I'm just fascinated by this stuff According to a report today, DARPA plans to flight test two hypersonic demonstrator vehicles beginning in 2009.
There's been a lot of talk about hypersonics and what the flight regime can and can't do for civilian and military applications. And finally there's going to be some proof in the putting. It'll be interesting to see the dynamic effects of such speeds and whether the science is there to build hypersonic planes and missiles.
From Flight Daily News:
Details have emerged of the US Defense Advanced Research Projects Agency's (DARPA) plans to test fly its two expendable dart-shaped Hypersonic Technology Vehicle (HTV)-2 demonstrators.
To be launched by Orbital Sciences Minotaur solid-fuel rockets from Vandenberg Air Force Base, HTV-2a will fly in May 2009 and HTV-2b will follow in the October of that year.
While the two flights have separate trajectories they will both impact near the Kwajalein Atoll test site in the Pacific Ocean. HTV-1 was a ground test demonstrator.
The first flight will demonstrate performance characteristics, and the second cross-range manoeuvring as well as thermal protection system performance.
The two HTVs will use inertial navigational measurement units and global positioning system (GPS) for guidance, while testing satellite communications and GPS reception through the plasma that will surround the vehicles during their flight.
"The HTV-2 will have a plasma probe onboard [to examine the hot gases] and we are expecting it to have good lift-over-drag performance," said DARPA's tactical technology office deputy director Steve Walker, speaking at the 15th AIAA International space planes, hypersonic systems and technologies conference in Dayton, Ohio on 28 April.
The article also mentions another flight demonstrator that will demonstrate some radical flight characteristics:
The next flight demonstrator after HTV-2 will be Blackswift. Lockheed Martin and Pratt & Whitney Rocketdyne were working on a waverider type vehicle called the HTV-3 but there are no plans to build this and the concept has been designated HTV-3X.
Blackswift is a reusable hypersonic demonstrator and the prime contractor for its construction and flight test is yet to be selected.
Should be an exciting year for exotic flight regimes.
(Gouge: NC)
-- Christian
When my air conditioning broke in mid-July I was very nervous about the repair costs, but I remember that my real estate agent purchased a home warranty for my home. I called Nationwide Home Warranty and within a few hours my a/c was fixed for only a service call fee. My realtor really helped me out.
Most of the Pentagon's weapon systems cost much more than they should, are built much more slowly than they could be and the entire system needs fundamental reform.
Those were the conclusions of most lawmakers and one senior defense acquisition expert at a hearing of the House Oversight and Government Reform Committee in Washington earlier this week.
Perhaps most damning, senior staff member Michael Sullivan from the Government Accountability Office told lawmakers that the system had not really been any better or worse when he started investigating defense procurement in 1986, though he conceded there were some recent small signs of improvement.
The hearing's poster child for botched Pentagon buying was a $13.2 billion Marine Corps program called the Expeditionary Fighting Vehicle. The program for the updated AAV started in 1996 when the Marines issued a contract to General Dynamics. Initially, the program won plaudits for its innovative management and it passed through the program definition and risk reduction phase in mid-2001. Then things began to fall apart. The Marines issued a contract for the next phase of the program which was supposed to cost $712 million but quickly rose by the end of 2006 to an estimated $1.2 billion.
The modernized amtrac, according to a report prepared for the Oversight Committee's chairman, Rep. Henry Waxman (D-Calif.), weighed too much to carry combat-ready Marines and still go as fast as it should. It operated only four-and-half hours before requiring major maintenance instead of the planned 47 hours. It was so loud that Marines could not speak to each other and had to wear ear plugs.
Originally, the Pentagon planned to buy 1,025 Expeditionary Fighting Vehicles for $8.4 billion. Now the military plans to buy 593 for $13.2 billion. Costs per vehicle, according to the committee's report, have increased 168 percent and production has slipped eight years.
But the Marines' EFV was certainly not alone in being a botched acquisition, Sullivan told the committee. His testimony noted that not one of the 72 weapons programs his office reviewed used "the best practices standards for mature technologies, stable design and mature production processesÂ…" He told the committee that "acquisition problems will likely persist until DoD provides a better foundation for buying the right things, the right way." Right now, the military promises it can do too much, and underestimates how much weapons will cost.
The stakes are enormous. The Defense Department plans to spend $900 billion over the next five years on developing and buying weapons. Current programs are usually 21 months late in getting initial capabilities to the soldiers, Marines and airmen who need them. That is five months later than an analysis done in 2000 indicated, according to Sullivan's prepared testimony. Almost 45 percent of the Pentagon's major acquisition programs are paying more than 25 percent more per system than originally planned, compared to 37 percent of programs in 2000.
