Tuesday, August 9, 2011

LCSs Sail Through Trials, Tackle Challenges

Launching and recovering small boats. Checking performance in high sea states. Testing firing procedures. Measuring fuel use to find the best speeds to operate the ships. Comparing simulated training with the real thing. Figuring out whether 40 people really can operate a state-of-the-art small combat ship. Fixing what doesn't work.
The U.S. Navy's Littoral Combat Ships, including the Freedom, are being tested as the program is debated in Washington. (U.S. Navy)
That's just the beginning of the list of what the crews of the U.S. Navy's new Littoral Combat Ships (LCS) have been up to over the past year or so. While the program's future continues to be debated in Washington, the Navy and its industrial partners are testing out the first two ships and their complex mission modules. Problems are identified and addressed, and if need be, fixes are made on the in-service ships and design changes drawn up for follow-on ships.
"All designs evolve," said Joe North, the director of Lockheed Martin's LCS program. "Nobody gets everything right the first time around."
In general, however, the Navy seems pleased with its first two LCSs, the Freedom (LCS 1), delivered by a contractor team headed by Lockheed Martin, and the Independence (LCS 2), from a General Dynamics-Austal USA effort.
"It's a good program, in good shape," Adm. Jonathan Greenert, soon to be the new chief of naval operations, said July 28. "Now we need to refine it."
A myriad of items and procedures need to be tested, validated, certified. The ships are filled with new fittings - a situation doubled because there are two unique LCS classes. Each ship introduces a new combat system, has a different propulsion plant, features different mission bay handling systems. New maintenance and support schemes are in place to help the tiny, 40-person core crews keep the ships running.
And tests and trials continue for a variety of vehicles and systems for the mission packages that are the LCS' reason for being.
The development and training efforts are being directed from Naval Sea Systems Command (NAVSEA) in Washington, and the LCS Squadron in San Diego. NAVSEA oversees design and development of the ships, their systems and the mission modules, while the LCSRon is in charge of training and fleet support.
LCS 1
The Freedom, first of the breed, is in a San Diego drydock undergoing a $20 million, four-month overhaul, or "availability." Fixes for several problems are being made on the ship, which will run final contract trials this fall.
A new impressed current cathodic protection (ICCP) system is being fitted to the ship's four water jet tunnels to fix a corrosion problem that caused "minor pitting" in the tunnels, North said. Zinc anodes that were intended to prevent the corrosion problem are being removed, having deteriorated. The same modifications have been made to the Fort Worth (LCS 3) and future ships of the LCS 1 class.
"The ICCP will fix this from ever occurring again," North declared.
Capt. Robert Randall, commodore of the LCSRon in San Diego, said a new coating system will be applied to the water jet intake tunnels.
North noted that the Freedom did not suffer from corrosion on the water jet intakes, a problem that has been widely reported on the Independence, but the original fittings were labor-intensive and expensive. A new design built into the Fort Worth was chosen - a modification, he added, that saved "hundreds of hours" on installation costs.
Another fix will be made to the anchor fitting on the starboard bow. The original design allowed water to come into the anchor compartment when the ship ran at high speeds, causing corrosion. The anchor will be moved to the foredeck, with a new windlass based on the Navy's existing destroyer design.
While in drydock, the ship's hull is being cleaned. The Navy's decision to leave the aluminum superstructure unpainted has not changed, although Lockheed and the Navy are looking at ways to possibly "age" the aluminum.
The metal takes about eight years to fully oxidize, North explained, and will in time change to a dark gray color. No decision has yet been made.
The compressors that provide air to start the ship's gas turbines are being changed. The original compressors had reliability problems, and units similar to those used on the Navy's DDG 51 Arleigh Burke-class destroyers have been installed beginning with LCS 3.
"We expect performance to be a hundred times better than what we saw," North said.
Another change incorporated into LCS 3 will be the addition of 43 metric tons of fuel to expand the ship's range. The Freedom might also get that change in an upcoming yard period.
A new type of water jet will be fitted to the ships beginning with LCS 5, North said, with a more efficient axial flow version of the Ka-Me-Wa water jets.
Changes also will be made on the Freedom to the seals on the aviation hangar's door to eliminate water leaks, and a new mezzanine to store helicopter gear is being built into the forward hangar.
Several changes have been made to the mission bay areas - the heart of the LCS. After the original handling system contractor filed for bankruptcy, a new vendor, Oldenburg, was contracted earlier this year to build the overhead cranes, launching systems, elevators and hatches.
"We overcomplicated" the original system, North admitted. "We probably got a little too complicated in how we thought we needed to do it, with special servo unloaders and stuff like that."
The new system, he said, simplifies the motor designs and controls. The overhead rail system remains, but it is being modified to permit continuous transfer between wet and dry mission bay zones.
The side door that was originally intended to allow the big Remote Minehunting Vehicle (RMV) to be launched and recovered will be smaller starting with LCS 5, North said - a change made because the Navy changed the specifications for the RMV. Since the vehicle now will be moved only through the aft doors, a smaller and lighter side door can be fitted.
One repair that won't be made on LCS 1 will be to the launch ramp in the stern, which was bowed after the big 11-meter rigid hull inflatable boat (RHIB) was stowed on it - contrary, North said, to the manufacturer's specs. Properly operated, the boat should be moved off the ramp for storage.
