Ok... the first pic is the Saturn V derivative family... the first vehicle is the regular Saturn V, capable of orbiting 275,000 lbs. The second vehicle is the "A" vehicle (S-IC/S-IVB) capable of orbiting 132,000 lbs. The third vehicle is S-ID stage and a half to orbit concept, a modified S-IC with the new thrust structure, capable of orbiting 50,000 lbs (about 2/3 more than Saturn IB). The fourth vehicle is the "C" derivative, which takes the S-ID stage and a half and adds an S-IVB stage on top, capable of orbiting 180,000 lbs. The fifth vehicle is a beefed up S-IC or S-ID based vehicle with beefed up S-II and S-IVB stages and perhaps a propellant tank stretch, to handle 4 SRMs, in this case, 120 inch Titan III-C SRMs, capable of orbiting 400,000 lbs. The sixth vehicle is the same vehicle as the last one, but strengthened and fitted with 156 inch SRMs, capable of orbiting 500,000 lbs. The last pic is the same vehicle strengthened to handle 260 inch SRMs capable of launching 700,000 lbs. to orbit...
The second pic is the "A" vehicle... pop the center F-1 off the S-C, plug the lines, slap the S-IVB on top, presto there ya go. Instant 132,000 lbs to LEO or 32,000 lbs to the moon. "SEO" is geosynchronous orbit.
The third pic is the "B" vehicle, or S-ID. Basically rework the thrust structure by mounting the center engine on a cylinder attached to a new conical thrust structure on the back of the stage, to transfer the thrust to the vehicle skin. Rework the outboard engine thrust structure cross beams with a cylinder in the center large enough to clear the center engine, by removing the cruciform where the center engine USED to be mounted. Make the aft structure seperable from the fuel tank/new thrust structure joint where the outboard engines transfer their thrust to the vehicle structure, install seperation devices into the propellant lines so they can sever at staging and fall free, install gimbals on the center engine and rework the IU in a 33 foot ring to fit the top of the stage, and to handle the vehicle modes for proper control, and presto- instant 1.5 stage to orbit "mega-Atlas" capable of orbiting 50,000 pounds without an engine upgrade or tank stretch. Do the tank stretch and you up the payload. Uprate the F-1's and you REALLY up the payload!
The fourth pic is the "C" derivative-- put the S-IVB on top of your new S-ID stage, and presto-- 180,000 lbs to LEO, or 45,000 lbs to the moon.
The fifth pic is the "D" derivative, the actual "upgrade" beyond Saturn V. This is pretty much what was discussed in the other uprating studies in more detail. Strengthen everything quite a bit, stretch the propellant tanks, and slap on 4 SRMs of your favorite flavor-- off the shelf 120 inch Titan III-C boosters, 156 inch SRMs, or the 260 inch SRMs tested by Aerojet as possible first stage replacement for Saturn IB.
More to come... OL JR
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