Archive for the ‘Space’ Category

Google Earth, Insurgents’ Friend?

Saturday, January 13th, 2007

Insurgents in Iraq have been smart extremely smart about using the Net — from YouTube propaganda to anonymous webmail communications to uploaded training guides to t-shirts sold online. So it’s not surprising to hear that that might be using Google Earth for overhead reconnaissance, too.

Still, I have a feeling this story, from the Telegraph, is a little over-blown.

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Terrorists attacking British bases in Basra are using aerial footage displayed by the Google Earth internet tool to pinpoint their attacks, say Army intelligence sources.

Documents seized during raids on the homes of insurgents last week uncovered print-outs from photographs taken from Google.

The satellite photographs show in detail the buildings inside the bases and vulnerable areas such as tented accommodation, lavatory blocks and where lightly armoured Land Rovers are parked.

Written on the back of one set of photographs taken of the Shatt al Arab Hotel, headquarters for the 1,000 men of the Staffordshire Regiment battle group, officers found the camp’s precise longitude and latitude.

“This is evidence as far as we are concerned for planning terrorist attacks,” said an intelligence officer with the Royal Green Jackets battle group. “Who would otherwise have Google Earth imagery of one of our bases?… We believe they use Google Earth to identify the most vulnerable areas such as tents.”

As the paper notes, “it is unclear how old the maps are.” But unless they’re very recent, it’s hard to believe they’d show today’s tents all that accurately.

Anyway, it is amazing the kooky stuff you can find on Google Earth. Last year, Defense Tech readers went buck-wild, discovering everything from Area 51 landing strips to target ranges to a 500-foot-wide Star of David shape, scratched out of the Nevada rock.

Axe Meets the Space Marines

Tuesday, December 19th, 2006

Axe is in Lebanon. So he’s not around to give his Pop Sci cover story, “Semper Fly,” a proper shout-out. Allow me.

spacemarines_ss_1.jpgThe Marines have typically been the American military’s emergency fighter, its “911 force,” the guys you want to get to a trouble zone, ASAP. But these days, getting overflight rights and managing logistics right can slow things to a crawl. So a bunch of waaaay out-of-the-box-thinkin’ Marines have come up with an almost insanely ambitious new plan: send squads through space, instead. The concept is called “Small Unit Space Transport and Insertion,” or SUSTAIN.

Each Sustain lander is intended to hold a squad of 13 Marines. Mounted on wedge-shaped carrier aircraft, the lander would detach, climb, and accelerate with scramjet engines to 100,000 feet and then fire rocket engines to get above 50 miles, following an arc over hostile countries. Composite shields would absorb or deflect the searing heat of reentry as the vehicles angle for the landing zone.

Lafontant arrived at this Space Marines vision after years of analyzing military space needs. A 44-year-old Queens, New York, native who joined the Corps in 1984 as an infantry officer and progressed through Naval Postgraduate School in Monterey, California, where he studied space systems operations and joined the small fraternity of Marine Space Operations Officers. In 2001 he took a job in the Pentagon working for the National Reconnaissance Office. He was serving as liaison to the Joint Chiefs of Staff in November 2001 when the Marine Corps launched its deepest air assault ever.

Five hundred Marines from the 15th Marine Expeditionary Unit prepared to fly 441 miles through the mountains of northern Pakistan in CH-53E Sea Stallion helicopters to capture an airstrip near Kandahar, Afghanistan. It was to be the beginning of the first large offensive against the Taliban and Al Qaeda. If all went well, the Marines expected to walk away with Osama bin Laden.

But political considerations sabotaged the mission. For weeks, the Marines had bobbed on the Indian Ocean aboard two assault ships while State Department officials negotiated with Pakistan for the right to fly through the country’s airspace. Pakistan granted access only after winning economic and military concessions that, some say, have reinforced a repressive regime. When U.S. troops finally touched down on November 25, bin Laden’s trail was cold. “We ended up selling our soul to the devil to get through,” Lafontant says. He grew determined to find a way around that sort of diplomatic entanglement. “What if we don’t have to have anybody’s permission?” he asked himself. “What if we just go above and drop in?”

