Saturday, March 22, 2014

Flying Pumpkins

As noted in my last post, the current research into hybrid airships – effectively blimps that use aerodynamic body shapes and ducted-fan propulsion to generate greater lift and control – is showing some real promise for applications where efficiency and short/vertical take-off and landing are more important than being fast or pointy. However, this isn’t the only time in the 77 or so years since the Hindenburg blew up in New Jersey that someone has tried to revisit the concept of lighter-than-air vehicles as low-speed high-efficiency cargo vehicles. It isn’t even the first time that someone has tried to combine lifting body aircraft with the lifting power of helium to create a neutral buoyancy or slightly heavier than air flying machine. However, that previous attempt did not end well…

As documented by John McFee in his definitive history The Deltoid Pumpkin Seed, the Aereon 26 was an experimental aircraft developed in the late 1960s by a group of rouge inventors and scientists under the company name of The Aereon Corporation, and first flown in 1970. The concept was one of those things that seems so simple you would need to be a genius to think of it in the first place: an airplane that doesn’t fall when it stops moving forwards. Or an airship that can climb and dive like an airplane, depending on your point of view. Conventional airplanes generate lift by forcing air over their wings, and thus have a minimum speed (the “stall speed”) below which they can’t generate lift anymore and plummet like rocks. Airships rise or fall depending on their buoyancy relative to the air they are in – add more lift gas to go up and vent it to go down, although there are also ways to control lift using ballast. If you want to use either technology for commercial purposes, there are going to be issues…

As anyone who travels by air already knows, airplanes have issues with needing inconveniently large runways to take off or land. Airships can just float up, at least to a point, but have trouble exceeding the altitude of their point of buoyancy, and can’t go down without venting valuable lift gas (helium doesn’t grow on trees). There are also issues with how fast you can propel an air-resisting mass of gas bags through the sky. The Aereon was designed to combine all of the advantages of both technologies into a single vehicle that could take off or land anywhere, fly for days on a tank of gas that would only last a few hours on an airplane with the same payload, or even stop in mid-air and wait, if that was what you needed. And, in fact, it appeared that the prototype would be able to do all of those things, given its remarkable performance without even being filled with helium…

And, unfortunately, that’s where things ended. The Aereon company proposed a number of variants of their design, ranging from a small patrol craft that could do everything a Coast Guard helicopter could do while staying in the air for days instead of hours, to a heavy lift vehicle that would have had 20 times the payload of a C-17 and operated using less fuel. But in their innocence the people running the company apparently failed to consider that exotic new technologies are difficult to sell, even when they aren’t actually new or exotic, and that entrenched competitors are hard to contend with even when they aren’t “donating” millions of dollars to the “re-election funds” of government officials whose support you would need to sell such a product. For much of the last 40 years the Aereon 26 prototype has been sitting quietly in a hangar in the Midwest, waiting for the world to catch up…

There are any number of business lessons in this case – not the least of which is that how well your invention performs is only one of the factors involved in marketing it successfully. At this time it isn’t clear if Hybrid Air Vehicles (the company behind the current blimp/lifting body development) will be able to succeed where Aereon failed, but as of this month they are at least getting development money from their national government, and at least tentative interest from two other countries. Given the place that wildcat inventors, high-tech visionaries and entrepreneurial geniuses have come to occupy in contemporary culture, maybe this is an idea that will finally get off the ground…

Keep watching the skies, folks…

No comments: