I'm not 100% sure that they used drop stitch, but the company Prospective Concepts developed a few more modern designs of inflatable wings for various applicati

I'm not 100% sure that they used drop stitch, but the company Prospective Concepts developed a few more modern designs of inflatable wings for various applications. https://repository.tudelft.nl/islandora/object/uuid:306785d0-f75b-4378-a145-75905c83efa7/datastream/OBJ/download https://repository.tudelft.nl/islandora/object/uuid:306785d0... https://www.prospective-concepts.ch/html/site_en.htm https://www.prospective-concepts.ch/html/site_en.htm (click "Projects" > "Air" on the right) Personally I think this is a technological dead-end, at least for the civil aviation use cases that I understand. The only advantage of an inflatable system is compactness / portability, but since the Inflatoplane, that's been solved in many other ways by rogallo wings, hang glider type wings, paragliders, parachutes, various types of fold-out rigid wings, etc. And all of the other properties of inflatable wings aren't advantageous other. They're not simpler, lighter, stronger, more durable, or more reliable than the alternative best option, and they don't seem to have a particularly good mix of useful properties to win against the other best alternative for any given use case, even if you assume modern materials and modern techniques.