The constantly evolving “Enzmann Starship”

 aircraft, blather, history, Hmm..., Nuclear Pulse Propulsion, nukes, projects, rockets, science fiction, spacecraft, ಠ_ಠ  No Responses »
Jan 022023
 

The “Enzmann Starship” is named after Robert Enzmann, who “designed” it decades ago. Just exactly *when* has been an issue of some confusion in recent years.

It first came to light in the late 60’s or early 70’s, with claims that he thought it up around 1964 or so. The design is unique: a giant spherical ball of frozen deuterium fuel at the front, followed by a cylindrical ship, ending with a series of Orion-style nuclear pulse engines. It was an *ok* concept for a practical starship, though relatively recent analysis presented in the Journal of the British Interplanetary Society argued that it was not nearly as good as imagined. It became something of a sensation in the 70’s after appearing on the cover of “Analog” in 1973.

Nothing has ever been produced, so far as I’m aware, backing up the concept with any sort of detailed design of analysis until that JBIS paper. No reports, proposals, pages of math, from Enzmann seem to be available… just text descriptions of a few sentences and some art. And that’s fine. But in recent years the claims have become more and more expansive. Enzmann, near the end of his life, claimed that the design for a nuclear-pulse vehicle dated not from the time of the Orion program, but back to the *40’s*.

I spoke to Enzmann on the phone a few times over the years. He was enthusiastic, verbose… and baffling. He made lots and lots of claims about having worked on this or that amazing program, but when asked for verifiable details… it was classified. Those who have picked up his mantle and are trying to carry his torch seem to be following in his footsteps there, continuing his claims without much apparent criticism. I’ve recently engaged their twitter contact to get some sort of verification of his claims… but we have now reached the point where not only am I convinced that no such evidence will be produced, I feel no reason to assume anything remarkable is true at all. Behold:

Claiming that nuclear powered aircraft were actually built in the fifties and then buried in a mountain? Yeah… no. I’m out.

 

Where the thread started:

 Posted by at 11:06 pm

APR rewards: December (and November) 2022

 aircraft, CAD diagrams, drawings, history, Monthly Historical Documents Program, new products, Patreon, projects, rockets, spacecraft  No Responses »
Jan 022023
 

The December 2022 rewards are available for APR Patrons and Subscribers. This latest package includes:

Large Format Diagram: AWACS model diagram

Document: “Preliminary Design of a Mars Excursion Module,” 1964 conference paper, Philco

Document: “Astronauts Memorial” 2 diagrams

Document: “Patrol Reconnaissance Airplane Twin Float,”  Convair brochure (via photos), 1944. Two piston engines, two turbojets

Document: “Hard Mobile Launcher,” Martin Marietta PR, two images. One photo, one artists impression

Document: “JVX Space Proposal” apparently a fragment, 1984 Bell maps of manufacturing facilities for what would become the V-22

Document: “Minimum Man In Space,” 1958 NACA memo describing proposals made to Wright Air Development Center for what would become the Mercury program

If you would like to help fund the acquisition and preservation of such things, along with getting high quality scans for yourself, please consider signing on either for the APR Patreon or the APR Monthly Historical Documents Program. Back issues are available for purchase by patrons and subscribers.



 

And because I forgot to post about it at the time, the November 2022 rewards were made available a month ago:

Large Format Diagram: B-50A Superfortress Model Diagram

Document: “Design Study of a One Man Lunar Transportation device,” 1964 North American Aviation conference paper on a rocket “hopper”

Document: “Project EGRESS (Emergency Global Rescue, Escape and Survival System),” 1964 Martin conference paper on ejection capsule for aerospacecraft

Document: “The Hydrogen Fueled Hypersonic Transport,” 1968 Convair conference paper

CAD Diagram: Mach 3 turbojets: Allison 700 B-2 (J89), GE YJ-93-GE-3 (cutaway), P&W J58

If you would like to help fund the acquisition and preservation of such things, along with getting high quality scans for yourself, please consider signing on either for the APR Patreon or the APR Monthly Historical Documents Program. Back issues are available for purchase by patrons and subscribers.



 Posted by at 10:54 am

Cyanotype update: irritation edition

 AARRRGH, blather, cyanotype blueprints, history, Hmm..., ಠ_ಠ  No Responses »
Dec 282022
 

I have been poking away at resuming cyanotype production using the new setup and the old transparency negatives. In order to go forward successfully, I need to be able to print on transparent film up to 2 feet wide by six long. I have encountered a lot of trouble here, which has baffled me. No print shops within a hundred miles seem to be able to do that. I put in an order to buy a roll of the film myself to keep at one of the local shops to print off on as needed… and was informed today that the roll will be delivered no sooner than late *February.* The manufacturers don’t have the raw materials for it.

