Patreon – Page 28 – Aerospace Projects Review Blog

Bell VTOL Artwork

Feb 062015

Last night I went to upload the monthly catalogs of diagrams & documents for the $10-level Patreon patrons to choose from… and found that something screwy is going on with the file attachment system. After much useless flailing I determined that the system, which has worked fine until now, is just plain broken. However, an alternate system seems to have presented itself which should work just fine. And additionally I wound up adding two pieces of high-rez artwork for $4-and-up-level patrons… an X-14C VTOL ground attack plan weapons loadout display, and the Bell “Mighty Mouse” small assault transport tiltrotor. If you would like to become a patron and get occasional bonus goodies like these (as well as the regular monthly rewards), please consider signing up to become a patron. For a pittance per month, you get all kinds of aerospace history goodies.

The full-size versions (available to $4 patrons under the “Creations” tab) are much bigger:

Atoms for Peace Dirigible

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Jan 182015

I’ve made available to all APR Patreon patrons full-rez scan of of an article from Mechanix Illustrated, March, 1956. “Why Don’t We Build an Atom-For-Peace” was written and illustrated by Frank Tinsley and is, to say the least, kinda technologically optimistic. But it demonstrated a difference in psychology between then and now… sixty years ago, thinking this kind of big was not seen as crazy as it would be today.

If this is of interest, please consider signing up to become a patron. For a pittance per month, you get all kinds of aerospace history goodies.

PDF Review: “Ignition!”

Patreon, PDF Review 3 Responses »

Dec 272014

“Ignition! An informal history of liquid rocket propellants” was written by John D. Clark and published by Rutgers University in 1972. It is a classic text on the subject… a text which has not been reprinted since except by some print-on-demand types. If you find a copy of this book for less than several hundred dollars, you’ve lucked out. It’s a good read, both informative and entertaining.

Fortunately, someone went to the bother of scanning the whole thing and posting it as a PDF. I’m honestly unclear about the copyright implications, if any… but the scan has been openly and freely available for some years, so…

http://library.sciencemadness.org/library/books/ignition.pdf

Hmmm. It seems that I’ve completely flaked out on the PDF reviews for quite a while. And nobody said anything. Makes me wonder if maybe there’s just no interest in these? Shrug, oh well, moving on…

As always: check out the APR Patreon for info on how to help, and how to get rewards.

Patreon: December rewards

bomber, Dyna Soar, fighter, hi-rez, hypersonic, Patreon, research, rockets, spacecraft, spaceplane, stealth No Responses »

Dec 262014

There was a delay getting the December rewards out, and a further delay in putting this notification together that the rewards are available… so it might be only a short-ish time before these are gone, replaced by the *January* rewards. So if these look of interest… act fast!

PDF Document: “Design Study for an Air Force Model F-82E Airplane Modified to a Ground Attack Aircraft with Allison XT-38 Turbo Prop Engine,” a North American Aviation report from 1948. This was not for a simple engine swap-out… the cockpits were moved forward and the engines located behind them, driving the props with long shafts.

PDF Document: “SAM-D Air Defense Weapon System,” a 1973 US Army description document of what would become the Patriot missile system.

Large Format Diagram: a large-format full-color (w/bonus grayscale versions) diagram of the X-20 Dyna Soar. Very detailed and clear. Looks great on a wall (believe me on that!)

CAD Diagram: Boeing Model 853-21 “Quiet Bird” a 1961 design study for a low radar cross section (i.e. stealthy) research aircraft.

If you would like to access these items and support the cause of acquiring and sharing these pieces of aerospace history, please visit my Patreon page and consider contributing.

Klagenfurt Klf 255

fighter, Patreon, rockets 1 Response »

Dec 092014

Ever since I started working on Aerospace Projects Review in the late 1990’s, people have asked from time to time if I planned on putting out an April Fools edition,or covering fictional designs, something along those lines. And I have always shot that concept down, because one thing I don’t want to do is contribute to confusion of mythology. Because even the most transparent fakery can be believed by far too many people (witness the patently absurd modern fiction called “Die Glocke”).

