Questions tagged [lighter-than-air]

Aircraft which maintain flight through buoyancy due to their volume weighing less than the surrounding air.

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13
votes
2answers
189 views

Why does the FAA mandate a temperature indicator for all manned balloons?

14CFR31.85 ("Required Basic Equipment" for manned free-air balloons) requires an Envelope Temperature Indicator (ETI). This is a requirement of the FAA, not necessarily the manufacturer. Some balloon ...
0
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0answers
49 views

Could a airship be built using vacuum as the lighter-than-air “material”? [duplicate]

Could an airship be built that uses instead of a very light gas a vacuum to keep it floating? Or would the materials needed to keep its volume even without the pressure from the inside always be ...
6
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1answer
413 views

How to become Hybrid airship Pilot?

Are Hybrid Airship pilot different from other aircraft or helicopter pilot?
5
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2answers
417 views

If unable to procure Helium, are there any regulations against filling lighter than air craft with Hydrogen instead?

The price of helium is going up again, and it is very difficult to find suppliers without established contracts. If all possible safety measures are taken, are there still regulations by FAA or other ...
13
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2answers
2k views

Are transponders required for hot-air balloons in the US when operating within a Mode C Veil?

I've taken some people flying recently for fun, and they noticed some hot-air balloons and asked me if they had transponders. In San Diego (Southern California) I often see hot air balloons well ...
41
votes
4answers
4k views

How do you catch a runaway blimp?

A few hours ago, a rather large (243 feet long) helium blimp owned by NORAD broke loose of its moorings in the Eastern United States and floated away. The news is currently reporting that it's being "...
19
votes
5answers
6k views

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 ...
1
vote
1answer
717 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 ...
12
votes
1answer
665 views

Do lighter-than-air aircraft communicate with ATC?

Do lighter-than-air aircraft communicate with ATC? If not, how do they avoid running into other aircraft?
9
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1answer
852 views

What instruments or avionics do balloons usually have?

For normal sightseeing flights in a typical hot air balloon, what instruments or avionics does the pilot usually carry? Do balloons have a minimum equipment list?
16
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2answers
3k views

Does adding a motorized fan to a hot air balloon change its class as an aircraft?

I have seen fans like these for use in ballooning and glider propulsion. Does adding one of these change the definition of the flight vehicle? e.g. is it No longer a balloon, but now an aircraft? ...
12
votes
1answer
499 views

How does a pilots license of cluster ballooning differ from other ballooning or unpowered flight?

John Ninomiya discusses his experience with developing this new style of ballooning on his Cluster Ballooning website. Many of the site's links are now broken, but on there he formerly attested that ...