Space Power … Electrical Power, That Is

Five years ago today — December 10, 2006 — the Space Shuttle Discovery launched from Kennedy Space Center on a mission to improve the electrical power subsystem on the International Space Station.


(The International Space Station as seen from STS-116. NASA image.)

Mission STS-116‘s crew consisted of U.S. astronauts William A. Oefelein, Joan E. Higginbotham, Mark L. Polansky, Robert L. Curbeam, Nicholas J.M. Patrick, and Sunita L. Williams, plus European Space Agency astronaut Christer Fuglesang of Sweden. With the exception of Williams, the crew spent 12 days in space; she, however, stayed aboard the ISS as the Expedition 14 flight engineer. ESA astronaut Thomas Reiter of Germany, previous ISS flight engineer, returned to Earth with STS-116.

From 1998 to 2006, the ISS had essentially been operating on a temporary power system. The STS-116 crew rectified that situation and prepared the station for its additional modules by rewiring the ISS … certainly not a complete “makeover” of the station, but in many ways an “extreme” one.

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Dual Launch on a Delta-II, and an Old Test Satellite

Ten years ago today — December 7, 2001 — a Delta-II launch vehicle carried two satellites into orbit from Vandenberg AFB.


(Artist’s conception of the Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics [TIMED] satellite. NASA image.)

Jason-1 was a joint mission between the U.S. and France: an oceanographic satellite intended to monitor the level and wave heights of the ocean surface. The Thermosphere-Ionosphere-Mesosphere Energetics and Dynamics, or TIMED, satellite was designed to study “the physical and chemical processes acting within and upon the coupled mesosphere,” i.e., that portion of the atmosphere between 60-180 km altitude. This region of the atmosphere “is difficult to study because it is too high for even the largest research balloons and still dense enough to quickly cause a satellite to decay from orbit.”

In earlier space history, on this date 45 years ago, Applications Technology Satellite 1 (ATS-1) launched from Cape Canaveral atop an Atlas Agena rocket. ATS-1 was a test platform for new spacecraft design concepts, particularly propulsion and attitude control, as well as a remote sensing satellite that collected meterological data and cloud cover images. ATS-1 also tested improved satellite communications.

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International Space Ferry

Ten years ago today — December 5, 2001 — the Space Shuttle Endeavour launched from Kennedy Space Center on a mission to the International Space Station.


(Shuttle Endeavour being readied for the STS-108 mission. NASA image.)

STS-108 delivered the Raffaello Multi-Purpose Logistics Module to the ISS. Astronauts Dominic L. Gorie, Mark E. Kelly, Linda M. Godwin, and Daniel M. Tani attached the Italian cargo module to the ISS’s Unity module, and ferried the ISS Expedition 4 crew — cosmonaut Yuri Onufrienko and astronauts Carl E. Walz and Daniel W. Bursch — to their new orbital home.

When Endeavour landed, it brought the ISS Expedition 3 crew — astronaut Frank Culbertson and cosmonauts Mikhail Tyurin and Vladimir N. Dezhurov — back to Earth.

I’ve noted elsewhere on this blog that I met Captain (USN) Culbertson several years after his return from the ISS. I sat next to him during a day-long NASA Industry-Education Forum. Good guy.

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Mars Pathfinder

Fifteen years ago today — December 4, 1996 — a Delta-II rocket launched from Cape Canaveral Air Station carrying the Mars Pathfinder lander and rover.


(Martian sunset (false color view). NASA image.)

Mars Pathfinder landed on Mars on July 4, 1997, and deployed the Sojourner rover (named for Sojourner Truth). After it landed, the Pathfinder’s name was changed to the Carl Sagan Memorial Station.

The mission was a great success, with the rover lasting twelve times longer than its design life and the lander lasting three times as long. The last Mars Pathfinder data transmission was sent on September 27, 1997.

Lessons learned from the Mars Pathfinder mission went into building the follow-on Spirit and Odyssey rovers, as well as the much larger and more ambitious Curiosity rover which launched November 26, 2011, on the Mars Science Laboratory mission.

May Curiosity meet with even greater success than its predecessors.

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First Successful Landing on Mars

Forty years ago today — December 2, 1971 — the Soviet Mars-3 lander made the first successful soft landing on the Red Planet.


(Mars-3 lander model at the Memorial Museum of Cosmonautics in Russia. Image from the National Space Science Data Center.)

Mars-3 had been launched on May 28th (see this space history blog entry), hot on the heels of Mars-2. When Mars-3 landed, Mars-2 had already become the first manmade object to reach the Martian surface.

Mars-3’s landing, in contrast to Mars-2’s, went smoothly. Once the petals opened and it began transmitting, however,

After 20 seconds, at 13:52:25, transmission stopped for unknown reasons and no further signals were received at Earth from the martian surface. It is not known whether the fault originated with the lander or the communications relay on the orbiter. A partial panoramic image returned showed no detail and a very low illumination of 50 lux. The cause of the failure may have been related to the extremely powerful martian dust storm taking place at the time which may have induced a coronal discharge, damaging the communications system. The dust storm would also explain the poor image lighting.

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Two Chimps: One an Astronaut, One a Writer

Fifty years ago today — November 29, 1961 — NASA launched the last “orbital qualification flight” for the Mercury program.


(Enos, the Mercury-Atlas 5 passenger. NASA image.)