One of the better known “fakes” that has sometimes been understood to be real is the “Klagenfurt Klf 255.” This was originally published in the French aviation magazine “Fana de l’Aviation” as an April Fools gag in 1973. Supposedly a wartime German design for a rocket powered interceptor, the diagrams are actually reasonably convincing, as are the pre-Photoshop fake photos… but it was nevertheless pure fiction.

Some years back someone sent me a photocopy of the original article. I’ve scanned it in PDF format and posted it to the APR Patreon for all patrons (this means as cheap as $0.75/month). Enjoy. And remember… It’s A Faaaaaaaaaake.

If you would like to access these items and support the cause of acquiring and sharing these pieces of aerospace history, please visit my Patreon page and consider contributing.

Patreon: November rewards

hi-rez, hypersonic, jetliner, launch vehicles, Patreon, rockets, transports, VTOL No Responses »

Nov 162014

The November rewards for the APR patrons have been released. They include:

PDF document: “The Air Turborocket Powerplant,” an Aerojet brochure from October 1955 describing an advanced airbreathing propulsion system for missiles, bombers, intercepts, etc.

PDF document: “VTOL Transport Aircraft Comparative Study,” a report from Vertol, 1956. Describes, with data, sketches and three-view diagrams, a range of different types of VTOL transports, including tilt-wings, lift jets, aerodyne, etc.

DIAGRAMS: two parter this month. First: layout, inboard and sectional views of the Lockheed L-2000 SST. Second: Douglas diagrams… “Plans for Scale Model Construction of the Long-Tank Thor Agena.” Good diagrams of the launch vehicle.

CAD diagram: NASA-Langley hypersonic transport.

If you would like to access these items and support the cause of acquiring and sharing these pieces of aerospace history, please visit my Patreon page and consider contributing.

Aerion SST brochure

hi-rez, jetliner, Patreon, transports No Responses »

Nov 112014

I’ve scanned (at 300 dpi, full color) a brochure from the Aerion Corporation describing their supersonic business jet. It’s several years old… somewhere around 2005-07, I’d guess. I’ve posted the scan in PDF format over at yon Patreon, available to any and all patrons of Aerospace Projects Review.

PDF Review: A Method of Reaching Extreme Altitudes

launch vehicles, Patreon, PDF Review, research, rockets, spacecraft No Responses »

Oct 312014

This is the fourth of four “PDF Reviews” I plan to have in October, to make up for the lack of any in September. The idea is to present interesting online resources for those interested in the sort of aerospace oddities that you can find in the pages of Aerospace Projects Review. This little project is supported through my Patreon campaign; at current levels, I’ll post two such reviews per month. If you’d like to see more, or just want to contribute to help me along, please consider becoming a patron.

A work of no small importance in the history of spaceflight is “A Method of Reaching Extreme Altitudes” by Robert Goddard. Published in 1919 while his early rocketry work was being funded by the Smithsonian, “Method” is one of the major works of rocket engineering of the 20th century. At this time of writing, Goddard had experimented only with solid rockets; liquid rockets still being in the future. But in “Method” Goddard began to show what rockets could be capable of. In his last section he discussed what would be needed to launch a rocket not just to high altitude, but to escape velocity and beyond, with some discussion of how much flash powder would be needed to be detected impacting (and flashing) on the darkened surface of the moon.

It was that last bit that caused all the trouble.

Goddard was not by nature a publicity hound. And the press of the time, once they got hold of the report, savaged him for what they – incorrectly – saw as a sensational proposal to actually build a moon rocket, coupled with a flawed understanding of physics on the part of some reporters and editorial writers. The resulting firestorm in the press served to popularize Goddards work and inspire rocketeers around the world… but it also inspired Goddard to be even more of a recluse. Had this not been published, or had it escaped the notice of the press, it’s interesting to speculate how history might have been different. Many German rocket scientists might not have been as inspired, while Goddard might have been less reclusive and thus more open to accepting assistance. The result *might* have been that WWII would have ended not with German rocketeers being sought all over the world, but American rockeeters in the same position… but victorious. The result of *that* would have been to potentially move the march to space forward by five to ten years, while denying to the Soviets much of the expertise of the Germans.

