lighter than air airship 1
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Lighter Than Air Airship : How we can be
benefit
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Introduction• Lighter than air
–Lower density than normal air (less than 1.2 kg/m3 )
–Float in the air–Helium, Hydrogen, or Hot air–Operate on “Aerostatic” principles
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Lighter than air – aerostats
Heavier than air – aerodynes
• Fixed-wing aircraft• Rotorcraft
• Free balloons• Moored balloons• Airships
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Air Ships
• Types–Non-rigid (or blimps)–Semi-rigid and –Rigid
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• Lifting gases–Hydrogen
•greatest static lift•Flammable
–Helium•Safe •Expensive
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• Operation–Steering
• heading was controlled by rudders
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• Operation–Pitch and Altitude Control
• Pitch was controlled by the ship’s elevators
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• Operation–Lifting
Ballonet
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• History–First primitive airship by a
French experimenter Henri Gifford in 1852
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–Count von zeppelin began experimenting with rigid airship designs in the 1890
– March 1912 Italian forces use dirigibles for reconnaissance
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–Zeppelin was used for long range scout and naval operations in WW I
–Raids began by the end of 1914
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–United States used more than 10 airships in WWII
–Primary airship tasks were patrol and convoy escort
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• The ”Hindenburg disaster” shattered public confidence in airships
May 6, 1937
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Modern Airships and Usage
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• Heavy lifting–Airships could be employed for cargo
transport
– Delivering extremely heavy loads to areas with poor infrastructure over great distances (Roadless trucking)
–Heavy lifting over short distances
Commercial Usages
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• Passenger transport• Tourism• Platforms for TV camera crews• Advertising
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Military Usages• Surveillance
– Tethered Aerostat Radar System (TARS) used in surveillance for drug interdiction along the southern U.S. border
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–U.S. troops deployed 25-foot long aerostat operates at only 300 feet above the battlefield and carries daytime and night vision cameras.
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• Communication–Can be used as communication
platforms
–Secure connectivity among all forces
–For remote locations where no infrastructures
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• Command and Control–Locate friendly and enemy forces–Detect targets on an extended
battlefield at a minimal exposure to enemy forces
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• Navigation assistance
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• Battle management
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• Monitor radio conversations
• Detect missiles –Track the missile and guide an
intercepting weapon. –This process is called “fire control.”
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• Convoy picketing
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Conclusion• Airships have more than 150 years of
history in flying
• They were use for both military and commercial uses
• Both WWI and WWII airships were widely used for military activities
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• With the rapid development of “Heavier-than-air” craft, air ships lost its position in the sky
• Presently, with the technology airships are made to give reliable service.
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Thank you !
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