Sikorsky stowed-rotor ad

 transports, VTOL  No Responses »
Sep 272020
 

A magazine ad from 1967 looking for people wanting to hire on with Sikorsky. The ad shows a stowed-rotor helicopter design for the CARA (Combat Aircrew Recovery Aircraft) role. In the midst of the Viet Nam War, US pilots were being shot down over enemy occupied territory and needed rescue. A helicopter was a perfectly serviceable vehicle for that role… it could hover over the jungle and drop a line down through the canopy that the pilot could latch on to and be pulled up and flown away. The problem was that choppers are relatively slow. You’d much rather get to the ASAP before enemy forces could find them. A stowed-rotor design could theoretically fly at airplane speeds and hover like a helicopter. But as with all hybrid vehicles, being capable of two things means you’re great at neither.

Additional art of this design:

 Posted by at 11:42 am

Colossal Guppy art

 launch vehicles, spacecraft, transports  No Responses »
Sep 232020
 

Recently sold on eBay (but not to me, I got beat out) was a piece of concept art of the “Colossal Guppy,” a proposal by Aero Spacelines to convert a B-52 into a Saturn S-II carrier. All of the artwork I’ve seen before has shown a 12-engine design; this eBay art shows only the original 8 engines that were fitted to the B-52. I would assume that this is an earlier iteration of the concept, but can’t say for certain.

 Posted by at 10:46 pm

Venus Balloon

 research, spacecraft  No Responses »
Sep 192020
 

With the recent news of the possible discovery of the signs of possible life in the upper atmosphere of Venus, there is renewed interest in some quarters in the idea of atmospheric probes to sample the air and clouds directly. The most practical way to do this in something resembling a long term is with a balloon. With Venus’ carbon dioxide atmosphere, something usually useless as a lifting gas like nitrogen or oxygen could be used, but hydrogen or helium would work even better there than above Earth.

Such probes have been proposed for a *long* time. Here is art of  Martin Marietta design for a Venus balloon from more than fifty years ago.

Martin studied a Buoyant Venus Station as far back as 1967. Included in the study were the instruments to be carried, including “drop sondes,” expendable instrument packages that would be dropped from the station to radio back data from lower down:

 Posted by at 11:37 pm