Questions tagged [airship]

An airship, or dirigible, is a lighter-than-air powered craft typically using helium, or historically hydrogen, as the lifting gas.

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21
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9answers
6k views

Why are airships not more popular?

There is this question but I am hoping for more general answers to why airships are not more commonplace. The previous question does bring up the cost of production (mainly because of hi-tech fibers ...
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2answers
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How do blimps control altitude?

If you have an airship filled with helium, how can you adjust your altitude? i.e. how do you "go up" or "go down"? Even staying still would be a challenge: The way I see it, you'll never have ...
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5answers
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Could I build an airship (rigid dirigible) that used a vacuum rather than lifting gas?

There are other questions (c.f. What gas is used in airships to give them buoyancy?) that discuss the use of lifting gasses such as Helium and Hydrogen in airships. Helium is rare and Hydrogen is ...
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2answers
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Longitudinal stability of airships: How is the critical speed defined?

Airships are unstable in pitch above a certain speed, called the critical speed. What causes the instability, how does it manifest itself for the pilot, and how is the critical speed defined and ...
12
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2answers
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What materials are used for the gas bags in hydrogen airships?

I heard that to construct a hydrogen blimp or airship, the gas bag must be coated with aluminium, which got me confused: doesn't it add significantly to the weight? Is aluminium really used, and is ...
27
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2answers
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How exactly can an airship lose lift?

On this wiki page (under 'Comparison with heavier-than-air aircraft'), the altitude record of the L-55 Airship states: The ultimate altitude record for a rigid airship was set in 1917 by the L-55 ...
3
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2answers
356 views

During WW1 Zeppelins began their missions with Hydrogen cells at 33% full. How did this provide enough lift to get off the ground?

During WW1 U Class Zeppelins had hydrogen cells that contained 55,795 cubic meters of gas. According to Peter Kämpf's excellent, detailed explanation of Zeppelin mechanics they began missions with ...
21
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4answers
3k views

What are pro/cons of steam as lifting gas for airships?

I was reading Wikipedia page about hot air airship and another Wikipedia page about the first powered and steerable airship which was powered by a steam engine. So I ask myself "why didn't they ...
2
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2answers
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How would we calculate the load factor on an aerial vehicle while landing due to sudden gust loads?

In order to design the landing gear (wheels and suspension) of our model Airship, [say "m" kg -expected mass], I wanted to know, is there any way to calculate the loads which might be experienced by ...
1
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2answers
936 views

Could a blimp maneuver using a sail? [closed]

How do you build a sail for a blimp/hybrid airship and what would it look like? Similar to a sail boat how could a blimp maneuver without propellers? Can a blimp sail against the wind? Wind can travel ...
6
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1answer
242 views

When an airship climbs the hydrogen in the ship's cells expand. Does this mean that when the airship descends the empty cells fill with air?

During WW1 a U Class Zeppelin had hydrogen cells that contained 55,795 cubic meters of hydrogen. At sea level the cells were filled to 100% with hydrogen and this weighed roughly 4,500 Kilograms. The ...
3
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1answer
134 views

How fixed air, gas and fixed weights in rigid airships is computed in this book?

I hope I am posting this in the right forum. My current problem is part aviation, part maths. I have been struggling with the following computation ( Burgess, Charles Paine. Airship Design. Honolulu, ...
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1answer
872 views

What gas is used in airships to give them buoyancy?

In the 1930s Zeppelins used hydrogen as the lighter-than-air gas to fill the envelope and give the ship buoyancy. What kind of gas is used today? Is it still as flammable as the Hydrogen from ...
1
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2answers
374 views

Can balloons be stacked in a climable daisy chain to the edge of space? [closed]

How high can a balloon/s be and still be tethered to the ground? The most common problem was finding the calmest place on Earth. The longest balloon chain is 20 km Pictures below are basic ...