Now, David just loves this idea. But he knows it’s pretty damn far-fetched. He does a good job at laying out the obstacles to making SUSTAIN happen. Not just the extremely high technical hurdles; the Marines’ total and utter lack of funds for the project, too. He warps up his story on a balanced note:

Whether or not Sustain ever makes it past the concept stage, it’s clear that military planners are looking to increase the mobility of American forces. A Marine space transport — one that would reduce politically charged bureaucratic delays and the potential for mission snafus — might sound impossible, but to Lafontant and others entrusted with imagining the future of war, it is simply the next logical step.

Air Force’s D.I.Y. Satellite Hackers

Wednesday, December 13th, 2006

The Bush administration is warning about “threats by terrorist groups and other nations against U.S. commercial and military satellites,” the AP reports.

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“A number of countries are exploring and acquiring capabilities to counter, attack, and defeat U.S. space systems,” Undersecretary of State Robert G. Joseph… the senior arms control official at the State Department… said.

…He said terrorists and enemy states might view the U.S. space program as “a highly lucrative target,” while sophisticated technologies could improve their ability to interfere with U.S. space systems and services.

Joseph did not identify terror groups or nations that might have such motives.

Nor, apparently, did Joseph mention that the Air Force already has a team of satellite-attackers in place, who’s job is to replicate terror strikes — using nothing but gadgets they can pick up at Radio Shack. My Popular Mechanics article explains:

Three or four times a year, small groups of junior officers gather at an Air Force Research Laboratory facility in New Mexico and try to figure out how to take down an American satellite using nothing more than sweet talk and off-the-shelf gear.

The U.S. military relies on satellites to relay orders, guide precision bombs and direct flying drones. But those multibillion-dollar systems can be surprisingly vulnerable to the simplest of attacks. So, it’s up to the members of the Space Countermeasures Hands On Program — Space CHOP, for short — to find those weaknesses before enemies have a chance to crack them.

Space CHOP was formed in 1999, and one of its earliest experiments used a UHF generator and a small amplifier purchased from an electronics store. The team pieced together an antenna out of copper wire, PVC piping and other easily obtained materials. (The Air Force won’t elaborate on Space CHOP hardware or targets.) By aiming the antenna at the sky and turning on just a few milliwatts of power, the team showed it could block signals from a military communications satellite.

“We demonstrated that a few unsophisticated guys with a few thousand dollars’ worth of equipment could interfere with a seriously sophisticated satellite system,” says John Holbrook, Space CHOP’s program manager. “If we had turned on full power, we would’ve knocked [the system] out.”

More often than not, the Space CHOP team doesn’t need any equipment to uncover a vulnerability. They scour the Internet for potentially damaging information. They case out Air Force bases. Or, posing as graduate students, they pump defense contractors and military officers for information until they’ve figured out a way to take down a satellite or its link on the ground.

The military also has personnel known as “red teams” — full-time mock adversaries who specialize in cyberattacks — Holbrook notes. But his team of outsiders often finds vulnerabilities that the red teams miss. “We’re experts in not being experts,” Holbrook says with a laugh.

Will We Finally Get Our Moon Base?

Tuesday, December 5th, 2006

A couple of months ago, I made a snide remark about those who advocate “pulling out of the Outer Space Treaty, which prohibits [military] installations on the moon among other things.”

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“Not that we have a plan for a [military] moon-base, but we might—you know?”

Right. So, nearly three years after President Bush ordered NASA scientists to plan for a manned “foothold on the moon,” we may be getting that moon base—albeit a civilian one:

NASA’s Lunar Architecture Team, chartered in May 2006, concluded that the most advantageous approach is to develop a solar-powered lunar base and to locate it near one of the poles of the moon. With such an outpost, NASA can learn to use the moon’s natural resources to live off the land, make preparations for a journey to Mars, conduct a wide range of scientific investigations and encourage international participation.

“The architecture work has resulted in an understanding of what is required to implement and enable critical exploration objectives,” said Doug Cooke, deputy associate administrator, Exploration Systems Directorate. “This is all important as we continue the process we have begun and better define the architecture and our various exploration roles in what is a very exciting future for the United States and the world.”

As currently envisioned, an incremental buildup would begin with four-person crews making several seven-day visits to the moon until their power supplies, rovers and living quarters are operational. The first mission would begin by 2020. These would be followed by 180-day missions to prepare for journeys to Mars.

The proposed lunar architecture calls for robotic precursor missions designed to support the human mission. These precursors include landing site reconnaissance, natural resource assays and technology risk reduction for the human lander.

[Read more at the NASA website.]

Anyway, the announcement contains nothing to suggests that the notional moon-base would be a military installation or in any way incompatible with the Outer Space Treaty.

