Tag Archives: mr-1

[Dec. 19, 1960] A Very Good Day (Mercury Redstone 1A)

There are days when everything goes right.

Here we are at the end of a difficult year for space travel.  The Air Force had nearly a dozen failures in a row with its Discoverer proto spy satellite.  The Pioneer Atlas Ables moon shots were all a bust.  Even the successful probes rarely made it into space on the first try, viz. the communications satellites, Echo and Courier.  The American manned space program was dealt a number of setbacks, limping along at a pace that will likely get it to the orbital finish line quite a bit behind the Soviets. 

But Discoverer now has enjoyed a several-mission success streak.  The latest Explorer probe is sending back excellent data on the ionosphere, and its elder sibling is still plugging away in orbit, returning information on the heat budget of the atmosphere.  TIROS 2 provides up-to-date weather photos from overhead.

And this morning, just a few hours ago, Mercury Redstone 1A carried a production model Mercury spacecraft into outer space.  The suborbital mission took only 15 minutes, but it was an exact duplicate of the trip a human astronaut will take in the next few months.  The capsule was retrieved from the Atlantic in short order, and to all accounts, the flight was a complete success.  Just one more mission, crewed by a trained chimpanzee, and after that, America will have a man in space.

It is still unknown just who that person will be.  Any of the "Mercury Seven" are qualified, of course.  Moreover, the group includes representatives all three branches of service that fly jet planes (Air Force, Navy, and Marines) so I don't think that will be a factor.  John Glenn is the most charismatic; Alan Shepard has the most test pilot hours; Scott Carpenter is the handsomest; Donald K. (Deke) Slayton has the most appealing nickname. 

It's probably a good thing I'm not in charge of the selection process!

Speaking of good days, I am currently holed up in The Book Tree, a lovely little book store on Adams in San Diego.  The proprietor is kindly allowing me to bang on the keys of my portable typewriter so I can get this stop-press out.  He has an excellent science fiction selection, including an intriguing new book I picked up by Ben Barzmann: Twinkle, Twinkle, Little Star, which I hadn't seen on the shelves of my normal haunts.  I highly recommend this establishment!

And now, back up Highway 395, the fast way to Escondido from San Diego.  See you soon with a review of this month's Analog

[Nov. 23, 1960] Premature Ejection (Mercury-Redstone 1)

The American manned space program is on a tight schedule if it wants to place an astronaut in orbit before the Soviets.  The Communists already have a striking lead.  They had it three years ago when they launched the first Sputnik, and they've maintained it with the recent Sputnik 5, which featured two Muttniks, who were returned safely to Earth after an orbital flight. 

It may well be that, as I write this, the Soviets will already have put a man in space.

NASA is moving at as brisk a pace as they can manage while doing their best to guarantee the safety of our spacemen.  I can only imagine the frustration and impatience of the seven Mercury Astronauts, who were picked a year and a half ago as they cool their heels watching the test program play out.

So far, we've seen several low altitude launches of the Mercury spacecraft (Little Joe).  There has been a test of the Atlas orbital booster (Big Joe).  But there had yet to be an all-up suborbital test of the Mercury-Redstone, mimicing the first few missions that will be flown.

Until the day-before-yesterday.

MR-1 has been on the launchpad at Cape Canaveral in Florida since late October.  No pilot was assigned to the Mercury capsule, not even a monkey or a dog.  The flight was just to ensure that all of the components would work properly during a 15-minute trip.  The mission was originally scheduled for November 7, but a sudden loss in fuel pressure during the countdown caused launch to be aborted.

A similar problem was caught and fixed on the launch pad the morning of November 21.  As the count went to zero, all systems were go.  The Redstone booster ignited at 9 a.m. 

And promptly shut off a second-and-a-half later.  The booster stack was just four inches off the ground, and it settled back onto its fins without tipping over.  But the true ignominy of the event happened at the top rather than the bottom of the stack.  The escape tower, designed to drag the Mercury capsule to safety in the event of a booster failure, took off like a scared rabbit but left the spacecraft behind.  Adding insult to injury, the main and reserve Mercury parachutes then popped out the top of the capsule.  You probably saw this comic event on the TV news.

Yesterday, some brave engineers went out to unplug the booster and figure out what went wrong.  It turns out that the culprit was a safety mechanism, a little two-prong plug designed to shut off the booster engine if there was too much of a time delay between the disconnection of the prongs as the rocket launched.  The plug has been designed for the stock Redstone missile; the Mercury-Redstone combination, being heavier, took longer to launch and thus set off the safety mechanism.

The booster is damaged but reusable.  We'll likely see it fly in December.  Still, it's a setback in the program, which still has a few more test flights to go until a person can be launched.  I'm guessing we won't see an American in space until next Spring or Summer.