Nov 242021
 

A few weeks ago SpinLaunch managed to spin up their demonstrator and lob a projectile into the sky. I did not give it a whole lot of thought; it just doesn’t impress me a whole lot. There are easier ways to accelerate a projectile to the speed of sound.

However, Thunderf00t *did* give the concept a lot of thought, and he’s anti-impressed. One detail that I’d noticed was that the projectile emerges from the “muzzle” of the launch tube crooked. One thing I *didn’t* do was closely examine the faint and blurry in-flight footage of the projectile. And I should have, because the projectile is *tumbling.* In retrospect this makes sense: while attached to the rotating arm, the projectile is rotating at about three revolutions per second. Once released, it will retain that angular momentum; since it’s not touching anything – it’s not riding rails, or sliding down a barrel, nor at its fins reacting against air since it’s in a vacuum – there is nothing to arrest that rotation. So it leaves the “barrel” tumbling. This would be *disastrous.* Even if the fins could stabilize the projectile in flight, a massive amount of launch energy would be wasted in the process, the trajectory would be virtually randomized, accelerations would be massive and all over the place.

In short, this thing seems to be a whole lot of nothing as far as being practical.

 Posted by at 10:49 pm
Nov 172021
 

And a space program!

A few weeks ago the United Nations put out a video where an indifferently rendered Utahraptor goes before the United Nations and argues that he knows a thing or two about extinction, that extinction is a bad thing, and that humans should not subsidize their own extinction. Rather, humans should work *against* extinction. These are all good points. And the logical conclusion to draw from this is that mankind should, at once and without delay, convert the money currently being wasted on social welfare programs into industrial-scale efforts to develop gigaton-yield thermonuclear devices, deep-space comet and asteroid detection and tracking systems, fast and efficient interplanetary transport system. The nukes would be used to divert potential threats; the improved propulsion and power systems would have the secondary benefit of opening the entire solar system and its resources to exploitation and colonization. heavy industry and its pollution could be moved off-world; Earth could be converted into a garden. By doing so, mankind – and every species we choose to bring with us – would be rendered *almost* immune from extinction. Nothing else mankind could possibly do would have a hope in hell of being even a minuscule fraction as impactful.

 Posted by at 10:12 am
Nov 132021
 

Some programs fade away; some die sudden deaths. The Saturn V, and the Apollo program in general, seemed to just sort of fade away; the public perception *seems* to be that as public interest in Apollo post Apollo 12 or so rapidly faded, interest in continuing Apollo faded, and thus the program was just allowed to die, finally killed off by Nixon.

Small problem with that narrative: the actual date of the death of the Saturn v can be precisely determined. in the NASA History office archive some years ago I found a memo by NASA Administrator James Webb, dated July 31, 1968, where the production of new Saturn V vehicles was cancelled. This limited the future of Apollo moon missions to only those Saturns already then under construction. Note that this is almost a *year* prior to Apollo 11 landing on the moon, and about four months prior to the election of Richard Nixon. Nixon could, perhaps, maybe, have restarted Saturn v production, but that’s not clear: when programs like this are cancelled, the staff vital for them *scatter.* Tribal knowledge evaporates. Equipment is sold for scrap, left to rust. Restarting production likely would have been fabulously expensive.

In mid 1968, the Apollo/Saturn program was obviously not facing post-success disappearing interest. The public was still thrilled. What NASA was facing was a slashed budget, with funds needed to further the progress of mankind being diverted to “Great Society” social programs. So instead of missions to the Moon and beyond, we got another fifty years of malaise, burdensome taxes and families being actively discouraged and dissolved. Thanks, LBJ. Thanks a lot.

 Posted by at 2:28 pm
Nov 132021
 

I stumbled across some paperwork that for no readily apparent reason I’ve kept for a quarter century. Shown below are two correspondence that might be of some amusement.  They deal with my very first “real” job after graduation, when I was hired to work on a The Next Big Thing project for Orbital Sciences Corporation.