But it did remind me of Cold War studies for lunar military installations. For a history of crazy military moonbase ideas, Jeff Richelson’s “Shooting for the Moon” in the Bulletin of Atomic Scientists is a great place to start.

Jeffrey Lewis, cross-posted from Arms Control Wonk.com

“Deadlies” Nominee: Inflatable Space Pod

Monday, November 20th, 2006

Nominated by Richard R.

The Deadlies,” our contest to find the most insanely-dangerous gear of all time, is well under way. A bunch of folks have already posted their nominees. They’re all brilliant. Take MOOSE (“Man Out of Space Easiest”), General Electric’s one-man, orbital escape pod from the 1960’s.

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To use it, an astronaut first would don a spacesuit and remove the 200-pound packaged escape system from a large suitcase-sized container aboard the spacecraft.

Then the person would unfold a 6-foot-long bag made of clear Mylar plastic and step into one end of it.

Attached and bonded to the rear of the bag was an ablative heat shield about one-quarter inch (6.3 millimeters) thick. Inside the bag were two canisters of white polyurethane foam, a portable rocket motor with twin exhaust nozzles that protruded through the Mylar cover, a parachute, radio equipment and a survival kit.

Once inside the bag, the astronaut would don a harness, zip the bag closed and float out the hatch of the spacecraft.

Out in space the astronaut would activate the foam canisters, which would inflate the bag into the shape of a blunt cone within a few minutes.

Then the astronaut would orient the bag with the rocket motor so that the blunt end faced towards Earth. That way, atmospheric heat upon reentry would char only the heat shield.

Riiiiight. As Space.com observes, “corporate brochures touting MOOSE did not focus on the question of whether a person could withstand the mental and physiological shock of an untethered jump into space and a free fall of hundreds of miles (kilometers) back to Earth.”

Perhaps the engineers gained confidence from U.S. Air Force Capt. Joe Kittinger who made a couple of towering leaps from open-balloon gondolas during the late 1950s and early 1960s.

In one high-altitude test in August 1960, Kittinger jumped from a height of nearly 103,000 feet (31,395 meters) and free fell for more than four and a half minutes before his parachute opened. Kittinger even surpassed the speed of sound – the only human to do so without using an aircraft or space vehicle — yet survived his 20-mile (32-kilometer) fall in remarkably good shape.

The reasoning followed that if one man survived such a drop, then others could as well from even higher altitudes.

Got a “Deadlies” candidate? Speak up!

Falcon Fills Blackbird’s Shoes

Wednesday, October 18th, 2006

A decade after the final retirement of Lockheed Martin’s Mach-3 SR-71 Blackbird spy plane, the Air Force is preparing to test a plane that flies more than three times as fast. Two Falcon Hypersonic Test Vehicles, built by Lockheed Martin with input from NASA and the Defense Advanced Research Projects Agency (Darpa), will take to the air in 2008. The $100-million program aims to field a Mach-10 unmanned aircraft that can spy on foreign powers, drop bombs or even lob satellites into orbit.

Carter concept 2.jpgThe Blackbird, which was first retired in 1990 then briefly resurrected between 1995 and 1997, reached its Mach-3 top speed by way of its hybrid Pratt & Whitney J-58 engines, which featured a conventional turbojet engine installed inside a ramjet optimized for supersonic flight. At low speeds, the turbojet did most of the work; at high speed the turbojet throttled back and the ramjet took over.

Engineers are improving on this so-called “combined cycle” to propel the Falcon, using a more powerful “scramjet” in place of the ramjet. “We need propulsion that transitions seamlessly from Mach 0 to Mach 9 or 10,” says Lockheed Martin’s Bob Baumgartner.

“For low speed, we’re looking at turbine engines that can perform at speeds from Mach 0 to Mach 4, then a scramjet … that takes over anywhere between Mach 2 and Mach 4 and goes up to higher Mach numbers — depending on the fuel, up to Mach 10,” says Steven Walker, a Darpa researcher. “For sure, we know how turbines work, but we don’t have turbines that work at Mach 4.”

“The scramjets are still at a low-technology readiness level,” he adds. “Combining both flow-paths and looking at how you transition from one to the other and the transition back … that’s all new, break-through technology.”

“Thermal protection … is the next major enabling technology,” Baumgartner says, referring to ways of coping with the high temperatures that Mach-10 flight generates. “We’re looking at durable metallic thermal protection panels to withstand heat and keep it away from structure. We’re also looking at ceramic panels.”

