JSF may miss acceleration Goals

The F-35 Lightning II’s transonic acceleration may not meet the requirements originally set forth for the program, a top Lockheed Martin official said.

“Based on the original spec, all three of the airplanes are challenged by that spec,” said Tom Burbage, Lockheed’s program manager for the F-35. “The cross-sectional area of the airplane with the internal weapons bays is quite a bit bigger than the airplanes we’re replacing.”

The sharp rise in wave drag at speeds between Mach 0.8 and Mach 1.2 is one of the most challenging areas for engineers to conquer. And the F-35’s relatively large cross-sectional area means, that as a simple matter of physics, the jet can’t quite match its predecessors.

“We’re dealing with the laws of physics. You have an airplane that’s a certain size, you have a wing that’s a certain size, you have an engine that’s a certain size, and that basically determines your acceleration characteristics,” Burbage said. “I think the biggest question is: are the acceleration characteristics of the airplane operationally suitable?”

A recent report by the Defense Department’s top tester, J. Michael Gilmore, says that the Navy’s F-35C model aircraft, which has larger wing and tail surfaces, is not meeting requirements for acceleration.

The report doesn’t say whether the F-35A and F-35B have hit similar snags.

Richard Aboulafia, an analyst with the Teal Group, Fairfax, Va., said that the revelation was not particularly surprising.

“It’s a strike fighter,” Aboulafia said. “It’s not an interceptor; it’s not an F-22.”

Aboulafia said it was unclear whether additional engine power could boost acceleration in the difficult transonic regime. So far, doubts about the aircraft’s aerodynamic performance haven’t diminished Lockheed’s sales prospects, he said.

The F-35 transonic acceleration specifications were written based on clean-configuration F-16 Fighting Falcon and F/A-18 Hornet fighter, Burbage said.

But unlike the Hornet or the F-16, the F-35 has the same configuration unloaded as it does loaded with weapons and fuel, Burbage said. When an F/A-18 or F-16 is encumbered with weapons, pylons and fuel tanks, those jets are robbed of much of their performance.

“What is different is that this airplane has accelerational characteristics with a combat load that no other airplane has, because we carry a combat load internally,” Burbage said, the F-22 Raptor notwithstanding.

Even fully loaded, the F-35’s performance doesn’t change from its unencumbered configuration, he said.

In the high subsonic range between Mach 0.6 to Mach 0.9 where the majority of air combat occurs, the F-35’s acceleration is better than almost anything flying.

Thus far, Lockheed has not had issues with the plane’s acceleration, Burbage said. There are top level Key Performance Parameters from which lower level detailed engineering specification are derived and Lockheed’s job is to meet as many of those specifications as possible within the laws of physics, he said. Discussions are underway about if those original specifications are relevant given the jet’s acceleration in a combat configuration, Burbage added.

Air Force Lt. Col. Eric Smith, director of operations at the 58th Fighter Squadron at Eglin Air Force Base, Fla., and F-35 test pilot, said that flying the aircraft is a thrilling experience.

“I can’t even explain the adrenaline rush you get when you light the afterburner on that thing,” Smith said. “The acceleration is much better than an F-16.”

But the F-35’s aerodynamic performance is not what makes the jet special, Smith said. The F-35 powerful sensors and data-links and how that information is fused into a single coherent and easy to use display are what will make the jet an effective warplane.

Burbage added that while the F-35 is designed as a supersonic fighter, it’s not optimized for the extremely high supersonic speeds that the Raptor was designed to operate at.

“This is not a supercruising airplane like the F-22,” Burbage said.

U.S. prepared for Hormuz Action

WASHINGTON — The United States is “fully prepared” for any confrontation with Iran over the strategic Strait of Hormuz, but hopes a dispute would be resolved peacefully, Defense Secretary Leon Panetta said Jan. 18.

“We obviously always continue to make preparations to be prepared for any contingency, but we are not making any special steps ... because we’re fully prepared to deal with that situation now,” Panetta told reporters.

Tehran threatened to close the strait — a chokepoint for one-fifth of the world’s traded oil — late last month, in the event of a military strike or severe tightening of international sanctions over its disputed nuclear program.

Washington is beefing up its naval presence in waters just outside the Gulf in response to the threats.

“We have always maintained a very strong presence in that region. We have a Navy fleet located there,” Panetta said.

“We have a military presence in that region ... to make very clear that we were going to do everything possible to help secure the peace in that part of the world.”

The defense chief said Washington has been clear on its effort to prevent Iran from obtaining a nuclear weapon and from closing the Strait of Hormuz.

“Our goal has always been to make very clear that we would hope that any differences that we have, any concerns we have can be peacefully resolved and done through international laws and international rules,” he said.

“We abide by those international laws and international rules. We would hope that Iran would do the same.”

