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Recruit Training Flight. Lesson 3 Part 1 History of Flight. Objectives. Describe the evolution of manned flight through balloons to airships and through kites to gliders and powered aircraft. Explain why balloons and airships fly. Explain how modern airships are controlled.

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recruit training flight

Recruit Training Flight

Lesson 3

Part 1

History of Flight

objectives
Objectives
  • Describe the evolution of manned flight through balloons to airships and through kites to gliders and powered aircraft.
  • Explain why balloons and airships fly.
  • Explain how modern airships are controlled.
  • Explain why kites fly.
lighter than air craft
Lighter Than Air Craft
  • What do we mean by “Lighter than Air Craft”
how do balloons fly
How do Balloons Fly?

Help

Imagine a Balloon the size of a house!

It has ½ tonne of Helium.

It will Displace about 4 tonnes of Air.

The difference between these 2 weights is the Lifting Force.

how do balloons fly1
How do Balloons Fly?

Hot Air inside the Balloon is Less Dense than the Air Outside.

key dates in history
Key Dates in History
  • 1452 - 1519
  • Leonardo De Vinci designed and attempted to build flying machines, including winged flight and the first helicopter design.
key dates in history1
Key Dates in History
  • 25 April 1783
  • The Montgolfier Brothers demonstrate their hot air balloon in Paris.
  • A balloon 12 meters in diameter rose to a whopping 305m (1000ft) in the air.
  • 19 September 1793
  • The Montgolfier Brothers put animals into their balloon, thus launching the first “passenger” carrying flight.
the montgolfier brothers
The Montgolfier Brothers

25 April 1783

Demonstrate their balloon in Paris. Rose to 305m

19 September 1793

Put the first animals into the balloon, becoming the first passenger flight.

Montgolfier Brothers

key dates in history2
Key Dates in History
  • 1 December 1793
  • Jacques Charles flew his balloon 27 miles (43km) witnessed by 400,000 people.
  • His pioneering balloon was filled with a Lighter Than Air gas….
  • Hydrogen.

Hydrogen filled balloon

key dates in history3
Key Dates in History
  • 27 August 1784
  • James Tytler flies the first Hot Air Balloon on a trip of ½ of a mile.
how are airships controlled
How are Airships Controlled?

Helium

Air Pump

Tail Arrangements

Air Valves

Ballonets

airships ascends
Airships- Ascends

Helium

Air Pump

Tail Arrangements

Air Valves

Ballonets

Contract

Air released into atmosphere reducing weight and

allowing the Helium gas to expand, giving more Lift.

airships descends
Airships- Descends

Air Pump

Ballonets

Expand

Air pumped into the Ballonets adding weight and

compressing the Helium gas so that Lift is reduced.

airships problems
Airships – Problems?

Hindenberg Disaster – 6 May 1937

What was it

filled with?

Hydrogen!

watch this
Watch This..
  • Click here to see a video about the Hindenburg Disaster.
  • http://www.youtube.com/watch?v=GK4pycNHwg8
questions
Questions
  • In which year did the Montgolfier brothers first fly their Hot Air Balloon?
    • 1673.
    • 1783.
    • 1883.
    • 1973.
questions1
Questions
  • Who first flew a man-carrying Hydrogen-filled Balloon?
    • Leonardo da Vinci.
    • Montgolfier.
    • Charles.
    • De Rozier.
questions2
Questions
  • What are modern Airships filled with?
    • Helium.
    • Hydrogen.
    • Butane.
    • Propane.
questions3
Questions
  • An Airship rises when:
  • The Ballonets empty and the Helium gas expands.
  • The Ballonets empty and the Helium gas is compressed.
  • The Ballonets are filled with air and the Helium gas is
  • compressed.
  • The Ballonets are filled with air and the Helium gas expands.
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