Foil insulation is an option too, he continues. And for the engines, developers are looking at new ceramic or metal-alloy coatings that can withstand temperatures reaching thousands of degrees.

Lockheed Martin’s Craig Johnston, who works on a hypersonic engine project, sees many applications for Falcon and similar vehicles. “I can easily envision this technology eventually making its way into advanced aircraft … something like long-range strike aircraft, supersonic bombers or future fighters.”

Darpa also foresees using Falcon to cheaply launch small satellites. “Falcon will develop a low cost, responsive Small Launch Vehicle that can be launched for $5 million or less,” an agency statement reads. “The SLV will be capable of launching small satellites into sun-synchronous orbits and will provide the nation a new, small-payload access to space capability.”

David Axe

New Space Policy? No Way!

Wednesday, October 18th, 2006

I’m sure a bazillion bloggers are going to squeal in paranoia about this Washington Post story, on the Bush Administration’s new space policy. But, of course, they could have been squealing a full week earlier, if they had just read Defense Tech first.

SBR.jpgThanks to Haninah Levine and Theresa Hitchens, this site was on top of the more martial space plan on October 11th. Other elements of the story — the Air Force’s “Counterspace Operations Doctrine,” the Chinese laser supposedly that’s targeting U.S. satellites — have all been addressed here, too. A long time ago.

And so, with that, I’m ushering in a new category: “Eat DT’s Dust” — stories that the mainstream press takes up, long after this site has dealt with ‘em. I’m posthumously inducting Jeffrey Lewis’ post, “NORK Nuclear Test: It’s A Dud,” into the club, too. The Wonk beat all the big papers to the now-universal conclusion.

There are plenty of times, of course, when Defense Tech just points to, or comments on, stories that have been broken by outlets like the Times, the Post, or ABC News. But when it’s the reverse — well, I figure we ought to strut our stuff just a little bit more.

Nuke Spaceship Docs Revealed

Wednesday, October 18th, 2006

orion_arabic.jpgIn the late 1950’s, the U.S. government began research into an interplanterary spacecraft that relied on nuclear detonations for propulsion. The effort, dubbed “Project Orion,” died quietly ater a few years. But many of the documents surrounding the atomic spaceship have remained hidden or classified for more than four decades.

Boing Boing has a bunch of ‘em up, now — as well as an interview with tech historian George Dyson, who’s dad worked on Orion. Check it out.

UPDATE 11:15 AM: “Orion is interesting from a military technology point of view, partly because it was literally a ’space battleship’ with a large stock of nuclear warheads it could deliver anywhere on the planet,” says David Hambling. “In particular, there is a program mentioned in [Dyson's] book called ‘Casaba Howitzer’ which is a nuke with highly directional blast, suitable for attacking buried installations etc. Casaba Howitzer is still, as far as I know, highly classified with no details anywhere.”

Bush: Space is for Soldiers

Wednesday, October 11th, 2006

After four years and some 35 drafts, the Bush White House has finally released its long-awaited rewrite of the U.S. National Space Policy. Obviously, the administration was keen to get the word out – they quietly posted a 10-page unclassified summary on the Office of Science and Technology Policy’s website at 5 pm on Oct. 6 – the Friday before the Columbus Day long weekend.

fc-03.jpgHmm. Maybe not.

When asked about the document, White House Press Secretary Tony Snow replied: “What, this old thing? Just something we inherited from our Uncle Bill.” Well, not literally, of course. But in a further indication that the administration intends to downplay the significance of the document, insiders have been characterizing the new NSP as “nothing new,” just a variation on the themes set by the Clinton administration in the last NSP.

A cursory reading might support that conclusion – much of the language from the previous policy is lifted intact. But giving such an important document just a cursory reading would be a mistake. Slap down the new NSP, signed by President Bush on Aug. 31, and the old one, signed by President Clinton in 1996, side by side, and reach deep down for those old grad-school “textual analysis” skills, and it’s quickly apparent that we are dealing with two very different beasts. Though that won’t come as a surprise to those who have been playing the space game over the past decade or so.

While the Clinton version focuses on civil and commercial space, the Bush NSP gives primacy to national security and military space. Example: of Clinton’s five goals for U.S. space programs, two mention national security; of Bush’s six goals, four are related to national security and defense.

