The blimps, or “airships,” would contain a lighter-than-air gas such as helium, or heated air, so they would float.
Of course, stationing a floating warehouse over a city and having drones coming and going from it raises safety concerns that previous Amazon patents have already identified. The company has patented a system that would cause a drone to fragment in case of malfunction, to reduce the falling-object hazard. Amazon has also noted that drones could fly into buildings, or be hijacked by “nefarious individuals.”
It’s not clear that the Seattle firm headed by CEO Jeff Bezos will achieve its goal of delivering many products by drone. And it is also unclear whether the company will pursue the technologies described in the warehouses-in-the-sky patent.