The ramp is "something we're going to live with" on the Freedom, North said.
But the seal between the ramp and the bottom of the stern doors is being changed. Lockheed and the Navy tried three different seal designs and found them all unsatisfactory.
"We had the whole thing redesigned for Three, and it's a backfit on One," North said.
The Navy is continuing to look for ways to reduce corrosion from the salt environment in the wet mission zone.
"We found that we had equipment mounted in that space that had corrosive material to it. It starts to rust, you've got to worry about it," North explained.
Changes already made or under consideration include moving various items out of the zone, switching to nonrusting composites, and the use of different coatings. The Naval Surface Warfare Center is examining several alternatives.
Permanent repairs to a 6-inch hull crack also will be made to the Freedom while in dry dock.
The Navy and Lockheed said the problem is not with the design, but is a workmanship issue in a particularly difficult area of the hull, in a chine area where different angles come together.
The rest of the chine area on the ship was X-rayed, North said, and no further problems were found.
Lockheed and its Marinette shipyard in Wisconsin have changed the way that area on the ship is built, he said.
"They said it was difficult. Now I know what it is, now we're going to do it different," North added.
The Freedom's aluminum superstructure also suffers from cracks, a condition predicted before the ship was finished in 2008.
At least 14 areas have been found with cracks, North said, and most of those were repaired before the current yard period - "none that we're worried about or are going to limit her in her operation," he said.
Changes have been made in the Fort Worth, North added, that should alleviate the problem.
The ballast tanks added to the Freedom's stern to improve the way the ship sits in the water are built into the hull starting with LCS 3.
"The door arrangement on those has been pushed back," said Capt. Jeff Reidel, NAVSEA's LCS program manager. "It's given some additional room in the bay."
More equipment might be added to the stern area, including a lightweight torpedo decoy system similar to the widely used Nixie system, and a towed variable depth sonar (VDS).
A VDS competition for the anti-submarine warfare module is expected to be take place beginning next year, said Capt. John Ailes, the Mission Module program manager for NAVSEA, with a down-select expected in 2014.
Another change that could be made to the ships is the removal of the fin stabilization system, which could eliminate as much as 28 tons of equipment. Sea tests will determine whether the fins stay or go, North and Reidel said.
Topside, the extra-high frequency satellite antennas originally fitted on LCS 1 have been replaced by super high frequency units, bringing the LCS 1 class into commonality with the LCS 2 design.
One of the more visible changes beginning with LCS 3 is the use of a smaller centerline post in the bridge windows. The wide, triangular metal in the middle of the Freedom's bridge was found to be a distraction. While the post is still necessary for structural reasons, it's been reduced on the Fort Worth and subsequent ships.
After some sea time, a 60-day maintenance period for the Freedom is scheduled to begin Jan. 30 at San Diego, NAVSEA said.
The Fort Worth (LCS 3), launched at Marinette in December, is expected to begin dock trials before the end of August, North said. Builder's sea trials are expected to take place in September on Lake Michigan, with Navy acceptance trials scheduled for November.
Lockheed and Marinette are shooting to deliver the ship in February, North said - six months ahead of the August 2012 contract date. Construction of the Milwaukee (LCS 5) is expected to begin in late summer, he added.
LCS 2
Less information is available on changes made to the Independence. Neither Austal USA, builder of the ship and the prime contractor for the third ship on, nor General Dynamics, which oversaw the first two ships of the LCS 2 class, responded to persistent requests to provide an expert to discuss the ship's current state.
The Navy, in general, also has not matched its public relations efforts on LCS 1 with similar news about the Independence, which has been operating out of the relatively obscure base at Mayport, Fla.
Reidel and Ailes, however, noted the ship has been conducting trials with the RMV and has fully demonstrated its mission bay handling systems, including the twin-boom extensible crane (TBEC) that launches and recovers vehicles out the stern.
"From a mission perspective on LCS 2, the platform has been completed, signed off, sold and operating," Reidel said. "The doors have been tested and operating. All the emergency recovery systems and the reliability fixes have been done and are operating."
The TBEC has been tested at sea, he said. "We were a little bit behind where we wanted to be, but we're in a situation right now where it's full steam ahead. Launch, handling and recovery will no longer hold up our integration testing with the mission packages."
The internal computer networks on both ships are "pretty stable," Reidel said. "The only area [where] we've made changes is some software in the combat systems side. From a network perspective, we've made no changes. Both systems are operating well."
At least for now, one change requested by the crew of the Independence will not be made - the installation of bridge wings to make it easier to navigate the ship in tight spaces.
"It's something we're looking at," Reidel acknowledged. Stealth concerns are not an issue, he explained, since there is no radar cross-section design requirement.
"It's a weight issue," he said, along with concerns about other impacts on the design.
Overall, Reidel said, the LCS effort is in good shape.
"I think that at this point, the program has put itself on pretty stable grounds," he observed.
Later this year, the Independence will shift to Panama City, Fla., to test mine warfare components. Before the end of the year, it is planned to sail through the Panama Canal to transfer to San Diego.
Austal USA is expected to launch the Coronado sometime this year, and began construction of the Jackson in early August.

