One of Lockheed’s first designs for a jetliner, 1945’s L-151, was basically a Constellation with the piston engines replaced with two clusters of three turbojets. It was a terribly conservative design, and likely would not have performed very well at all, particularly on range… but it was a start.
Diagram is from US Transport Projects #2.
As with pretty much all jetliners, the 747 has seen its fuselage stretched (and shortened) to adjust the number of passengers and other payload it can carry. But as stretched as it has been, there were plans for much more extravagant changes. In the early 1970s there were plans in place for not only fuselage stretches by way of inserting lengthening plugs, but also by stretching the upper deck much further aft, turning it into a true double-decker. As the diagram below shows, for shorter routes the passenger count count be bumped up to 1000. keep in ind that this was using 1971-era seating; with modern 21st century passenger-packing technology, who knows haw many human bodies could have been stuffed into these planes, ready to be driven mad by booze, low oxygen, screaming babies and deep vein thrombosis.
A Boeing diagram of the Model 767-85M, a pre-767 jetliner concept from 1971 designed to cruise at Mach 0.98. In order to achieve that, the design was massively aerodynamically optimized for transonic efficiency… with “wasp-waiting” taken to something of an extreme. The aircraft would have been fuel efficient at high (but still subsonic) speed, but would have been a nightmare to manufacture.
I’ve made the full-rez scan of this large format diagram available to above-$10-subscribers to the APR Monthly Historical Documents Program/Patreon.
If this sort of thing is of interest, consider subscribing. Even a buck a month will help out; but the more you subscribe for, the more you get… and the more you help me get from eBay and save for the ages.
Last year a number of photos of the Lockheed L-2000 SST concept were sold on eBay. I didn’t get them, but the auctions came complete with some decent (not great) resolution scans of the photos. I have uploaded seven photos to the 2019-03 APR Extras Dropbox folder, available to $4 and up subscribers to the APR Monthly Historical Documents Program.
Lockheed’s entry into the FAA’s 1960’s Supersonic Transport contest was the L-2000. It was an appealing design, sort of a super-sized and angular Concorde. it lost to the Boeing 2707 due in no small part to the 2707’s swing wings… wings which wound up being fixed, like those of the L-2000.
In 1965 Lockheed released an exploded view of the L-2000’s structure, reproduced in Aviation Week, split across two pages. I took the images and fixed them; the full-size end result is pretty spiffy. I have uploaded the illustration, and two additional L-2000 images to the 2019-02 APR Extras Dropbox folder, available to $4 and up subscribers to the APR Monthly Historical Documents Program.
The SST designs of the 1960’s are hardly unknown. But what’s generally not well understood is that designs such as the Boeing 2707 were *huge.* This was considered necessary because SSTs with fuselage lengths in line with existing jetliners – such as the Concorde – would have small passenger capacities due to the need for the fuselages to be *very* narrow compared to their lengths. This, as Concorde showed, was a great way to build an extremely cost-ineffective fuel hog.
So the 2707 would be terribly long and pointy, with a geometry quite a bit unlike regular jetliners. A practical concern is “how do we deal with these things at airports?” If nothing else, the long pointed nose of the SST would put the passenger door considerably further aft than for a conventional rounded-nose jetliners. So, like the 747 and the A380, it was assumed that the larger airports would have to make some infrastructure modifications in order to deal with these new beasts.
The illustration below, from a 1967 issue of Aviation Week, shows American Airlines thinking about the airports of the future. Note that the 2707 is pulled in far closer than the other craft, with the tip of t’s very pointed nose just a few feet away from the building while the others are notably further away. The SST is being serviced by two extendable jetways at maximum extension, while most of the other planes seem to be getting along with just one jetway… though one of the 747s is using four. Note that even though the 747 isn’t pulled in quite as far as the 2707, the SST nonetheless projects much further out into the airfield. For some airports this could well have meant that the taxiways would have been a cluttered mess.
Now available… four new issues in the US Aerospace Projects line.
Cover art was provided by Rob Parthoens, www.baroba.be
US Fighter Projects #03 is now available (see HERE for the entire series). Issue #3 includes:
USFP #3 can be downloaded as a PDF file for only $4.25:
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Cover art was provided by Rob Parthoens, www.baroba.be
US Launch Vehicle Projects #5 is now available (see HERE for the entire series). Issue #5 includes:
USLP #5 can be downloaded as a PDF file for only $4.25:
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Cover art was provided by Rob Parthoens, www.baroba.be
US Recon & Research Projects #3 is now available (see HERE for the entire series). Issue #3 includes:
USRP #3 can be downloaded as a PDF file for only $4.25:
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Cover art was provided by Rob Parthoens, www.baroba.be
US Transport Projects #8 is now available (see HERE for the entire series). Issue #8 includes:
USTP #8 can be downloaded as a PDF file for only $4.25:
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A double-page spread from Aviation Week in 1967 showing models of various designs leading to the final 747 configuration.
A glimpse at the first draft of the diagrams for US Transport Projects #8. The careful observer will note that there have been a number of “Forthcoming” posts over the last several months with no followup of a final product. There will be, at some point, a mass release of a larger than usual number of USxP issues.
The Lockheed L-2000 was a Mach 3 SST designed to compete against the Boeing 2707 in the mid 1960’s. It was an elegant and classy looking design, but was passed over by the US Government in favor of the Boeing design. Lockheed built a full scale and reasonably convincing mockup of the craft, using it for both study and PR purposes.
The L-2000 looked like nothing quite so much as a cross between the Concorde and the SR-71.
A full rez scan of the 8X10 glossy has been uploaded to the 2018-09 APR Extras folder on Dropbox for APR Patreon patrons at the $4 level and above. If this sort of thing is of interest, please consider signing up for the APR Patreon.