 

What’s baffling is that when last I worked with this, circa 2017 or so, getting these sort of prints was no trouble whatsoever. I’d send the files to a local print shop in Utah and within a few days the job would be done at reasonable cost, no sweat. Now, though… it’s just not done. And it turns out there is a reason: up until about 5 years ago, it seems people were still regularly using diazo-type blueprinting for architectural and other industrial diagrams, which required this sort of film. But around five years ago, digital printing finally drove the last nail in diazotypes coffin. Without the market, there’s no supply.

 

So, hopefully the film will still arrive. But I have a customer who kinda wants his custom job, and that’s an unreasonable wait. So something new is being done. The customers line diagram is being printed not on thin transparent film, but on thin *plexiglas.* I can see this resulting in superior cyanotypes; the plexiglass will be vastly less prone to being anything other than dead flat, so the prints should be sharper. But plexi is *far* more expensive (two full size prints will cost as much as the entire roll of film that’s hopefully coming)… and when not in use, I can’t just roll it up and stick it in the corner. If I get 24 inch by 72 inch prints on these, not only is storing them going to be a problem, I can’t even fit them in my car. Grrr. These are problems that will be solved, but, grrr. Everything is always harder not only than it needs to be, but than it used to be.

 Posted by at 1:57 pm

Bell BAT LHX art

 aircraft, art, history, projects  No Responses »
Dec 192022
 

Artwork circa 1983 depicting the Bell BAT (“Bell Advanced Tiltrotor”… so… ummm… the “Bell Bell Advanced Tiltrotor”) single-seat small military tiltrotor designed to compete in the LHX program. It is shown here in two modes. The nearest aircraft is in full forward flight; the aircraft in the background is hovering. Both are in the process of firing unknown anti-tank missiles at a column of Soviet armor.

 Posted by at 10:27 am

Cyanotype test 4

 art, awesomeness, cyanotype blueprints, drawings, history, Hmm..., spacecraft  No Responses »
Dec 182022
 

Ran two prints today. The second one, the 4th test of the new setup, turned out to be pretty much there with just a few minor issues. The main issue I’m looking at now is getting proper coverage of the paper. For whatever reason, the cyanotyping fluid doesn’t really like the vellum paper and you get occasional blotchiness. This was a constant problem before, and was solved largely by tossing prints that weren’t up to code. Experiments will continue…

 Posted by at 12:46 pm

Cyanotype: Test 2

 art, awesomeness, cyanotype blueprints, drawings, history, news, rockets  No Responses »
Dec 162022
 

Todays test involved mounting the UV light bar to a crude frame and just letting it run, not waving it over the print like an idjit. As you can see most of it is pretty uniform; the end of the print that was furthest from the light bar wasn’t adequately exposed. However, come the weekend two more UV lights will arrive and will extend the reach.

 

The learning curve this time around is going *much* faster than the first time. This should probably not be a surprise, but it’s nice to see that things are trending quickly in the correct direction.

 

 Posted by at 6:32 am

Baby it’s WAP outside

 AARRRGH, art, Crazy, dumbassery, Gah., history, Hmm..., humor, politics, Worldwreckers, ಠ_ಠ  No Responses »
Dec 152022
 

And here we are:

There are of course comments by people who don’t understand the concept of “context:”

 

 

 

 

 

 

 Posted by at 8:17 am

And they weren’t wearing full containment suits because…

 AARRRGH, awesomeness, books, Crazy, dumbassery, Gah., history, Hmm..., youtube, ಠ_ಠ  No Responses »
Dec 132022
 

And so Adam Savage goes to the Royal Society In England and gets to look at not only a first edition of Newton’s “Principia,” but the actual *manuscript.* And both he and the archivist handle them with their bare hands.

Shudder.

There are books that *I* own that I hesitate to actually touch without cotton archival gloves. But the Principia? Dude, I wouldn’t touch that unless I was fully sealed. I’d be deathly afraid of not just touching it, not just sneezing on it, but simply *breathing* on it.

 Posted by at 2:39 am

Yup: Cyanotypes

 art, awesomeness, cyanotype blueprints, drawings, history, news  No Responses »
Dec 092022
 

I am going forward with the return to cyanotyping. I’m gathering the supplies needed to rebuild the capability; learning some lessons from before, this setup should be a little better and a little bigger. I should be able to make prints 24 inches by up to 7 feet. It’s a bit of a chore and certainly an expense, but the end results will, I hope, be an improvement over what I produced before.

 

As before, I plan on taking commissions. I don’t care what it is… aerospace diagrams, ships, architectural diagrams, sci-fi movie prop diagrams, gay wedding cake layouts… if it can be blueprinted, I’ll do it (for a fee). So if you have anything along those lines you’d like blueprinted in the old-school cyanotype fashion (white lines on a Prussian blue background), made by hand using chemicals, sunlight and effort rather than hitting “print,” let me know. Something I will try again is blueprinting onto linen. I ran off a few back in the day; interesting, but perhaps a bit niche.

 Posted by at 9:17 pm
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