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Uncontrolled copy not subject to amendment

Uncontrolled copy not subject to amendment. History of Flight. Revision 1.00. Map Reading. Learning Outcome 1: Have an appreciation of the history of lighter-than-air craft and the methods of control applied to airships. Objectives.

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  1. Uncontrolled copy not subject to amendment History of Flight Revision 1.00

  2. Map Reading Learning Outcome 1: Have an appreciation of the history of lighter-than-air craft and the methods of control applied to airships

  3. Objectives • Describe the evolution of manned flight from balloons to airships. 2. Explain why balloons fly. 3. Explain how modern airships are controlled.

  4. History of Flight Man takes to the Air!! Or does he? Leonardo da Vinci 1452 - 1519

  5. History of Flight Etienne Montgolfier 6 Jan 1745 – 2 Aug 1799 Joseph Montgolfier 26 Aug 1740 – 26 Jun 1810 Hot Air Balloon 12m diameter, Rose 305m (1000 ft). 25 April 1783 Annonay in France

  6. History of Flight 19 September 1793 King Louis XVI not impressed, but did offer finance. Montgolfier Brothers

  7. History of Flight Died with Pierre Romain trying to cross the English Channel. 30 Mar 1754 – 15 Jun 1785 Francois Pilatre de Rozier with Marquis d’Alandes, 9km flight.

  8. History of Flight Hydrogen filled balloon Jacques Charles 12 Nov 1746 – 7 Apr 1823 1 Dec 1793 Flew 43 km (27 miles) Witnessed by 400,000 people.

  9. History of Flight First Flight on 27 Aug 1784. 30 ft diameter/40 ft high. Filled with Hot Air. Flew half a mile and 350 ft high. James Tytler 1745 - 1804

  10. Help How do Balloons Fly? 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.

  11. How do Balloons Fly? Hot Air inside the Balloon is Less Dense than the Air Outside.

  12. Airships

  13. Helium Air Pump Tail Arrangements Air Valves How are Airships Controlled? Ballonets

  14. Helium Air Pump Tail Arrangements Air Valves Airships- Ascends Ballonets Contract Air released into atmosphere reducing weight and allowing the Helium gas to expand, giving more Lift.

  15. Air Pump Airships- Descends Ballonets Expand Air pumped into the Ballonets adding weight and compressing the Helium gas so that Lift is reduced.

  16. Airships – Problems? Hindenberg Disaster – 6 May 1937 What was it filled with? Hydrogen!

  17. The Present Stephane Rousson (39) At 8 am, on 28 Sep 08, Stephane Rousson attempted to cross the English Channel from Hythe in Kent to Wissan in France. The attempt failed 11 miles from the destination due to strong headwinds. He was recovered by boat to France.

  18. The Future

  19. Objectives • Describe the evolution of manned flight from balloons to airships. 2. Explain why balloons fly. 3. Explain how modern airships are controlled.

  20. Questions • In which year did the Montgolfier brothers first fly their • Hot Air Balloon? • 1673. • 1783. • 1883. • 1973.

  21. Questions • Who first flew a man-carrying Hydrogen-filled Balloon? • Leonardo da Vinci. • Montgolfier. • Charles. • De Rozier.

  22. Questions • What are modern Airships filled with? • Helium. • Hydrogen. • Butane. • Propane.

  23. 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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