Aerospace Engineering - Chapter 1 - Part 1

Introduction to Aerospace Engineering (B) Part 1

Overview

  • Course Recognition:

    • National-level Excellent Course (2004)

  • Target Audience:

    • Required for all first-year undergraduate students.

  • Objective:

    • Introduce basic concepts of aircraft, including flight principles, aircraft structure, engine, and aircraft systems.

    • Cultivate enthusiasm and love for aviation among students in addition to understanding fundamental principles.

Course Outline

Chapter 1: Development of Aerospace Engineering (6 hrs)

  • 1.1 Basic Concepts of Aerospace Engineering

  • 1.2 Classification of Flight Vehicles

  • 1.3 Development of Aerospace Engineering

Chapter 2: Flight Environment and Principle (6 hrs)

  • 2.1 Flight Environment

  • 2.2 Basic Concept of Aerodynamics

  • 2.3 Aerodynamic Forces

  • 2.4 Flight Performance

  • 2.5 Basic Concepts of Helicopter

  • 2.6 Basic Concepts of Spacecraft

Chapter 3: Flight Vehicle Power (2 hrs)

  • 3.1 Category of Engines

  • 3.2 Piston Engine of Aircraft

  • 3.3 Jet Engine of Aircraft

  • 3.4 Rocket Engine

  • 3.5 Combined Engine

Chapter 4: Airborne Equipment (2 hrs)

  • 4.1 Flight Instrument

  • 4.2 Flight Navigation System

  • 4.3 Flight Automatic Control System

Chapter 5: Flight Vehicle Structure (2 hrs)

  • 5.1 General Requirements

  • 5.2 Aircraft Structure

  • 5.3 Spacecraft Structure

  • 5.4 Structure of Rockets and Missiles

Chapter 6: Onsite Class (6 hrs)

  • 6.1 Flight Vehicle

  • 6.2 Aircraft Flying Principle

  • 6.3 Aircraft Structure

Curriculum Plan

  • Total Theoretical Teaching: 18 hrs

  • Onsite Teaching: 6 hrs at Aerospace Museum

  • Classroom Subgroups: 252542, 252543, 252535

Evaluation Criteria

  • Final Exam: 50%

  • Regular Performance: 40% (includes homework, discussion, and presentations)

  • On-the-spot Performance: 10%

Chapter 1: Development of Aerospace Engineering

1.1 Basic Concepts of Aerospace Engineering

Importance

  • Aerospace engineering signifies the human expansion into the atmosphere and space.

    • It has emerged as one of the most influential fields of science and technology in the 21st century.

    • Represents the advanced level of science and technology in a country.

    • Combines modern science and technology and involves high costs, risks, technology, and added value.

  • Application Fields:

    • Commercial and military aerospace technology serves as a vital indicator of a nation's comprehensive strength.

    • Includes manned space engineering, space exploration, and advanced engineering in aviation.

Key Definitions

  • Aviation: Navigation of manned or unmanned aircraft in Earth's atmosphere, requiring air medium and lift to counteract gravity.

  • Classification of Aviation: Divided into military and civil aviation.

1.2 Classification of Flight Vehicles

  • Flight vehicles are categorized into three groups:

    • Aircraft: Operate within the atmosphere. Must generate upward lift to ascend.

    • Spacecraft: Operate beyond the atmosphere and must overcome Earth's gravity.

    • Rockets and Missiles: Propel using rocket engines, can travel within and outside the atmosphere.

Types of Aircraft

  • Types Based on Lift Generation:

    1. Lighter than Air:

    • Balloon: Rely on buoyancy for lift.

    • Airship: Contain gas to lift.

    1. Heavier than Air:

    • Fixed-Wing: Generate lift via wings (e.g. gliders, helicopters).

    • Rotorcraft: Generate lift from rotor motion (e.g., helicopters).

Spacecraft

  • Divided into unmanned and manned spacecraft:

    • Manned Spacecraft: Human crew required to operate, equipped with life support systems.

    • Unmanned Spacecraft: Includes artificial Earth satellites and probes.

Rockets and Missiles

  • Rockets: Propelled by rocket engines, composed of a propulsion system, body structure, and payload.

  • Missiles: Weaponized vehicles designed to follow a guided trajectory to target with warheads.

1.3 Development of Flight Vehicles

Historical Context

  • Legends and Myths:

    • Various cultures (e.g., China, Greece, India) developed myths related to flight, illustrating early human imagination and aspirations for flight.

Early Exploration and Innovations

  • Notable ancient accounts of flight include:

    • Early Chinese kites, gliders, and principles of aviation and buoyancy identified by historical legends.

    • The Montgolfier brothers (1783) successfully launched a hot-air balloon.

    • Aviation's Pioneers: Kelly, Otto Lilienthal, and the Wright brothers contributed to the theoretical and practical development of flight.

    • The Wright brothers achieved the first controlled powered flight with Flyer 1 on December 17, 1903.

Summary of Key Milestones in Aviation Development

  • 1903: Wright Brothers' Flyer 1 achieved first powered flight.

  • 1919: First regular passenger air route launched in Germany.

  • 1947: Bell X-1 completed the first supersonic flight.

  • Noteworthy innovations include the shift from traditional aircraft to jet propulsion systems with models like Boeing 707 and Boeing 747 establishing commercial air travel.

Conclusion

  • The documentation of aerospace history illustrates the remarkable technological evolution and its implications on military, economic, and social dimensions significantly impacting modern human endeavors in both civilian and defense sectors.