The Internet Archive has a scan of a Smithsonian copy of the report. Their copy has a number of hand-written corrections and notations, and appears to be a proof copy rather than one of the final published versions.

Link to the abstract page:

https://archive.org/details/methodreachinge00Godd

And directly to the PDF:

https://archive.org/download/methodreachinge00Godd/methodreachinge00Godd.pdf

PDF Bonus: Docking an XF-85 Goblin

bomber, fighter, Patreon, PDF Review, research No Responses »

Oct 232014

This is the third of four “PDF Reviews” I plan to have in October, to make up for the lack of any in September. The idea is to present interesting online resources for those interested in the sort of aerospace oddities that you can find in the pages of Aerospace Projects Review. This little project is supported through my Patreon campaign; at current levels, I’ll post two such reviews per month. If you’d like to see more, or just want to contribute to help me along, please consider becoming a patron.

One of the odder American aircraft in the immediate post-war period was the McDonnell XP-85 “Goblin.” This was essentially the smallest jet fighter possible to build with the technology of the time… small so that it could be carried within the bomb bay of the Convair B-36. The B-36 could reach far, far beyond the range of any conceivable escort fighter, leaving it at the mercy of defending Soviet fighters; if it could carry a fighter jet with it, it might stand a chance. of course the idea was fairly ridiculous; the Goblin was the biggest plane that could be carried internally, yet would almost certainly stand little chance against a conventional fighter.

Dropping the fighter from the bomb bay would be fairly easy and straightforward. But getting it back was understood to be a challenge. The Goblin would rendezvous with a “trapeze” projected well below the bomb bay, outside of the turbulent airflow around the bombers fuselage. Once docked to the trapeze, it would be mechanically stabilized, the wings would fold up and the trapeze would retract, safely drawing the fighter into the bomb bay. That, at least, was the plan; actual testing with a B-29 showed that the docking rendezvous was far more difficult than envisioned.

This difficulty was not wholly unforeseen. In 1947, the Langley Aeronautical Lab ran a series of wind tunnel tests of a 1/10 scale model of the Goblin and the forward fuselage of a B-36. Tests were conducted with both “power off” and “power on” models; the power off models were well behaved when docked to the trapeze, but the power on models quickly underwent violent flailing. The tests were filmed, with small still images included in the test report; the power-on model response is dramatic, to say the least.

Stability and Control Characteristics of a 1/10-Scale Model of the McDonnell XP-85 Airplane While Attached to the Trapeze

Here’s the link to the NASA-NTRS abstract of the report.

And here’s the DIRECT LINK TO THE PDF.

The wooden model of the FP-85 used. Note the hinged wings and the rudimentary landing gear, used to protect the model if it falls free.

Diagram of the XP-85 model.

Patreon Bonus: Soviet Sanger

bomber, hypersonic, Patreon, rockets, space shuttle, spacecraft, spaceplane 1 Response »

Oct 232014

Many years back I was given a photocopy of a Soviet journal article describing a Soviet version of the WWII-era “Silverbird.” The Silverbird was the brainchild of Austrian rocket engineer Eugen Sanger and was a concept for a hypersonic rocket powered “spaceplane” capable of dropping bombs halfway around the world. In the years immediately after the war, the report Sanger wrote proved to be influential on policymakers and engineers, especially in the USSR.

This article describes a Silverbird modified with sizable ramjet engines mounted to the wingtips. Sadly, I can’t read a single word of Russian, so I can’t make heads or tails of it apart from the illustrations. One notation indicates that this may date from 1947. The vehicle described would seem to be the “Keldysh Bomber.”

I have scanned the article and posted it as a PDF on my Patreon for patrons at the $1.50 level (c’mon… that’s $1.50 a month! Mere pennies a day!).

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