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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