The constantly evolving “Enzmann Starship”

 nukes, rockets, spacecraft  1 Response »
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 1:44 pm

APR rewards: December (and November) 2022

 bomber, CAD Diagrams, hi-rez, hypersonic, jetliner, Monthly Historical Documents Program, Patreon, rockets, spacecraft, spaceplane, transports, VTOL  No Responses »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 10:52 am

Bell BAT LHX art

 VTOL  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 12:28 am

The return of cyanotypes

 CAD Diagrams, Dyna Soar, hi-rez, launch vehicles, rockets  3 Responses »
Dec 062022
 

Some years ago I produced a range of cyanotype blueprints of a number of aerospace subjects. The hardware needed for this was disposed of when I left Utah at the end of 2019, so starting again seemed unlikely. However, someone has expressed interest in a special commission. Rebuilding the hardware needed will be an expensive chore, and sadly getting the large format transparencies printed looks like it will be much more difficult here than it was in Utah. Nevertheless, at this point it looks probable that I will restore that capability sometime in the next few months, assuming one further detail can be ironed out.

You can see my now-defunct catalog here:

https://www.aerospaceprojectsreview.com/catalog/cyan.htm

 

When I get back to it I will probably focus on the larger format stuff rather than the smaller prints. I have plans on how to improve upon the prior hardware to make things work better and more efficiently. If there are any of the former large format prints you’d like to see returned to production, or you have any prints you’d like to see, let me know. And once this is up and running I plan on trying to take commissions, working with a local print shop to find customers interested in this somewhat unusual and certainly obsolete form of art.

 

If you have a diagram you’d like me to turn into a cyanotype, contact me. Commissions aren’t going to be restricted to aerospace subjects; naval, architectural, movie props, whatever you’ve got, so long as it *can* be blueprinted, once things are in place I should be able to do it.

 

 

 Posted by at 10:09 pm

Beech VTOL: 1971

 transports, VTOL  No Responses »
Dec 032022
 

A Beech Aircraft Company concept for a civilian VTOL for the 1980s, from circa 1971. This would be a two-seater using tilt-ducts. This appears to be less “engineering” and more “art,” as there are some definite headscratchers about the design. Where are the engines? In designs such as these it/they are typically in the fuselage, driving the ducted fans with shafts. But no provisions for inlets or exhausts are evident. So the engines would probably be in the nacelles themselves but there doesn’t seem to be room for them. The cockpit canopy is expansive and would provide a *fantastic* view, but it seems to be sized only for people who have had their legs amputated. The configuration, unlike your average tiltrotor, seems perfectly capable of horizontal runway takeoffs and landings, but the use of skids rather than wheels would make that problematic. The disk loading would be impressively high, and the resulting blasts of air from the ducts would likely tear anything short of solid concrete to shreds.

 

 Posted by at 6:38 pm

Weser Flugzeugbau WFG-P 23 Tiltrotor

 transports, VTOL  No Responses »
Dec 022022
 

The West German Weser Flugzeugbau revealed the design of the P 23 tiltrotor in 1963. This was to be a do-everything vehicle… civil passenger transport, cargo transport, troop transport, ground attack, flying crane. It was an attractive design with one turboshaft engine at each wingtip; the rotors tilted, but the engines were fixed. The engines also provided power to two smaller fans mounted in the tail for pitch and yaw control. Sixty years later, it still looks like it would fit well in the skies of today, and look futuristic doing so.

 Posted by at 3:56 pm

US Supersonic Bomber Projects Vol 1 has arrived!

 bomber, Book 3, US Supersonic Bomber Projects vol 1  1 Response »
Dec 012022
 

Twenty copies of the new book have finally arrived, fortunately entirely intact. They took two days to cross an ocean, one day to cross half a continent… and two weeks to cross the customs office. Shrug.

Anyway, here’s what I’m gonna do: signed, numbered and dated copies will be $20 plus postage (media mail). These will come with two 18X24 prints, also signed and dated. If you would like to be on the list for one of these send me an email:

But the first five copies will be auctioned off, with the highest bids getting the lowest numbers. Additionally: numbers 3,4 and 5 will receive three 18X24 prints, while numbers 1 and 2 will receive four 18X24 prints, all signed, dated and numbered. If this sounds interesting to you, email me what your bid is. Bidding ends Sunday night, after which I’ll let bidders know. If there are more than five bidders, six and beyond won’t be held to their bids… but they won’t *necessarily* get the next numbers in line. Once the auction winners are processed, I’ll send out PayPal invoices for the regular copies, and they will be sent out based on the order of payment.

I also have ten “SR-71” copies and five “B-47/B-52” copies. The SR-71’s, singed and dated with two 18X24 prints, will go for $20; the B-47/52 signed and dated with three 18X24 prints, will go for $55 plus postage. If you would like one of these, let me know.

 Posted by at 11:10 pm

Bell Super Transport Artwork

 Monthly Historical Documents Program, Patreon, VTOL  No Responses »
Nov 302022
 

The Bell 214ST (“Super Transport”) first flew in 1977. Derived from the Bell 214, itself derived from the UH-1 “Huey,” the 214ST was substantially bigger and more powerful than the original design. Bell had great hopes for the type, but in the end less than one hundred were produced. A not-inconsiderable part of the problem was that the 214ST was designed to be produced in Iran which, at the time, was an American ally;  of course, Iran soon fall to forces of the Stupid Age, and that put an end to notions of Bell designs being manufactured in Iran. It was roughly similar to the Sikorsky UH-60 in size and performance. Bell continued to push for customers into the 1990’s (the art below was published in 1982), but production ended in 1992 without any big contracts.

The full rez scans have been uploaded to the 2022-11 APR Extras Dropbox folder for $4 and up Patrons/Subscribers.

 Posted by at 5:37 pm
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