With over 120 meters and linked to the co-founder of Google, a giant rigid airship has returned to the skies of the United States almost 90 years after the great zeppelins to resurrect a forgotten technology and transport cargo where regular airplanes cannot reach.

A giant rigid airship has returned to fly over the United States and rekindled interest in an almost forgotten technology, now associated with remote transportation, aerial surveillance, and new engineering tests.

A rigid airship over 120 meters has returned to public testing in the United States and has once again brought up the discussion on the use of lighter-than-air aircraft for transportation, monitoring, and support in hard-to-reach areas.

The Pathfinder 1, developed by LTA Research, a company linked to Google co-founder Sergey Brin, expanded its flight program over the San Francisco Bay and passed through the Golden Gate Bridge area on October 28, 2025.

The aircraft uses helium, has a rigid structure, and measures 406.5 feet in length, about 124 meters.

LTA presents the Pathfinder 1 as a proof-of-concept aircraft and states that the model was created to validate the safety, reliability, and performance of modern technologies applied to airships.

Modern airships return to the aviation debate

The current interest in airships is not limited to the recovery of a historical technology.

As part of the weight is supported by lifting gas, these aircraft can remain airborne with less energy expenditure compared to vehicles that rely entirely on aerodynamic lift or rotor.

In practice, this characteristic makes airships candidates for specific applications.

Among them are the transportation of bulky cargo, persistent surveillance, environmental monitoring, infrastructure inspection, and logistical support in areas without roads, ports, or conventional runways.

The comparison with airplanes and helicopters helps explain the industrial interest.

Airplanes need prepared runways, helicopters have range and capacity limitations, while trucks depend on land infrastructure.

Airships are being studied precisely for missions where these modes do not efficiently meet needs or require support works.

The promise, however, does not eliminate the difficulties.

Since the Hindenburg disaster in 1937, large lighter-than-air aircraft projects have faced technical, financial, and regulatory barriers.

Building an aircraft of this size requires compatible hangars, long certification, a specialized team, and clients willing to hire a technology still outside the commercial routine.

Pathfinder 1 tests rigid airship technology

The Pathfinder 1 revives the concept of a rigid airship, but with materials and systems that did not exist in the great zeppelins of the 20th century.

The structure uses components such as titanium, carbon fiber reinforced polymers, and synthetic coatings.

The model also features electric motors, internal helium bags, and sensors that monitor the gas during operation.

According to LTA Research, the United States Federal Aviation Administration granted the Pathfinder 1 a special airworthiness certificate in 2023.

The authorization allowed for testing at the Moffett field in California.

In May 2025, the aircraft left the aerodrome area and completed maneuvers over the San Francisco Bay.

The passage in May 2025, the aircraft left the aerodrome area and completed maneuvers over the San Francisco Bay.

The passage through the Golden Gate region, five months later, occurred within the gradual expansion of the test envelope.

The company states that each stage serves to gather safety, performance, and operation data before the development of future versions of the Pathfinder series.

Brett Crozier, CEO of LTA Research, said that the trials help validate the safety and reliability of lighter-than-air technology.

The company’s statement treats the Pathfinder 1 as part of an incremental process, not as an aircraft ready for commercial transport.

Cargo transport in remote areas

The revival of airships also involves projects outside the United States.

In France, Flying Whales is developing the LCA60T, a 200-meter rigid airship designed to carry up to 60 tons.

The proposal is to carry cargo inside the aircraft or suspended under it, with operation in hovering flight.

The program is directly linked to demands from the forestry sector.

In July 2025, ONF Logistique, a subsidiary of the French National Forestry Office, signed a contract with Flying Whales Services to structure future operations for the removal and transport of wood with the LCA60T.

According to Flying Whales, the goal is to remove logs from remote areas without building new roads or access, without overloading existing infrastructure, and with less soil compaction in forest ecosystems.

The company states that the technical-economic studies conducted with ONF served as the basis for operational methods and equipment provided for in the contract.

The French project also brings together traditional aeronautical suppliers.

Safran announced the delivery in 2025 of a power transmission system prototype for the LCA60T turbogenerators, within a development agreement with Flying Whales.

Airlander 10 bets on a hybrid model

In the United Kingdom, Hybrid Air Vehicles works with a different architecture.

The Airlander 10 is a hybrid airship that combines helium lift, aerodynamic lift, and vectored thrust.

The company states that the model can remain airborne for up to five days, transport 10 tons of cargo, and reach 4,000 nautical miles, depending on the mission configuration.

The company also presents emission reduction as one of the project’s goals.

According to Reuters, HAV began the type certification process with the British regulator in February 2024 and aimed to put the Airlander 10 into service in 2028.

The program derives from an aircraft originally associated with a military project of the United States.

After tests with a full-scale prototype, the British company began seeking civilian applications, including regional transport, tourism, logistics, and special missions.

Certification remains a central step for commercial advancement.

The process involves analyses, simulations, ground tests, laboratory tests, and flights, as well as proof of operational safety before entering service.

Airship drones gain space in defense and monitoring

Another aspect of the airship revival occurs on a smaller scale.

Finnish company Kelluu develops autonomous hydrogen-powered airships for surveillance, mapping, and monitoring.

The company claims to operate a fleet of autonomous aircraft aimed at applications in defense, infrastructure, and the environment.

In June 2025, Kelluu participated in the Atlantic Trident 25 military exercise held in Finland.

According to the company, its airships operated in persistent and silent aerial surveillance, complementing high-altitude data with low-altitude information and multiple sensors.

The connection with NATO advanced in the following months.

In September 2025, Kelluu was selected for phase 2 of the DIANA program, the military alliance’s innovation accelerator.

In April 2026, the startup raised 15 million euros in a round led by NATO’s Innovation Fund.

In this case, the operational logic is distinct from that of large air freighters.

Smaller aircraft seek air permanence, lower cost per mission, and continuous data collection.

For defense and infrastructure clients, the interest lies in autonomy, stability, area coverage, and operation below the clouds.

China develops manned airship for tourism

China is also developing airships, initially focusing on tourism and low-altitude operations.

The AS700 Xiangyun, produced by AVIC, received a production certificate in December 2025, after obtaining type certification in 2023.

The model is manned, designed for aerial tours, and can carry one pilot and nine passengers.

According to information released by the Chinese state press based on AVIC, the AS700 has a maximum range of 700 kilometers, autonomy of up to 10 hours, and a maximum speed of 100 kilometers per hour.

Commercial adoption depends on production, training, and operational infrastructure.

AVIC itself treats the program as part of a national chain of manned airships, which includes research, manufacturing, testing, operation, and support.

Hangars, certification, and contracts still limit the sector

The physics of airships is known, but transforming this technology into a business depends on industrial factors.

The larger the intended load, the larger the aircraft tends to be.

As a result, the size of hangars, production costs, certification complexity, and the need for ground crews also increase.

Industry experts cited in the international debate point out that the lack of commercial scale is one of the main barriers.

Companies interested in using airships often wait for ready aircraft, while investors demand firm contracts before financing production.

This difference between potential demand and actual orders helps explain why airship projects advance gradually.

Even when the technology works in tests, the next stage requires capital, certification, and long-term contracts.

The Pathfinder 1 demonstrated that a large rigid airship can fly again with modern materials, sensors, and propulsion.

At the same time, projects like those of Kelluu indicate that smaller, autonomous, and specialized aircraft may reach monitoring and defense markets sooner.