While the Clinton policy aimed to highlight international cooperation and collective security in space, the Bush NSP takes a go–it-alone stance, using strong language that asserts U.S. unilateral rights in space while possibly also being intended to “negate” the rights of other space-faring nations. In ominous tones, the document threatens in one section to “dissuade or deter others from either impeding [U.S.] rights or developing capabilities intended to do so” – raising the specter of preemptive action against other nations’ dual-use space technology.

Indeed, even as the Bush policy emphasizes the importance of space security, it goes out of its way to make clear that this security may not, under any circumstances, come from (shudder) international law: “The United States will oppose the development of new legal regimes or other restrictions that seek to prohibit or limit U.S. access to or use of space. Proposed arms control agreements or restrictions must not impair the rights of the United States to conduce research, development, testing and operations or other activities in space for U.S. national interests” [emphasis added].

While the new NSP doesn’t go as far as some space hawks wanted it to in openly endorsing the strategy of fighting “in, from and through” space, neither has it served to put a blanket – even a thin one – on those ambitions. And in taking a decidedly “us against them” tone, it is likely to further cement the view from abroad that the United States has taken on the role of a “Lone Space Cowboy.” And as much as people love John Wayne movies overseas, that will not be a good thing.

Theresa Hitchens and Haninah Levine

Chinese Laser vs. U.S. Sats?

Monday, September 25th, 2006

China has fired high-power lasers at U.S. spy satellites flying over its territory in… a test of Chinese ability to blind the spacecraft,” Defense News is reporting. And, at least in theory, those lasers might be able temporarily take offline America’s most powerful orbiting spies, like the giant electro-optical Keyhole spacecraft or radar-based satellites like the Lacrosse.

starfire-optical-range-laser3.jpgNow, the article is a little short on details. “It remains unclear how many times the ground-based laser was tested against U.S. spacecraft or whether it was successful,” the story says.

And there’s a touch of hyperbole in the piece. According to the article, a recent Pentagon report “acknowledge[d] China has the ability to blind U.S. satellites, thanks to a powerful ground-based laser.” That’s not exactly right. What the report actually says isn’t quite so definitive:

Evidence exists that China is improving its situational awareness in space, which will give it the ability to track and identify most satellites. Such capability will allow for the deconfliction of Chinese satellites, and would also be required for offensive actions. At least one of the satellite attack systems appears to be a groundbased laser designed to damage or blind imaging satellites.

Nevertheless, citing unnamed “top officials,” the trade journal asserts that “China not only has the [anti-satellite] capability, but has exercised it. It is not clear when China first used lasers to attack American satellites. Sources would only say that there have been several tests over the past several years.”

Within the U.S. military, there’s a contingent that’s been worried for years about China arming up like this. The other day, I was talking to an Air Force colonel, about the Pentagon’s plans for “prompt global strike” — the ability to launch, in a matter of hours, a bolt-from-the-blue attack against an enemy thousands and thousands of miles away. Some in the armed forces talk about the strikes as a way to take out an Iranian nuclear facility, a terrorist chieftain, or a North Korean missile on the launchpad. But this colonel had a different target in mind for the instant attack: a Chinese “anti-satellite, ground-based laser wreak[ing] havoc with our constellation.”

If China really is pursuing such a weapon, it wouldn’t be the only country looking at lasers to interfere with enemy eyes above the sky. In a 1997 test, the U.S. fired a chemical laser at a satellite orbiting 420 kilometers above the Earth. The “laser apparently had technical difficulties,” according to the Union of Concerned Scientists, “but the results of the test were startling.”

A lower-power (30-watt) laser intended for alignment of the system and tracking of the satellite was the primary laser source used during the test, and it appeared that this lower-power laser was sufficiently powerful itself to blind the satellite temporarily, although it could not destroy the sensor.

These days, the Air Force’s Starfire Optical Range is shooting lasers in the sky, trying to figure out how best to correct for atmospheric interference. Astronomers looking into the heavens will be the most immediate beneficiaries. But Starfire could help out anti-satellite weaponeers, too. These days, ground-based lasers aren’t powerful enough — or good enough at traveling through the air — to permanently take out a satellite; the best the beams might be able to do is blind the thing, temporarily. That could change, if Starfire (or its Chinese equivalent) does its job right.

UPDATE 10:12 AM: Color Theresea Hitchens, the Center for Defense Information’s resident spacewar guru, “not convinced – nor impressed.”

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