Mission Mercury-Atlas 5 carried a chimpanzee, Enos, that “performed various psychomotor activities during the flight and was found to be in excellent physical condition following splashdown.” Enos was supposed to make three orbits around the Earth, but mission controllers brought him back after only two orbits because of a propulsion system problem.

(Aside: Lucky chimp, got to be an astronaut.)

As for the writer chimp, that would be me.

Usually, when it comes to literary primates, I think about hypothetical monkeys at typewriters, trying to produce Shakespeare; you too may be familiar with the infinite monkey theorem.* But monkeys have tails, and we already have Shakespeare, so I’ll live with the chimp metaphor.

Anyway, yesterday marked another metaphorical milestone for me in terms of my writing career, such as it is: I sent in my contracts — and, perhaps more important, my money — to upgrade to “Active” membership in the Science Fiction & Fantasy Writers of America.

Soon, then, even though my fiction doesn’t come close to paying the bills, I may be considered a “professional” writer.

___
*An even more entertaining Wikipedia entry: the infinite monkey theorem in popular culture.

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Space History: Apollo Enters the 'Hardware Phase'

Fifty years ago today — November 28, 1961 — North American Aviation won the prime contract to develop the Apollo Command & Service Module.


(Apollo-15 Command & Service Module, in lunar orbit. NASA image from Wikimedia Commons.)

This NASA history page has an interesting run-down of the competition and the source selection. The contract was critical to the overall Apollo effort:

The prime spacecraft contractor would develop and build the command module, service propulsion module, adapter (to fit the spacecraft to a space laboratory for earth-orbital flights and to the lunar landing propulsion section for lunar missions), and ground support equipment.


(Diagram of the Command Module interior. NASA image from Wikimedia Commons.)

While 14 companies received the request for proposal, in the final source selection North American Aviation competed against only General Dynamics Astronautics, General Electric, the Martin Company, and McDonnell Aircraft Corporation. Each company submitted a detailed technical and program management package in October 1961, which “were scrutinized and evaluated by more than a hundred specialists.”

The Martin Company actually had the highest aggregate rating from the source evaluation board, but North American Aviation had scored highest in technical qualifications and had “the longest record of close association with NACA-NASA and the most straightforward advance into space flight.” That apparently won the day for them, although Martin employees had been told — erroneously, as it turned out — on the 27th that they had won the contract.

With this contract, the Command & Service Module was the first part of the Apollo system to enter the “hardware phase.”

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Happy Thanksgiving! Oh, and Some Space History

Wishing you and yours a most Happy Thanksgiving!

Walking the dog this morning, I thought about things for which I’m thankful — the list is long, and I’m sure I didn’t think of everything. More things are coming to mind even as I type this.

I think it’s good for us to pause, reflect, and express appreciation for what we have — especially family and friends — rather than being bitter and resentful over things we don’t have. The Apostle Paul wrote that he had learned how to be content in every situation;* I’m not quite there yet, but I hope to be.

So, may we all find things for which we can be truly thankful, today and every day.

[BREAK, BREAK]

Now, the promised “Space History”…

Twenty years ago today — November 24, 1991 — the Space Shuttle Atlantis lifted off from the Kennedy Space Center on a Department of Defense mission.


(DSP satellite being tilted to its predeployment position in the shuttle’s payload bay. NASA image.)

During mission STS-44, astronauts Frederick D. Gregory, Terence T. “Tom” Henricks, James S. Voss, Story F. Musgrave, Thomas J. Hennan, and Mario Runco deployed the third Defense Support Program (DSP) missile warning satellite.

Without going into too much detail, DSP satellites stare at the earth, looking for the infrared signatures of rocket exhaust that would indicate ballistic missile launches.

Which, if nothing else, perhaps we can all be thankful for eyes in the sky that are watching out for sneak attacks.

___
*Philippians chapter 4.

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Free-Flying Space Experiments

Fifteen years ago today — November 19, 1996 — the Space Shuttle Columbia launched from Kennedy Space Center carrying a spacecraft with a really long acronym.


(STS-80 launch. NASA image.)

Mission STS-80 carried the “Orbiting and Retrievable Far and Extreme Ultraviolet Spectrograph-Shuttle Pallet Satellite II,” known also as ORFEUS-SPAS II, a free-flying research spacecraft built in Germany. It also carried the Wake Shield Facility on its third flight. Both free-flying payloads were deployed, completed their experiments, and were retrieved without incident.

Astronauts Kenneth D. Cockrell, Kent V. Rominger, Tamara E. Jernigan, Thomas D. Jones, and F. Story Musgrave spent 17 days in space, carrying out all the planned experiments except for two spacewalks that were cancelled because of a problem with the shuttle’s hatch.

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Second Shuttle Shakedown

Thirty years ago today — November 12, 1981 — astronauts Joe H. Engle and Richard H. Truly launched aboard the Space Shuttle Columbia.


(STS-2 launch. NASA image.)

Mission STS-2 began at 10:10 a.m. EST at Kennedy Space Center, and ended a little over 48 hours later — having been cut short by three days — when Engle and Truly landed at Edwards Air Force Base. Mission controllers ended the flight early because one of the shuttle’s fuel cells failed, reducing the amount of electricity and fresh water available; nevertheless, the crew achieved most of the mission objectives.

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