Lighter Than Air Notes
Airships, tethered aerostats and high-altitude platforms — explained without hype.
Articles
Airship hangars: the biggest buildings in aviation and their second life as real estate
Every airship needs a home. An envelope sixty or two hundred metres long cannot be parked in the open for long: wind, snow and sunlight shorten its life. That is why lighter-than-air aviation has produced some of the largest single-span buildings on Earth — hangars so big that they have their own microclimate. Today these halls are also an unusual segment of commercial real estate: they are built, financed, leased and sometimes converted into something entirely different.
Read the full article →Aerostat telecom relays: connecting remote settlements
In many rural regions, the problem is not that people have no phones — it is that the nearest tower is too far away. Building a 70-metre mast in the taiga or on an island is expensive and slow. A tethered aerostat with a radio relay lifted to 300–1,000 metres can cover the same area — or much more — within days. For remote villages, that coverage changes everyday life: from calling a doctor to working remotely. And it changes the value of homes there too.
Read the full article →Aerial surveys from aerostats: a stable eye over land and property
Medium-size tethered aerostat systems — envelopes of a few hundred cubic metres lifted to 300–1,500 metres by a powered winch — are best known for long-duration monitoring. But a stable platform hanging in the sky for hours is also an excellent camera mount for mapping. Combined with modern photogrammetry, aerostat imagery can help survey towns, farmland and construction areas, and support one of the most important tasks in real estate: knowing exactly where a land plot begins and ends.
Read the full article →Small vehicle-mounted aerostats: watching a construction site from above
The smallest tethered aerostat systems fit on a pickup truck or a trailer. The envelope is inflated on site, a compact winch lifts it to 100–300 metres, and within an hour a camera is looking down at an area several kilometres across. Such systems were designed for mobile monitoring, but they are increasingly interesting for an industry that changes the landscape every day: construction of large residential developments.
Read the full article →Small advertising and training blimps
Small blimps — envelopes of 1,000–3,000 cubic metres, a pilot and one or two passengers — are the most familiar airships: they float above stadiums with logos on their sides. They are also the main school for future airship pilots. Less well known is their role in aerial photography of cities and new neighbourhoods, where a slow, quiet camera platform can show a place in a way that sells it.
Read the full article →Balloon, aerostat, airship: what is the difference?
| Free balloon | Tethered aerostat | Airship | Hybrid airship | |
|---|---|---|---|---|
| Engines | none | none | yes | yes, often vectored |
| Moves where? | with the wind | stays above one point | anywhere, under control | anywhere, under control |
| Lift | buoyant | buoyant + aerodynamic shape | buoyant | buoyant + aerodynamic |
| Typical use | sport, tourism, science | monitoring, telecom relay | patrol, filming, advertising | heavy cargo (concept) |
Explore by topic
The airship is not a failed aeroplane. It is a different answer to a different question: how to stay in the air for a long time, quietly, carrying a lot.
Quick questions
Are airships safe today?
Modern airships use non-flammable helium, and their envelopes are made of strong laminated fabrics. The main operational risk is strong wind during ground handling.
Why not just use drones?
Drones are flexible but have limited endurance. Aerostats and airships can stay aloft for days and carry heavier payloads.
Is helium running out?
Helium is not running out, but supply is concentrated in a few countries and prices fluctuate. Envelopes are designed to minimise leakage.
Do you sell aircraft or services?
No. This is an independent informational project with no commercial offers.