He declined to comment on a report which said Washington had sent a letter to Iran regarding its threatened closure of the waterway, but said “we have channels in which we deal with the Iranians, and we continue to use those channels.”

On Jan. 13, the New York Times, citing unnamed U.S. officials, reported that Washington had used a secret channel to warn Iran’s supreme leader Ayatollah Ali Khamenei that closing the narrow strategic waterway would cross a “red line” and provoke a response.

Panetta said the postponement of joint military exercises with Israel came at the request of his Israeli counterpart, Ehud Barak.

“Minister Barak approached me and indicated that they were interested in postponing the exercise,” he said.

“We looked at it and determined that in order to be able to plan better and to do this so that we would be able to conduct that exercise that it would be better to postpone.”

Israeli officials said on Jan. 16 that the postponement was because of regional tensions and instability, and that the drill will probably take place in the second half of 2012.

The joint maneuver was to have been the biggest yet between the two allies and was seen as an opportunity to display their joint military strength at a time of growing concern about Tehran’s nuclear ambitions.

But it was to come at a time of rising tensions over Iran’s nuclear program, which Israel, Washington and much of the international community believe masks a weapons drive.

Chinese Virus hits DoD access cards

A Chinese-based cyber attack is targeting the U.S. Defense Department’s Common Access Cards with technology that could steal information from military networks while troops and civilians work at their desks, researchers say.

The new cyber weapon apparently can get inside individual computers after users unwittingly open a standard PDF email file. Once embedded, it logs the users’ keystrokes to obtain personal identification numbers or codes associated with that card and user, according to AlienVault, a Silicon Valley-based cyber security firm.

“Basically, they are able to steal the PIN and then they can get access to whatever they want,” said Jaime Blasco, the lab manager for AlienVault who published detailed technical information about the attack.

The attacks are a variant of a virus, or malware, known as “Sykipot” and date back as far as March 2011, Blasco said.

The new Sykipot strain specifically targets the technology used to support the Pentagon’s CAC system and the emails seeking to spread it often are disguised as official military or government communications, Blasco said.

To lure defense workers to open the infected attachment, some of the emails have used information about new drone technology and pictures of unmanned aerial vehicles, he said.

The hackers behind the virus can access military systems only as long as an infected user’s card remains logged into a system.

Pentagon spokeswoman Air Force Lt. Col. April Cunningham declined to comment on the details published by AlienVault.

“We are aware of reports regarding this matter and take these type of reports seriously. However, due to operational security, we are not able to provide further details,” she told Military Times.

Blasco said the virus is linked to a “command and control server” that appears to be based in China; some flaws buried deep in the code revealed Chinese language characters, suggesting that only a Chinese speaker would be able to launch it.

Defending against attacks using this technology is extremely difficult. The best way to keep military networks secure is to train troops and civilian employees not to open any unfamiliar files or email attachments, Blasco said.

Many military officials are eager to begin widespread use of smart phones, tablets and other wireless devices, but cyber security experts caution that such technology can be more vulnerable to cyber attacks.

India and China agree to pursue border issues

NEW DELHI — Six months after resuming military exchanges, India and China have agreed on a mechanism for resolving their long-standing boundary dispute.

The two countries signed a pact to establish a “Working Mechanism for Consultation and Coordination on India-China Border Affairs.” The agreement, signed by India’s ambassador to China, S. Jaishankar, and Chinese Assistant Foreign Minister Liu Zhenmin, was finalized here Jan. 17 at the conclusion of the 15th meeting of the Special Representatives on the boundary question between Indian National Security Adviser Shiv Shankar Menon and Chinese State Councilor Dai Bingguo.

The working mechanism will “study ways and means to conduct and strengthen exchanges and cooperation between military personnel and establishments of the two sides in the border areas,” an Indian Foreign Ministry official said.

“The Working Mechanism will address issues and situations that may arise in the border areas that affect the maintenance of peace and tranquility and will work actively toward maintaining the friendly atmosphere between the two countries,” the agreement states.

Sources in the Indian Defence Ministry said the agreement will basically devise a mechanism to establish better military-to-military contacts, which will help ease tensions at the border. There have been dozens of reported incidents of Chinese troops crossing into Indian territory. The Indian Foreign Ministry has denied most of these reports, but analysts here say New Delhi is simply trying to calm rising emotions over the incidents.

The dispute between India and China involves the longest contested boundary in the world. China claims 92,000 square kilometers of territory that is also claimed by India.

The border is currently defined by a 4,056-kilometer Line of Actual Control (LAC), which is marked neither on the ground nor on mutually accepted maps. Efforts to establish an LAC recognized by both countries have made little headway since the mid-1980s.

Both China and India, which fought a brief war over the boundary dispute in 1962, have been building up their defense forces.

