine through a nozzle, producing thrust.

  1. Industrial Gas Turbine Engines: Used for power generation, marine propulsion, and other industrial applications.

   - Construction is similar to aircraft engines but may vary depending on the specific application and requirements.

   - Industrial gas turbines may feature additional components such as power turbines, gearboxes, and generators for electricity generation.

   - These engines are often larger and more robust than aircraft engines, designed for continuous operation and reliability in industrial settings.

  1. Micro Gas Turbines: Smaller-scale gas turbine engines used for small-scale power generation, distributed energy systems, and propulsion in unmanned aerial vehicles (UAVs).

   - Construction is compact and lightweight, with fewer components compared to larger gas turbines.

   - Micro gas turbines may incorporate innovative materials and manufacturing techniques to achieve high efficiency and power density in a small package.

EVALUATION: 1. What is gas turbine engine?

  1. Identify 3 types gas turbine engines
  2. Describe the construction difference between industrial gas turbine engine and micro gas turbine engine

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively