Category Archives: Science / Space Race

Space, Computers, and other technology

Earthbound Pioneer (Explorer VI; 8-08-1959)

We are now in the second phase of the Space Race.

Decades from now, people will debate over the exact date of the turning point.  Some will argue that it started when countries started sending rockets to the moon, leaving the shackles of Earth's orbit.  Others will say that spaceflight didn't leave its infancy until humans had been sent into space.

But, I contend that a whole new ballgame opened up yesterday with the launching of Explorer VI.

This latest satellite is, in some ways, just an evolutionary step.  Its payload of experiments is little different from the slew of instruments carried by its predecessors, the Air Force Pioneers.  It's got geiger tubes and scintillators for measuring cosmic rays, magnetometers for mapping Earth's magnetic fields, a micrometeroid detector, and a crude TV camera–all devices that went up on the ill-fated Pioneer II.

But, the probe also has an impressive array of solar cells affixed to four paddle wheels that make Explorer look like a little windmill.  Moreover, the satellite is equipped with two communications systems.  One of them is analog, like those employed by all previous satellites, in which information is communicated by modulating the amplitude and/or frequency of transmissions, like your AM or newfangled FM radio.  The other is digital using nothing but streams of ones and zeroes.  This method is far less prone to error and noise, and it uses bandwidth more efficienctly, requiring less power.

A digital system is above and beyond the needs of an orbital probe, so why bother including it?  Because Explorer VI is a test-bed.  A spacecraft very much like it will be launched to Venus some time in the near future, and it will need a digital system to communicate from that vast 25 million mile distance.

Until Explorer VI, we were launching little experiment packages.  Now, we have a bonafide orbital scientific and engineering laboratory in space, the results of which will revolutionize where spaceflight goes from here.

A natural extension of this is that I don't have this satellite's results for you yet.  Unlike my other columns, where I've been able to sum up a mission and its findings generally in one article, Explorer VI is going to collect mountains of data, and it will take time to sort it out. 

So stay tuned! 

P.S. The October 1959 issue of Galaxy has come out.  I'm half-way through and will be telling you all about it next week.  Come join me in my journey (but try not to send me letters about it until I publish the articles).

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Loveliest of Bodies (Venus, 7-25-1959)


from Timothy Gleason

Ishtar, Aphrodite, Venus—whatever you call it, the brightest of star-like objects in the sky has mesmerized humans for the entirety of recorded history, and likely beyond.  It was among the first subjects of telescopic study, and you can bet it will be the first planetary target for space probes.

It is astonishing that, given all of the interest the Planet of Love has engendered, we know so little about our nearest planetary neighbor.  The 2nd planet from the sun, Venus is an orb of mystery–she has been most reluctant to divulge her secrets. 

Galileo saw that Venus went through phases, like the moon, and deduced that Venus was bright with reflected sunlight.  Through transits of the sun (which happen twice a century—I hope I live to see the next ones in 2004 and 2012), we have learned that Venus has a thick atmosphere.  More recently, it has been determined that Venus’ atmosphere contains several hundred times the concentration of carbon dioxide as ours.  Measuring the Doppler shift of the planet’s edges, it appears that the planet rotates very very slowly, perhaps taking months to complete a rotation. 

From the planet’s period and effect on other planets, we know that its mass is actually quite close to that of the Earth, just a touch smaller.  It almost certainly has a rocky surface.  For these reasons, many have called Venus “Earth’s twin.”

Being closer to the sun, it is likely that Venus is much hotter than the Earth, but it is difficult to say how much hotter.  It used to be thought that the surface of Venus might be a global, steaming ocean, but it is more widely believed now that there is no liquid water to be found, and perhaps precious little in the atmosphere.


From Exploring the Planets (c) 1958


From Exploring the Planets (c) 1958

But that’s all we know!  The clouds are too thick to see through, so we can’t see the surface as we can with Mars.  Perhaps in the near future, microwave and radio astronomy will be keys to mapping Venus, but for now, it’s just a silvery pearl.

Now, every year or so, when the alignment of planets is right, we have an opportunity to send a probe to Venus on a low-energy orbit that accommodates the largest payload for any given booster.  The next one will be in November.  Sadly, though NASA did have plans to launch a Venus mission this year, it has been pushed back due to development teething troubles.  A test satellite with prototype equipment will be sent into orbit next month; if it does well, it bodes well for a Venus probe, though such won’t launch until the latter half of next year.

It may well be that the Soviets beat us to the punch.  Look for a launch later this year (but note that their opportunities are slightly different from ours as they launch from a different part of the globe).

Next up—a review of the latest IF!

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Exploring the ground (7-22-1959)

Just a quick stop-press today while I wait for the new magazines to come in.  Apparently, NASA tried another satellite launch last week on the 16th.  A Juno II rocket, which is a modified Jupiter Intermediate Ranged Ballistic Missile, had the latest in the Explorer series installed at its tip.  Weighing 42 kilograms (that’s 92.4 pounds for the metrically uninitiated), it looked a bit like a bigger Pioneer 1–two truncated cones welded together at their base. 

As might be expected from the choice of booster, it’s a product of Von Braun’s Alabama Army-sponsored team (which, rumor has it, may well be folded into NASA proper soon).

Its instrument complement was pretty standard stuff: geiger counters, x-ray detectors, micrometeoroid plates, thermometers.  What makes this craft special are the solar power elements built into the design; the probe was built to provide long-term measurements of cosmic radiation and the Earth’s heat balance. 

Sadly, the rocket lost power to its guidance system immediately after launch, and the thing started to spin in a wide, dangerous ark.  A range controller detonated the booster just 5 and a half seconds into the flight.  Too late for the Fourth of July, and I doubt the scientists were pleased.

I understand that the next flight of the package is scheduled for October.  My fingers are crossed, but I understand NASA is planning an Air Force-contracted shot next month, and that probe, made by my friends at Space Technology Laboratories, may well include all of the same instruments and more.

Thus, the Space Race continues domestically as well as abroad.  Nothing like good ol’ fashioned American competition to keep the satellite makers on their toes! 
See you soon!

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Space Dogs and opportunity costs (7-14-1959)

It’s another flight for Otvazhnaya, the daring Space Dog, in another zoological journey.  This time Otvazhnaya was joined by a different dog from last time (named “Pearl,” or the Russian equivalent thereof) as well as a bunny, whose name I do not yet know.  The flight, which took place on July 10, appears to have been a duplicate of the July 2 flight.

According to TASS, the Soviet news agency, the purpose of the flight was to collect more data on the effects of radiation on living creatures.  Per the agency, the space environment is not overly dangerous to space travelers.  I imagine the flight was also to make sure that the spacecraft parachutes worked properly, since rapid impact with the ground is overly dangerous for space travelers.  The rocket also contained a number of scientific instruments, too, for measuring the nearer regions of space.

All very exciting stuff, and it points to a level of progress very similar to our own.  One wonders how much the Soviets must allocate to their space program to match our systems.  While the Soviet Union looks big on a map, and it looms large in our headlines, there is no doubt that their economy is much weaker than ours.  That they can afford to have regular launches means other fields (say apartment construction, food production, automobile manufacturing) must be suffering.

You won't hear about that from TASS, of course…

In two days, this month's Astounding!



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Space Bunnies! (July 9, 1959)

It’s time for a Space Race update!  I hear mixed cheers and groans.  Well, it takes all kinds to make a column…

The Soviets have launched a rocket into space, apparently on a sub-orbital path using an equivalent to our Jupiter IRBM, with several living passengers.  They are the dogs, Otvazhnaya and Sznezinka, as well as the first Space Bunny, Marfusa.  The flight apparently took place on July 2, and all animals reportedly returned safely to the Earth.  In fact, if the report be believed, this was Otvazhnaya's third such flight.  Given the long press delay and the lack of reporting on failures, I take Soviet press releases with several grains of salt.

Still, if it’s accurate, it means that the Soviets figured out animal recovery well ahead of us.  I’d estimate that the Communists are about half a year closer to a manned mission than we are.

Speaking of estimations, take a gander at IMPACT OF US AND SOVIET SPACE PROGRAMS ON WORLD OPINION, hot off the presses of the USIA Office of Research Analysis.  As it says on the tin, it’s a fascinating snapshot of domestic and world opinion of the space program.  It’s short, so do read it.

In particular, I liked the point that Space Race reporting has become more rational, less sensational.  I also enjoyed seeing the breakdown of those nations who feel the U.S.S.R. is ahead in the Race versus those who feel the U.S.A. is in the lead.  The distribution is predictable, I think.