Saturday, August 6, 2011

31 U.S. Troops Killed in Afghanistan Helo Crash


PULI ALAM, Afghanistan - Thirty-one U.S. special forces died in Afghanistan when the Taliban shot down their helicopter, officials said Aug. 6, the deadliest incident for foreign troops in the decade-long war.
A CHINOOK HELICOPTER crashed in eastern Afghanistan, killing 31 U.S. special-operations troops and seven Afghan commandos. (Peter Parks / AFP via Getty Images)
The death toll was given in a statement from Afghan President Hamid Karzai's office and was not immediately confirmed by the NATO-led International Security Assistance Force (ISAF).
The Americans were killed alongside seven Afghan soldiers during an anti-Taliban operation late Aug. 5 when a rocket fired by the insurgents struck their Chinook helicopter in Wardak province, southwest of the capital Kabul.
"The president of the Islamic Republic of Afghanistan expresses his sympathy and deep condolences to U.S. President Barack Obama and the family of the victims," it said.
The Afghan defense ministry said the local troops who died were also special forces.
Twenty-five of the dead were U.S. Navy SEALs, U.S. television network ABC News reported. The Pentagon declined to comment on the cause or number of deaths.
The strike was by far the worst to hit foreign troops since American and other international forces invaded Afghanistan to oust the Taliban in 2001 in the wake of the Sept. 11 attacks.
The previous biggest death toll saw 16 American soldiers killed in 2005 when a Taliban rocket hit their Chinook in the eastern province of Kunar.
One man who said he witnessed the Aug. 5 crash, Mohammad Saber, told AFP that the helicopter plummeted during a late-night operation in his village.
"At around 10 p.m. last night, we heard helicopters flying over us," he said.
"We were at home. We saw one of the helicopters land on the roof of a house of a Taliban commander, then shooting started.
"The helicopter later took off but soon after taking off it went down and crashed. There were other helicopters flying as well."
Wardak provincial spokesman Shahidullah Shahid said the crash happened in Sayd Abad district during an operation against Taliban insurgents who have been waging war on pro-government forces since being toppled from power in 2001.
"The U.S. chopper that crashed last night was shot down by the Taliban as it was taking off," he said. "A rocket fired by the insurgents hit it and completely destroyed it."
He added that the helicopter had broken into several parts.
The Afghan army commander for the region, General Abdul Razeq, also said the helicopter was "shot down by a rocket fired by the enemy."
A spokesman for ISAF said it would issue a statement "at an appropriate moment."
Taliban spokesman Zabiullah Mujahid said the insurgent group was responsible for shooting down the helicopter, which he said was an American Chinook, and acknowledged that eight insurgents had been killed.
A Western military source speaking on condition of anonymity also confirmed the helicopter type.
Chinooks are widely used by coalition forces in Afghanistan for transporting large numbers of troops and supplies around the war zone.
Elsewhere in eastern Afghanistan on Aug. 6, ISAF said another helicopter made a "precautionary landing" in Khost province, near the border with Pakistan.
A spokesman added that no-one on board was killed and there were no reports of serious injuries. There were no reports of insurgent activity in the area at the time.
The latest deaths take the total number of foreign troops killed in Afghanistan this year to 342, according to an AFP tally based on the independent website iCasualties.org. Of those, 279 were from the United States.
There are currently about 140,000 foreign troops in Afghanistan, around 100,000 of them from the U.S.
Some troop withdrawals have already begun as part of a process which is due to see all foreign combat forces leave the country by the end of 2014, although the Taliban are still waging a bloody insurgency.
U.S. special forces play a key role in the war against the Taliban and other insurgents by hunting down and killing fighters in targeted night raids.
Foreign troop commanders say the east of Afghanistan, close to Pakistan where insurgents have hideouts, will likely increasingly overtake the south as the focus of the war in coming months.

