AIRSHIPS AND BALLOONS

 

AIRSHIPS AND BALLOONS Are Known As        

Lighter- Than-Air Aircraft Because, Instead Of

Wings, They Use A Large Envelope, Or Bag

Full Of Gas Or Hot Air That Is Lighter Than The

Air In The Atmosphere Around It. The Air

Dushes The Envelope Upwards, Just As Water 

Pushes a Submerged Air-Filled Ball Upwards. In 1783, The

Montgolfier Brothers Achieved The First Manned

Flight Ever By Sending A Hot-Air Balloon Over

Paris. Balloons Fly Where The Wind Blows Them;

Airship have engines and can be steered.

Today airships are used for aerial filming and coast guard

patrols, and ballooning is a popular sports

ANATOMY OF A MODERN AIRSHIP

The Main Part Of An Airship Is Its Envelope, Which Contains Bags Of Helium Gas The Gas Is Slightly Pressurized To Keep The Envelope In Shape A Fin And Tailplane Keep The Airship Steady As It Flies Slowly Along The Crew Travels In A Gondola Attached To The Underside Of The Envelope

 TYPES OF AIRSHIPS

Practical Airships Could Be Built Only After The Light Weight Internal Combustion Engine Had Been Developed. The Earliest Airships Were ‘Nonrigid’ (  They Are Still Used Today ) These Were Followed The ‘Rigid’ And The Less Usual ‘Semirigi’d Types Of Airship

                                           

                                  

NON RIGID AIRSHIP                                                         

Have a flexible fabric envelope,from which The load hangs, suspended by ropes

 RIGID AIRSHIPS

 Envelope is built around  a rigid framework. This skeleton contains bags  of the lifting gas-helium

BALLOONS

Balloons Were First Used For Aerial Reconnaissance During The French Revolution, And Used Again In The American Civil War. During World War 1 And 2. Balloons Were Used To Spot Targets For Artillery Attacks And Barrage Balloons Defended Cities Against Aircraft

WEATHER AND RESEARCH BALLOONS

To Study What Is Happening In The Upper Research Of The Atmosphere Pilots Send Up Helium Filled Weather Balloons. These Carry Instruments Which Measures Temperature, Wind Speed And So On And Send Their Results To The Ground Or To Satellites By Radio

FLIGHT

Hot Air Balloons Required  A Perfectly Clear Day With The Gentle Breeze. Too High A Wind Put The Balloons At Risk On Takeoff And Landing After Takeoff A Ground Crew Follow The Balloons In A Vehicle To Recover Both It And The Crew After Landing

STAGE 1

The Balloons Is Laid On The Ground, Burners Heat Air To Fill The Balloons 

STAGE 2

The Balloons Envelope expand As The Hot Air starts To Fill It 

STAGE 3

The Guy Rope Hold The Balloons Down Until The Crew Boards 

STAGE 4

The Crew Blast Hot Air Into The Envelope To Keep The Balloons Float

 

for further refer 

https://en.wikipedia.org/wiki/Hot_air_balloon

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