Jul 312018
 

Today, the notion of building a space launch system that uses solid rocket boosters is kinda… silly. Liquids have much higher performance and, as SpaceX has conclusively demonstrated, liquids are quite recoverable and reusable, far easier than solids. But fifty, sixty years ago, solids made a *lot* of sense. They worked, they were reliable, they did not require a whole lot of delicate , constant babying. And for military purposes, they were (and remain) fantastically useful; load them up, stick them in a tube, forget about them for a few years, fire them at a moments notice.

This piece of Aerojet artwork dates from 1961 at the latest and depicts a large solid rocket booster, presumably for space launch. The diameter was 288 inches… larger than the largest actually-tested solid rocket motor at 260″, smaller than the 396″ diameter of the Saturn V (also the diameter of the largest solid rocket motor design I can recall seeing). Note that it uses four nozzles. This is not uncommon on military solids such as the first and second stages of the Minuteman and some sea launched ballistic missiles; it’s costlier and weighs more than a single nozzle, but it give you the same performance at a shorter length. And when your missile is stuffed into a silo or, worse, a submarine, compactness is important. but those missiles all also constrain the maximum dimensions of the nozzle assemblies to be no greater than the motors they are attached to… again, so the missile can fit in a tube. THIS design went another way, with nozzles well outboard. This precludes silo launch. The advantage for a non-silo launched space booster to split up the nozzles like this is unclear. Some small reduction in total length, and some roll control authority.

Vaguely related: US Bomber Projects #17 has an article and diagrams of a somewhat smaller 260″ diameter solid rocket boosted ICBM from Thiokol.

 Posted by at 6:32 pm
Jul 292018
 

Looking through ebay tonight I found a seller with a 1981 issue of a stamp issued in the island nation of Comoros, commemorating approach and landing tests of the Space Shuttle Enterprise. There have been a *lot* of spaceflight related stamps issued by dinky little nations; my assumption has always been that this is a reasonable and understandable way for these small countries to make a little scratch from foreign stamp collectors, rather than as a way to mail letter.

Anyway, this particular stamp comes still attached to a souvenir sheet. Additional artwork on the sheet includes the starship Enterprise (linking it to the Shuttle), a Boeing X-20 Dyna Soar, which I’m a little surprised they were even aware of, and a portrait of Austrian rocket engineer/scientist Eugen Sanger, who died in the 1960’s. An unusual bunch to see together.

 

 Posted by at 10:19 pm
Jul 292018
 

This piece of artwork of the Convair “Outpost” seems to be a little bit later than the others. It depicts an Outpost with a nuclear reactor for a power sources; this is held off at some (not terribly great) distance for the purposes or radiation mitigation.

 Posted by at 4:28 pm
Jul 262018
 

Illustrations from a childrens book about space stations from 1960. This was when Men were Men, Women were Women, it was okay to be white and everyone wore their best business suits to board a rocket into space.

Sigh. The optimism of that era is just plain unrecognizable. The past is like a whole different country.

 Posted by at 12:35 pm
Jul 252018
 

Very late 1950’s Convair promo art of their “Outpost” space-base built from an Atlas launch vehicle. This was publicized enthusiastically by the likes of Krafft Ehricke; it preceded the MOL program, and would have resulted in a manned facility somewhat similar in size, thought dissimilar in capability. The MOL was a pre-finished, single-launch space lab, while the “Outpost” as a “wet lab” would have required considerable effort by workers in space suits to finish. To service the Outpost, an Atlas with a Centaur-like upper stage would orbit two wedge-like lifting bodies.

 Posted by at 4:10 pm
Jul 182018
 

Modeling of all the parts is done. Some refinement is probable, as some of the bits shown here – the plumbing lines in particular – are pretty small. The plan is to include the walkway to connect the two vessels. In all likelihood the walkway will be a single solid-cast part.

Both vessels are modeled at a higher resolution than is necessary for 1/144. They’re be great at 1/72, perhaps even 1/48. but there are currently no plans for larger-scale (and much more expensive) kits.

 Posted by at 9:11 am
Jul 092018
 

China reveals details for super-heavy-lift Long March 9 and reusable Long March 8 rockets

Long March 8: meant to emulate the Falcon 9 with a vertically-recovered core, but also use vertically-recovered solid rocket boosters (likely via parachute, though art seems to indicate that they too will have landing legs).

Long March 9: intended to be Saturn V class for manned missions to the Moon and beyond.

No indication that the Long March 9 is aiming for reusability, so it seems likely that the Chinese are emulating not the BFR but the SLS. It is too much to hope that China will emulate the spectacular economics of the SLS as well.

 

 

 Posted by at 11:31 pm