The biggest problems Sullivan found in his examination of defense spending were: requirements that grew and grew and grew; turnover of program managers that raised issues of "continuity and accountability;" too much responsibility in the hands of companies for work that used to be done by government officials; and difficulty overseeing the increasingly complex job of software development.
The two Pentagon officials at the hearing conceded there was room for improvement but insisted the system is not broken and is actually beginning to improve.
James Finley, deputy undersecretary of Defense for acquisition and technology, said that when he underwent Senate confirmation many people believed the process was broken. After his first 90 days in office he concluded they were wrong. "We needed to add discipline to the process and ensure that the basic blocking and tackling in executing the acquisition process was done correctly," he testified.
Senior Pentagon leaders developed a three-year plan and is 26 months into implementing that plan. It includes greater focus on the beginning of a program to make sure prototypes are used to get a better handle on performance, cost, how to build the system and how long it will take to build, Finley said. The Pentagon has cut the paperwork for reviews by half and has standardized red, yellow and green indicators for cost, schedule and performance. There is greater focus on program stability - keeping funding steady and limiting turnover of key personnel -- and the Pentagon created earned value management system "trip wires" to help identify problems on a monthly basis, Finley said.
-- Colin Clark
In a sharp break for a military with long experience wielding the battle-tested AK-47, the Afghan national army is set to replace its entire inventory of Kalashnikov rifles with the American-made M-16.
By the end of the year, the U.S. military plans to ship about 55,000 used Marine Corps M-16A2 rifles to Afghanistan with the intent of outfitting every soldier in the Afghan army with one by the late spring of 2009. So far about 6,000 M16s, including Canadian C-7 variants, have been fielded to Afghan units and about 6,000 M-4 carbines have been in the hands of Afghan commandos since May 2007.
Officials in charge of the $44 million modernization effort recognize the difficultly in transitioning a largely illiterate force from a weapon designed for the third world to one that requires intensive maintenance and marksmanship. But the new, more accurate weapons are already proving their worth on the battlefield.
"When the commandos go into a fight against an enemy that's armed with AKs, it's not a fair fight. And even fire against 'spray and slay,' it's not a fair fight at all," said Army Lt. Col. Mike McMahon, who heads up the modernization program for the Afghan army.
"The competence you get [from the M-16] and the confidence is just incredible."
The effort to abandon decades of experience with the venerable Kalashnikov is in part an attempt by Kabul to make a symbolic break from its insurgent past, where genocidal battles with AK-47-toting Soviets and Taliban religious zealots weigh heavily on the memory of Afghanistan's post-September 11 government, McMahon said.
Similar efforts are in the works to supply the new Iraqi army with M-16s as well.
But the enhanced performance and increased assurance gained by wielding the M-16 and its variants come at a cost. Early efforts to train the Afghan army on the M-16 have been mixed, with some soldiers sticking to their trigger-happy ways -- firing triple the amount of ammunition that a typical U.S. trainee would -- and others using diesel fuel to lube the finely-tuned carbine as if it were an AK.
"The Afghans called this the 'Black Kalashnikov' -- it was nothing different than just a plastic weapon," McMahon explained. "They figured out very quickly -- after they went through zeroing -- that it was way different than the Kalashnikov, and you didn't fire all your rounds at the same time."
The M-16s do take some getting used to, McMahon said, and some long-standing habits have to be broken. For one, Afghan troops can't just pick up any M-16 and fire it with any hope of hitting what they're aiming at. Each soldier has his individual weapon zeroed to his particular shooting style and is accountable for that weapon's whereabouts.
And no more ripping off a 30-round magazine shooting from the hip, McMahon said. The M-16 is designed to be fired from the shoulder, so forget the "spray and slay" shooting style.
Initial training on the M-16 with the 205th Afghan Army Corps in January was mixed, mainly because there were too few instructors with deep enough range and marksmanship know-how to get the students up to speed. So a new program has been launched along the lines of the M-16 training regimen in Iraq to hire six teams of 12 civilian contract instructors who will teach Afghan non-commissioned officers how to use the new rifle.
In a classic "train the trainer" model, those NCOs will then be in charge of teaching Afghan grunts on the M-16, giving small unit leaders the added benefit of perfecting both their rifle and management skills.
"We see a huge secondary benefit in terms of development of the NCO corps by doing this; in teaching them how to train, how to run ranges and how to teach" other soldiers, McMahon said. "Also this gives them a system that will have a devastating impact on the enemy in terms of almost revolutionizing the army."
-- Christian
The Air Force received the last in a series of GPS IIR(M) satellites from Lockheed Martin during an recent fly-out ceremony at the Lockheed Martin facility in Valley Forge, Penn.
May 2 marks 20 years since the last B-1B Lancer was delivered to the Air Force, and today commanders consider it one of the most valuable aircraft in Iraq.