First up (some personal data redacted):

Neato! I’m hired! So I packed up my stuff (including my baby archive, which fit in two boxes), drove from Illinois to Virginia right smack in the middle of the Blizzard Of The Century, spent a bucket of cash for an apartment, and started an exciting new adventure, sure to be filled with excitement, career fulfillment and fair and reasonable treatment from my employers. What could possibly go wrong?

Gee, that was fun.

It was a short, sharp shock that gave me a good solid look at the aerospace industry in the US. Unfeeling corporations, sociopathic bosses, incredibly blinkered, short-sighted management *and* self-serving unions, all beholden to quite possibly the *dumbest* politicians in human history.

I shoulda gone into art. I have no real talent for it… but then, I’ve seen “Star Trek: Discovery” and it’s clear that talent and skill are no longer important or even desirable in modern artistic endeavors.

 Posted by at 8:18 am
Nov 022021
 

The modelling is nearly complete. Unfortunately, the fully assembled version of the CAD model is so complex that none of my computers would even attempt to render or shade it; all I seem to be able to get are wireframe images. That’s what I get for being poor, I suppose. The shuttles are themselves each as complex as many of the CAD models I’ve made.

 

 Posted by at 7:25 am
Oct 312021
 

The rewards for October, 2021, have been sent out. Patrons should have received a notification message through Patreon linking to the rewards; subscribers should have received a notification from Dropbox linking to the rewards. If you did not, let me know.

Document: “C-131C Tactical Unit Support Airplane,” 1953 Consolidated Vultee briefing on cargo aircraft military capabilities

Document: “Aerodynamic Model test Report Titan IIIM Final Posttest Report 0.0535 scale Force and Pressure Model Phase II,” 1967 Martin Report Of Unusual Size (ROUS, 353 pages) describing with charts, data, model photos and diagrams, of the proposed Titan IIIM topped with a Manned Orbiting Laboratory.

Diagram: General Arrangement of the Douglas D-558 research aircraft (provenance unknown)

CAD Diagram (for $5-level and up): Medusa Spinnaker, second illustration of giant but lightweight nuclear pulse propelled spacecraft

 

If this sort of thing is of interest, sign up either for the APR Patreon or the APR Monthly Historical Documents Program. *ALL* back issues, one a month since 2014, are available for subscribers at low cost.




 Posted by at 6:46 pm
Oct 302021
 

Planetary Defense: Nuclear Explosion Can Disrupt Hazardous Asteroid To Protect the Earth

Lawrence Livermore Labs simulated popping off a 1 megaton nuke *above* the surface of a 100-meter asteroid. Low and behold, it blows the asteroid into flinders, an expanding cloud of bits. If done two months prior to an impact with Earth, 99.9% of the mass of the asteroid *misses* the Earth. And the thing is: even if it all still hit, from a certain point of view you’d rather have it blown apart into a bajillion tiny rocks than one big one. Yes, every satellite and spacecraft on that side of the planet is now likely in a  world of hurt… but if your 100 meter rock is turned into gravel, ain’t none of that getting down to the ground as anything that could cause any real damage.

It’s easier to replace a sky full of comsats than a city or a country.

 

 Posted by at 1:10 pm
Oct 222021
 

The job of an actor is to look pretty and say words scripted for them. When they say their *own* words… you get crap like this;

‘What a fool’: fellow actors criticise William Shatner’s space flight

Appearing on The Jonathan Ross Show on ITV, Collins said: “It’s amazing isn’t it? What a fool. Who wants to do that? No, absolutely not. Did you see Bill Shatner?

“He was in the air and they were turning him upside down. Let’s take care of this planet first before we start going off.”

Asked if he would visit space, fellow show guest [Brian] Cox replied: “No, absolutely not. I think it’s ridiculous. I remember watching [Sir Richard] Branson and Bezos going up for their 11 minutes or whatever …

“No, we do not need more spaceships. We’ve got enough crap flying around up there. We do not need any more.”

Shut up, morons.

I have zero respect for people who rake in outsized buckets of cash for playing pretend, then get pissy that other people are spending *their* buckets of cash on things they don’t like. *Especially* when those things promote the general welfare of mankind.

 Posted by at 10:56 am