Iraq and Egypt talk to boost military cooperation

CAIRO — Egypt’s military ruler Field Marshal Hussein Tantawi on Jan. 18 held talks with Iraqi Defence Minister Saadun al-Dulaimi on ways of boosting military ties between the two nations, officials said.

Talks centered on “training Iraqi officers and exchanging military expertise,” as well as regional and international efforts to support stability in Iraq, one source said.

The meeting was attended by armed forces chief of staff Lt. Gen. Sami Annan and several members of the ruling Supreme Council of the Armed Forces which took over after president Hosni Mubarak’s ouster last year.

More than 200 people have been killed in Iraq since U.S. forces completed their withdrawal last month from the country.

Since then the country has been in the throes of a festering dispute between the Shiite-led government and ministers from the Sunni-backed Iraqi bloc with analysts warning violence could rise if the row is not contained.

Lockheed Touts Fix for F-35 Fuel Dump

Lockheed Martin has found a way to fix the F-35 Lightning II’s fuel dump system, eliminating a potential fire hazard, a top company official said.

“We expect to have that configuration change back in the test airplane early this year,” said Tom Burbage, Lockheed’s Joint Strike Fighter program manager. “The permanent modification that will go into all the production airplanes will be tested by the second quarter of this year.”

The current test aircraft fleet has an interim solution installed, Burbage said.

In conventional aircraft, fuel can be dumped through a mast that ejects the fluid away from the aircraft’s surfaces. But to keep the F-35 stealthy, the design pumped fuel out forcefully from a valve that is flush with the wing, Burbage said. This design allowed a portion of dumped fuel to move back toward the aircraft’s structure. On the Marine Corps’ F-35B version of the aircraft in particular, the fuel could flow too close to the roll-post ducts, part of the short-takeoff-and-vertical-landing system, and potentially ignite.

The problem came to light in a November report to acting Pentagon procurement czar Frank Kendall compiled by the Defense Department’s top operational tester, J. Michael Gilmore.

"Attack on Iran would be catastrophe " says Russia

MOSCOW — Russia on Jan. 18 said a military strike on Iran would be a “catastrophe” with the severest consequences that risked inflaming existing tensions between Sunni and Shiite Muslims.

Foreign Minister Sergei Lavrov also accused the West of trying to suffocate the Iranian economy and incite popular discontent with new sanctions such as a proposed oil embargo.

“As for the chances of this catastrophe happening, you would have to ask those constantly mentioning it as an option that remains on the table,” Lavrov said when asked about the chances of military action.

Israeli Defense Minister Ehud Barak had earlier said his country was not even close to deciding to attack Iran over its nuclear weapons program and still believed that a military option remained “very far away.”

Lavrov told an annual foreign policy briefing that the chances of war were too dire too contemplate because they would incite intercommunal tensions in the region and flood neighboring countries with Iranian refugees.

“I have no doubt in the fact that it will only add fuel to the fire of the still-simmering Sunni-Shiite conflict. And I do not know where the subsequent chain reaction will end, Lavrov said.

“There will be large flows of refugees from Iran, including to Azerbaijan, and from Azerbaijan to Russia. ... This will not be a walk in the park,” he said of possible military involvement.

Lavrov added that punitive sanctions aimed at winning more transparency from Iran had “exhausted” themselves and only hurt the chances of peace.

“Additional unilateral sanctions against Iran have nothing to do with a desire to ensure the regime’s commitment to nuclear non-proliferation,” Lavrov said. “It is seriously aimed at suffocating the Iranian economy and the well being of its people, probably in the hope of inciting discontent.”

His comments came as European Union diplomats closed in on a July date for a full oil embargo that would suit nations such as Italy with a strong reliance on Iranian supplies.

Lavrov said Russia had evidence that Iran was ready to cooperate closely with inspectors from the United Nations IAEA nuclear watchdog and was preparing for “serious talks” with the West.

He also hinted that Europe and the United States were imposing the measures with the specific purpose of torpedoing new rounds of talks.

Russia has been one of the few world powers to enjoy open access to senior Iranian leaders and on Jan. 18 hosted its Supreme National Security Council deputy chief Ali Bagheri.

The Iranian embassy said Bagheri would hold talks with Lavrov and discuss the option of resuming nuclear negotiations with the five permanent members of the UN Security Council and Germany.

Moscow was also due to receive Iranian Interior Minister Mostafa Mohammad Najjar on Jan. 22 for talks focusing on domestic security issues and drug trafficking.

Tehran’s ambassador to Moscow for his part said he expected Russia’s support to continue because it too was being threatened by the West.

“We expect Russia not to agree to a deal with the West,” Iranian Ambassador Mahmoud Reza Sajjadi told the Interfax news agency.

“If there are (non-Western) countries that want to see Iran become a victim of the West, they must understand that the West will get to them too,” said Sajjadi. “We hope that the Russian government and the Russian people will take note of this.”