Per the report, virtually all reporting links the space programs of the two superpowers with their military programs, which I think is sensible.  That said, it is my understanding that there is increasing resistance in the U.S. Congress to letting the Army team under Von Braun continue development of the enormous Saturn rocket.  It’s just too big to serve any practical military service, it is said.  If the program is transferred to NASA, our fledgling civilian space program, perhaps we will have a truly inspiring non-military space presence. 

If we can forget what Von Braun’s job was just 14 years ago.  Ah well, “Once the rockets are up, who cares where they come down!” as one wise man has observed.


Image by Starbound

See you in two days!



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Two for two (Vanguard and Discoverer failures; 6-26-1959)

It's another Space Race update from The Traveler!

A Vanguard went up on the 22nd, but I decided to hold off on writing a column as I knew a Discoverer was set to launch on the 25th.  I'm afraid I've got a double-whammy of disappointment for my good readers.

This new Vanguard had two thermistors (heat-activated electrodes) adorning the magneisum-alloy skin of the 20" diameter sphere, one facing the sun, one facing inward.  The point of this experiment was to measure the heat balance of the sun's radiation on the Earth.  Why is this important?  The primary engine for the Earth's weather is the sun's heating of the atmosphere.  Hot air rises, cold air sinks, and the spinning Earth mixes all of this thoroughly and chaotically.  If we knew how strong the sun's rays were at various latitudes, we could correlate these findings to heat flow in the lower atmosphere and learn a great deal.


NASA photo–I don't know who those folk are.

The rocket soared out of sight of observers, seemingly on a flawless trajectory.  However, it appears that one of the second-stage pressure valves was faulty; no signal from the satellite was ever caught on the ground by any of the many Minitrack receiving stations around the globe.

The sad news is that there is only one booster left to the Vanguard program.  After the next shot, it's all over.  I hope these experiments don't get abandoned!


From a postcard I picked up this week–wishful thinking, as it turned out.

Discoverer 4 took off yesterday, and it seemed to be a good launch, but then the second stage (the "Hustler") failed, and the payload never reached orbit.  From the press releases, the Air Force was testing a new capsule designed to carry monkeys.  Given that there were no actual passengers on the mission, I can think of two possibilities:

1) The Air Force doesn't want to actually send up any more animals lest the critter-lovers of the world let out a cry and hue (bigger than they already have), at least until the flyboys have perfected their rockets, or

2) There was a payload on Discoverer 4 equipped with eyes, but it wasn't an animate one.

Which one do you think is more plausible?

In other news, my F&SF and Astounding magazines have come in for this month, and I picked up last month's IF as well.  I'm also reading Sam Merwin's Well of Many Worlds, one of the first "sideways in time" stories.  So expect a lot of fiction reviews in the near future!



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Four blind mice (Discoverer III;6-04-1959)

It's a bad time to be an experimental animal, if there ever was (or will be) a good one.

The Air Force launched Discoverer III last night with a payload of four plump black mice.  As you know, if you read the papers or my column, Discoverer is a satellite program for shooting missions into polar orbit (i.e. over the poles, ultimately covering the entire Earth) ostensibly for the purpose of sending biological specimens into space and then recovering them in a detachable capsule. 

Of course, a polar orbit is particularly good for reconaissance, and a detachable capsule can carry film as well as mice.  I'm sure the Soviets aren't buying the "space science" angle any more than I am.  Still, if we get any science out of the program, that's an added bonus.

Unfortunately, the mice of Discoverer III can't catch a break. Last week, the launch was scrubbed because telemetry from the mice had ceased.  The technicians thumped on the nose cone, thinking the mice were asleep.  They were, in fact, dead, having eaten the krylon coating of their cages.

A few days later, the launch was scrubbed when the nose cone sensors returned a 100% humidity level.  Turns out that the mice had urinated on the sensors (a similar incident looks to have happened on one of last year's Thor-Able flights).

Yesterday, the rocket finally launched, but the second stage of the Thor-Hustler rocket flipped the payload and drove it straight into the Pacific ocean.  Nothing could have survived that. 

I understand that this incident has piqued the ire of several organizations promoting the ethical treatment of animals, particularly as this comes right on the heels of a suborbital Jupiter test flight on May 28, which had the monkeys, Able and Baker, as unwitting passengers.  Though the mission was a success, I have it on good authority that Able died the other day after an unsuccessful surgery to remove an electrode.  Six months before, a similar flight resulted in the death of its passenger, Sam the monkey.  I wonder if the Air Force will abandon the pretense of the bio-medical mission and just launch cameras from now on.

