It is clear that the zeppelin burned rapidly, but (as far as I can tell) there was no blast wave of the sort associated with genuinely explosive combustion: the ship neither "popped" or exploded, and the existing photographic record shows the fire proceeding across the craft from the side where combustion was initiated. This suggests that oxygen migrated into the gas bags only from the burning open end and that hydrogen-air mixtures concentrations near the explosive limit did not exist within the body of the bags.
The question raised by Bain is, I think, how the fire started:
The Hindenburg: Was Hydrogen Really To Blame?
Based On An Article by Mariette DiChristina, Popular Science, Nov. 1997
http://www.esdjournal.com/articles/blame.htm... Through his contact with Van Treuren, Bain discovered that pieces of the Hindenburg's skin still existed. He traveled all over the country buying whatever original materials, papers and books he could from collectors. He was even able to obtain a small clipping of the swastika painted on the Hindenburg's side from a collector in Chicago, Cheryl Gantz, who heads up the Zeppelin Collectors Club.
Bain approached researchers at NASA who all agreed to donate their free time to work on "Project H". Their first task was to examine the materials to determine what was in the fabric that covered the Hindenburg. By using an infrared spectrograph and a scanning electron microscope, the scientists were able to discover the chemical signatures of the organic compounds and elements present in the fabric.
The Hindenburg was covered with a cotton fabric that had been swabbed with a doping compound to protect and strengthen it. Unfortunately, the doping compound contained a cellulose acetate or nitrate (used in gunpowder). This compound was followed by a coating of aluminum powder (which is used in rocket fuel). Additionally, the structure was held together using wood spacers and ramie cord; the furnishings were make of silk and other fabrics; and the skeleton itself was duralumin coated with lacquer. Added together, all of these made the craft itself highly flammable. In DiChristina's article, Bain was quoted as saying that perhaps "... the moral of the story is, don't paint your airship with rocket fuel."
In support of Bain's theory that the fire was started by the fabric's flammability in a charged atmosphere were two letters that he discovered in a German archive. The letters were written in 1937 by Otto Beyerstock, an electrical engineer who had incinerated pieces of Hindenburg fabric during electrical tests conducted at the direction of the Zeppelin Company. Beyerstock ruled out the idea that hydrogen could have started the fire. He asserted that the same outcome would have occurred if a similar craft flew under the same atmospheric conditions but with noncombustible helium instead of hydrogen as the lifting fuel. As a matter of fact, Bain discovered that such a fire did occur in California in 1935 when a helium-filled airship with an acetate-aluminum skin burned near Point Sur ...
This investigation by Bain appears to predate the management PhD (whatever value that degree has or does not have), and it seems to have involved real research, real sample and data collection, and genuine collaboration with expert colleagues, and there have been other academic scientists (such as Van Vorst at UCLA) who support this theory. Whether this theory ultimately turns out to be correct or incorrect, I conclude that your use of the word "charlatan" is unfair as a description of Bain. In mathematics, of course, error is a cardinal sin, but the physical sciences are NOT mathematics and honest error in the sciences is a normal part of the game.
A PhD is a nice string of letters to set after one's name, of course, but what it signifies is rather variable. I once met a first-rate x-ray diffraction expert whose PhD was in psychology. Some people do excellent work without the degree: the influential twentieth century mathematician van der Waerden comes to mind. And there are plenty of hacks who can claim the letters. Like you, I have a PhD in mathematics, and part of my dissertation was published, though (perhaps with some justification) hardly anyone I have met in daily life has shown even a polite interest in that aspect of my intellectual life. So if Bain felt he needed the letters after his name for credibility, I should simply consider him somewhat misguided in that respect.
I'm not even slightly a hydrogen enthusiast myself, and I do not consider that the Hindenburg issue sheds much light on the issue of hydrogen-fuel safety, nor am I terribly impressed by Lovins' interest in this particular topic. But Lovins' misjudgment on this one matter does not really reflect much on the whole body of his efforts ...