China’s J-10B fighter for Pakistan worries Indian air force



The recent official offer of the Chinese to raise a squadron of its home-grown advanced multi-role, all-weather fighter aircraft J-10B to Pakistan has worried Indian defence experts. 

Pakistan will be the only other country apart from China to have this sophisticated fighter aircraft.

Air Commodore (Retd) Jasjit Singh, director, New Delhi-based Centre for Air Power Studies (CAPS), told DNA“India now not only faces the possibility of a two-front war but has to also deal with a two-front military modernisation programme with China supplying its latest weaponry to Pakistan.”

He said India faces a 10-year window of vulnerability as the Indian Air Force’s (IAF’s) present squadron of 34 is way below the sanctioned strength of 39 squadrons. “It will take 10 years for the IAF to get back to its sanctioned strength of 39 squadrons. While Pakistan at present, with 24 squadrons, is raising its strength rapidly with China’s support,” said Singh, who is also the former director of Institute for Defence Studies and Analysis.

Former Vice Chief of Air Staff, Air Marshal PK Barbora, however, said China’s offering Pakistan a squadron of the J-10s may not threaten India’s air superiority. “China does not have a great record of producing a world-class aircraft. All they do is reverse engineer and manufacture aircraft. Secondly, by raising just one squadron Pakistan may not benefit much,”he said.

However, Pakistani media reports indicate that it is looking at raising two squadrons of the fourth generation aircraft to counter India’s Light Combat Aircraft (LCA) Tejas, which is still under development. Besides, according to US military and defence technology news website, Defense Update, the Chinese designed Joint Fighter (JF)-17 (commonly known as ‘Thunder’) is already under production in Pakistan and is actively being promoted for export in the world market.

Despite his optimism, Air Marshal Barbora warned that the slow pace of India’s defence indigenisation (read LCA Tejas, in particular) is a cause for worry. “We will be adding 300 more Su-30 MKIs; getting 126 medium multi role combat aircraft; and upgrading the Mirage 2000s, Jaguars and the MiG-29s. The same cannot be said of some pathetic status of indigenous programmes like the Light Combat Aircraft, which has been delayed for years now,” he says.

US Defense Department awards $42.3m contract for Pakistan F-16 upgrades



The US Defense Department has awarded Lockheed Martin Aeronautics Company a $42.3 million contract to provide 10 additional upgrade kits for Pakistan’s F-16 aircrafts.

 
The contract has been awarded under the Foreign Military Sales programme.
Lockheed Martin will provide upgradation kits for the Pakistan F-16 A/B Block 15 Aircraft Enhanced Modernisation Programme.
Furthermore, the package includes 18 panel “simuspheres“, logistic support up to 21 months of which 12 months on-site and nine months on-call support will be provided.
Various related hardware and software systems are also included.
However, Pakistan had earlier ordered 50 JF-17 jets from China — Pakistan’s largest aircraft provider — which are due to be delivered in six months, said a statement from the Defense Ministry of Pakistan.
Earlier, in June 2010, US delivered the first batch of Block-52 F-16 Fighting Falcon jets to Pakistan.
Pakistan paid $1.4 billion for the jets and an additional $1.3 billion for the up gradation of its previous fleet of the fighter jets.
Back in Musharraf’s government, in January 2008, former US president George W. Bush scrapped nearly a $500 million deal to supply 18 F-16 jets built by Lockheed Martin Co. to Pakistan.