So that's that.  I believe there's another Discoverer launch scheduled in a few weeks along with another Vanguard shot.  I'll report on them if and when they happen.  In the meantime, I hope you enjoyed this month's Galaxy, and I'll finish up my report on the August issue in two days!

In the meantime, let's hoist a glass to our intrepid, lost rodentnauts.  You deserved better.

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The shape of things to come!  Part 2 (New rockets; May 17, 1959)

My cup runneth over!

When I started this column, I had worried that the increasing paucity of new science fiction would mean I'd run out of things to write about.  Now, here we are seven months later, and I have a back-log of items on which to report.  I suppose I shall just have to write constantly to get it all out.  I hope you don't mind…

First in the queue, I wanted to wrap up the Homer Newell article I reported on five days ago, about America's new stable of rocket boosters.  Last time, I talked about the new rockets expected to be in used by 1960.  Now, let's press on a few more years into the future for a truly exciting sneak peek.

With the exception of the Vanguard and (soon-to-be) Scout, all of our space rockets are really borrowed military missiles.  But as time goes on, we will see more purpose-built boosters that will be more powerful and efficient.  The first true space rocket vehicles will be second stages designed to go on the Atlas ICBM, currently our biggest military missile. 

The smaller of them, the Vega, is a purely civilian design that will be developed from the first stage of the Vanguard.  The Atlas-Vega will to launch satellites into geo-stationary orbit for the first time.  A bit of explanation as to the import of this: the Earth rotates on its axis every 24 hours.  The period of a satellite's orbit is dependent solely on its distance from Earth–the closet the satellite orbits, the shorter the period.  Right now, our best rockets can barely get satellites into a low orbit with a period of about 90 minutes.  But the Atlas-Vega will propel satellites up to a height where the period matches the period of the Earth's rotation.  This means the satellites will, to a ground observer, appear to be stationary (or at least will wobble about around a fixed place in the sky).  Arthur Clarke wrote about the value of these satellites more than a decade ago; they will be way-stations for global communications.

An even bigger stage is the Centaur, which will launch truly massive payloads to the moon and to the planets.  By the middle of the next decade, expect orbiting laboratories around Earth's closest celestial neighbors.  To me, this is more exciting than sending a person into space, who probably won't be able to do much but give entertaining color commentary.

The real wave of the future is likely to be Von Braun's new brainchild–the Saturn family of rockets.  These boosters are being developed completely from scratch and will be an order of magnitude bigger than anything currently in the pipeline.  The biggest of them, the Nova, will be capable of landing 20 tons on the moon in one go!  We may well see people on the moon by 1967. 

My favorite part of the article is Dr. Newell's personal appeal to us, the citizen-scientists of the nation, to send in proposals for experiments.  NASA is brand-new, and they need all the help they can get to develop not just the hardware, but the ideas that will drive the creation of the hardware.  It's scientific democracy and it's greatest, and perhaps it will prove an advantage over the Soviet system.

Day-after-tomorrow: Invisible Invaders!  There are A-movies, and there are B-movies.  This was not an A-movie.  The popcorn was yummy, though!

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The shape of things to come! (New rockets; May 12, 1959)

I had planned to write about science fiction today, but then I found an article by Homer Newell, Assistant Director of Space Sciences at NASA, talking about the new stable of rocket boosters about to come into use.  So, it's time for the science-fiction-into-fact column!

For the first year of the Space Race, the United States had just three boosters at its disposal.  One was the slender Vanguard, which had its share of mishaps before achieving its objective.  The Vanguard was the Navy's contribution to this nation's orbital activities, though it was developed under civilian authority (the only civilian booster to date, in fact, in the world).  The Juno I, also known as the Jupiter-C, about which there has been much nomenclature-related confusion was the Army's rocket, and it launched the first American satellite, Explorer I.  Finally, there was the Air Force's booster–the Thor IRBM mated with the top two stages of the Vanguard rocket, known as the Thor-Able.  It launched Pioneers 0-2.

Late last year, Von Braun's Army team took the top stages of the Juno I and put them on a bigger missile, the Jupiter IRBM, and created the Juno II, which launched Pioneers 3-4

That was all she wrote for the International Geophysical Year, but now there's a brand new crop of boosters that have been unveiled:

One of them, the Thor-Hustler, has already been used to launch the first Discoverers.  I know what a Thor is, but I'm not sure about the Hustler.  I think it's a booster designed for a self-propelled bomb to be mounted on the sleek new jet bomber, the B-58 Hustler… but I could be wrong.

As might be expected, the powerful new Atlas is being mated to the Able and Hustler boosters just as the Thor was, and its heft should be correspondingly higher.  After all, the Atlas is designed to send atomic bombs all the way to Moscow from California, whereas the Thor is based in England.  I believe the Atlas Able will be used to launch a set of bigger Pioneers to the moon.  I don't know what the Atlas Hustler will be used for.

But perhaps the most exciting development is that of the Scout rocket.  Able to put 300 pounds in orbit, a good ten times the ability of the Vanguard rocket, it is also five times cheaper to launch–a mere half a million dollars as opposed to 2.5 million dollars.  It is also a civilian booster.  Expect this little number to usher in an uprecedented new era of space shots.  Soon, the sky will be filled with scientific beep-beeps!

There's more to tell, but I think I'll wait until next time to discuss it.  Oh, you want a hint?  Let's just say that there's a big planet out beyond Jupiter…  and it's namesake is going to be a doozy!

To wrap up this news segment of Galactic Journey, I present to you our beloved Vice President announcing the nation's "Handicapped American of the Year," Dr. Anne H. Carlsen of Grantsburg, Wisconsin, who lacks both hands and feet.  I suppose it's appropriate that Mr. Nixon gave this award; after all, he is similarly afflicted, lacking charisma or conscience. 

Just a word to the wise to those sending me comments via the U.S. Postal Service: you'd better do it quick, because the Postmaster General has asked permission to raise the price of a First Class stamp from four cents to a full nickel! 

See you soon!

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Earth: 0, Space: 3 (Atlas, Discoverer, and Vanguard; 4-16-1959)

It's been an exciting though disappointing week in the world of space exploits.  Here is a summary of what you've missed if you haven't been following the papers:

DISCOVERER 2 SOARS INTO ORBIT; LAYS EGG NO ONE CAN FIND

The Air Force launched another Discoverer on April 13.  After 17 orbits, the satellite ejected a capsule for recovery.  The landing spot was supposed to be around Hawai'i, but a task force of ships and aircraft were unable to find the capsule.  Now, there wasn't anything on board this one, but later shots are supposed to carry biological specimens.  And maybe film for developing.  Oops!  Did I say that out loud?

In any event, no one knows where it landed.  Since Discoverer is in a polar orbit (and still otherwise functioning, to all reports), I suppose the capsule could have fallen anywhere along its trajectory.  If the capsule was ejected too early, it would have hit Antarctica or the South Pacific.  If late, the track crosses Alaska, the Arctic ocean, and down through Scandinavia, the Eastern Bloc nations, and all along central Africa. 

Assuming the latter, its destination could be somewhere in the ice, perhaps a communist station, or next to some frightened zebra.  We may never know.

VANGUARD IS ANOTHER FLOPNIK

The Navy boys tried to launch a sequel to the orbiting but unsuccessful Vanguard 2.  This shot was a two-fer–atop the slim rocket was not only a 10kg ball with a new magnetometer on board (for mapping magnetic fields) but a balloon for tracking air density.

Sadly, the rocket only got up a hundred miles before falling back to Earth.  It's a shame–Von Braun's team is having success after success, but the Vanguard program is stuck in first gear.  Let's hope they can get Vanguard 3 up before the year's end!

MAIDEN LAUNCH FOR NEW ATLAS A BUST

The Atlas is America's first Intercontinental Ballistic Missile (ICBM).  It is being manufactured just a dozen miles from my house at Convair's Kearny Mesa plant.  The first incarnation of the Atlas was test-launched in 1957 with a dummy warhead.  Since then, Atlases have been launched with some regularity from Cape Canaveral, including the December launch of SCORE, which went on the improved Atlas B.  The Atlas C was the last of the prototypes, and it may be used this year for an upcoming Venusian mission.

But the Atlas launched on April 14 was an Atlas D, a more-powerful version designed to be the first operational ICBM, the one they'll bury underground in protective silos to be turned loose on the Soviet Union on a moment's notice. 

Eventually.  The one launched last Tuesday malfunctioned right out of the gate, one of its three engines blasting at reduced capacity.  It limped along for 20 seconds, burst into flames, and was destroyed 17 seconds later by ground control.  And this is the booster that the Mercury astronauts will ride into orbit.  Brave men they!

So, as they say, "All the news that fits, we print!"  See you in two days!



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