Navy: UAV Likely Shot Down by Pro-Gadhafi Forces


A Navy unmanned helicopter that crashed over Libya in June was likely shot down by forces loyal to leader Moammar Gadhafi, a Navy spokesman said.
Other details, including what type of weapon brought the aircraft down, were not available.
An investigation revealed no evidence of a mechanical or operator error in the June 21 crash. The MQ-8B Fire Scout unmanned helicopter was likely shot down during an intelligence, surveillance and reconnaissance mission, said 6th Fleet spokesman Lt. Cmdr. Mark Walton.
Investigators were not able to examine the wreckage or the crash site, Walton said.
Shortly after the incident, NATO and U.S. officials said the Fire Scout lost contact with its command center before crashing. Walton acknowledged that communication was lost, but it could have been due to the attack that brought the UAV down.
The Fire Scout, which was operating over Libya's central coast, was the first military hardware lost since NATO took over operations in the African country March 31. While the campaign was led by U.S., British and French forces earlier this year, an Air Force F-15 Strike Eagle crashed. Crew members ejected safely and were rescued.
The Fire Scout was part of a two-aircraft detachment aboard the frigate Halyburton. The two aircraft, which had a special configuration for missions over Libya, took the place of two other Fire Scouts that originally deployed on the frigate and flew 10 to 15 missions over the country. After the loss, the Navy sent over a replacement UAV. Halyburton returned to Naval Station Mayport, Fla., on Wednesday after a seven-month deployment

Japanese Inventor Develops Flying Sphere Drone


TOKYO - A Japanese defense researcher has invented a spherical observation drone that can fly down narrow alleys, hover on the spot, take off vertically and bounce along the ground.
It is powered by a propeller protected by a spherical shield with large openings for airflow, meaning a knock into a wall or a tumble to the ground will not damage it.
About the size of a beach ball and jet black, the remote-controlled Spherical Air Vehicle resembles a tiny Death Star from the "Star Wars" movies but has a more benign purpose - to transmit live images from a video camera.
Research to improve the device is continuing, but its designer says that in the future, it could be used as a formidable pursuit vehicle that can travel above traffic or spy on a target through a window.
Its inventor in pacifist Japan hopes it could also help with non-aggressive operations, such as search and rescue in disaster zones, where it could fly through buildings and even up and down stairways.
"This is the world's first spherical air vehicle," said its developer, Fumiyuki Sato, a research engineer at the Defense Ministry's Technical Research and Development Institute in Tokyo.
The latest model, the seventh prototype, is equipped with a single propeller shielded by the shell with flaps and wings to control its flight. It can zip through the air at up to 37 miles per hour.
Sato said all its components can be found on the Internet or in shops in Tokyo's electronic tech-geek heaven of Akihabara.
The motor at the core is contained by a modified plastic bottle, and the total cost for the parts come to 110,000 yen ($1,400) for the latest model, which weighs just 12.3 ounces and has a diameter of 16.8 inches.
Sato admits that many hurdles remain before the flying sphere can be put to practical use, including adding an autopilot function and finding ways to cope with turbulence and poor weather conditions.
The current model could not, for example, be used at the stricken Fukushima nuclear plant, crippled by the March 11 quake and tsunami, because it can only fly within the field of vision of the controller, he said.
"Even though I can see footage from the mounted camera, it would be very difficult to control this" using the video, Sato said, noting that the drone floats in the air at a very delicate balance and cannot stop quickly.
Nonetheless, Sato sees a range of possible missions for the drone in future.
A more advanced model, he said, could hover above a motorcade for security, or if in pursuit of a fleeing target, "it could go below an electric cable, fly above the next one, and then turn a street corner."

2nd Indian AF Jet Crashes Within a Week


NEW DELHI - The Indian Air Force suffered further fleet depletion with the loss of two aircraft within a week. The latest crash involved a British Jaguar on Aug. 5; a Russian-made MiG-21 went down Aug. 2.
A senior Air Force official said nearly 500 MiG variant aircraft, mostly MiG-21 combat aircraft, have been lost since they were bought from the former Soviet Union. The official attributed nearly 40 percent of the crashes to human error, saying pilot training schedules have been disrupted because there are no advance jet trainers and there is a shortage of basic trainers.
In 2010, 10 Air Force aircraft crashes occurred, including four MiG-27s and two MiG-21s.
The Defence Ministry has contracted with BAE Systems to buy its Hawk advance jet trainers.
All the basic trainers have been grounded for over a year due to technical snags, and the replacements have yet to come in. In June, the Defence Ministry selected the Swiss Pilatus PC-7 to replace its basic trainers. However, no contract has been inked, Defence Ministry sources said. In July 2010, all of the 140 basic trainers, called Deepak trainers, were grounded for technical problems with the engines.
Deepak trainers form Stage 1 of the pilots' training schedule. The Air Force official said that even the Stage 2 trainer, the Kiran, is obsolete and needs replacement. The homemade Intermediate Jet Trainer is three years behind schedule.
"Delays in procurement of trainer aircraft, lack of spares and technical snags are the major reasons for the crash of IAF aircraft," said Bhim Singh, retired Indian Air Force wing commander.