Tag Archives: missile defense

War and the Innocent Bystanders

During a visit to Tokyo in 2017, Donald Trump called on Japan to buy “massive” amounts of American weaponry. At the time, North Korea was testing new rockets regularly. For the Japanese government, buying Aegis Ashore, a pricey American missile shield, allayed both concerns. Not all Japanese, however, were happy with the purchase, especially in Araya, a quiet residential neighbourhood of low-slung homes next to the sea in Akita city—and the site of a proposed Aegis base.

Akita City, Japan

Jittery locals fretted about electromagnetic waves from the system’s radar and debris from its rockets. They worried about becoming a target in a conflict, as the city’s oil refineries were during the second world war. “Why, why here?” asks Sasaki Masashi, a retired railway worker and head of a neighbourhood council. “It says: ‘Please attack us’,” complains Sakurada Yuko, another anti-Aegis campaigner. They have collected signatures, harangued officials and voted against the ruling Liberal Democratic Party  which unexpectedly lost a seat in Akita in elections to the upper house of parliament last year.

In June 2020  Akita received unexpected but welcome news: the government declared it was scrapping the $4.2bn purchase of Aegis Ashore. Kono Taro, the defence minister, cited the ballooning cost of ensuring that boosters did not fall on civilian property….

Excerpts from Anti-anti-missile systems, Economist, Aug. 15, 2020

A Hypersonic Death: The Race to Develop Hypersonic Weapons

For decades, the U.S. military—and its adversaries—have coveted missiles that travel at hypersonic speed, generally defined as Mach 5 (5 times the speed of sound) or greater . Intercontinental ballistic missiles (ICBMs) meet that definition when they re-enter the atmosphere from space. But because they arc along a predictable ballistic path, like a bullet, they lack the element of surprise. In contrast, hypersonic weapons such as China’s waverider maneuver aerodynamically, enabling them to dodge defenses and keep an adversary guessing about the target.

The US Department of Defense (DOD) is leading a new charge, pouring more than $1 billion annually into hypersonic research. Competition from ambitious programs in China and Russia is a key motivator. Although hype and secrecy muddy the picture, all three nations appear to have made substantial progress in overcoming key obstacles, such as protecting hypersonic craft from savage frictional heating. Russia recently unveiled a weapon called the Kinzhal, said to reach Mach 10 under its own power, and another called Avangard that is boosted by a rocket to an astonishing Mach 27. China showed off a rocket-boosted hypersonic glide vehicle (HGV) of its own, the Dongfeng-17, in a recent military parade. The United States, meanwhile, is testing several hypersonic weapons. “It’s a race to the Moon sort of thing,” says Iain Boyd, an aerospace engineer at the University of Colorado, Boulder. “National pride is at stake.”

China’s military sees hypersonic weapons (as well as cyberwarfare and electromagnetic pulse strikes) as an “assassin’s mace”: a folklore term for a weapon that gives an advantage against a better-armed foe. If tensions were to spike over Taiwan or the South China Sea, for instance, China might be tempted to launch preemptive strikes with conventional hypersonic weapons that could cripple U.S. forces in the Pacific Ocean.For now, maneuverability at hypersonic speeds makes the weapons nearly impossible to shoot down—unstoppable…

At hypersonic speeds,  “You’re flying under extraordinary conditions”—extreme velocities, forces, and temperatures.  At hypersonic  speeds “temperatures start to get high enough to worry about… A vehicle’s survival requires resilient superalloys and ultra–high-temperature ceramics. And perhaps novel coolants…

Other nations are chasing the trio of leaders—or teaming up with them. Australia is collaborating with the United States on a Mach 8 HGV, and India with Russia on a Mach 7 Hypersonic Cruise Missile (HCM). France intends to field an HCM by 2022, and Japan is aiming for an HGV in 2026.

THE United States is largely defenseless against such weapons, at least for now, in part because it can’t track them…To remedy that shortcoming, the Pentagon plans to launch hundreds of small satellites with sensors capable of tracking heat sources an order of magnitude cooler than rocket boosters. The full Hypersonic and Ballistic Tracking Space Sensor network could be up and running by 2030, he adds. (The satellites would also be used to help guide U.S. hypersonic weapons.)  Once you have such sensors, “we can find a way to build the interceptors…Interceptors could destroy a hypersonic vehicle either by colliding with it or by detonating a warhead nearby. But Missile Defense Agency (MDA) is also exploring using directed energy: lasers, neutral particle beams, and microwaves or radio waves.

Richard StoneJan, National pride is at stake.’ Russia, China, United States race to build hypersonic weapons, Science, Jan 10, 2020

Rocket Greed

Missiles excite, for unlike other weapons, demand for them is growing strongly. Global defence spending grew by just 1% in 2015—after five years of severe budget cuts in many countries—but the global market for missiles and missile-defence systems is racing ahead at around 5% a year. The capabilities of such weapons are increasing, and with that their price and profitability. Missiles are no longer just flying bombs; they now often contain more computer than explosive to help find their target autonomously…

Executives [of weapon companies] are putting missiles at the forefront of their efforts to expand abroad and to reduce their reliance on home governments.… The most go-ahead so far has been MBDA, a European joint venture, which last year won more missile orders outside Europe than within its home continent. Others are now catching up on foreign sales. Raytheon hopes soon to sign a $5.6 billion deal with Poland to upgrade its Patriot missile-defence shield, while Lockheed and MBDA plan to ink a deal with Germany for their air-defence systems.

[M]issile divisions at Western firms are facing more competition from Chinese, Israeli and Russian firms in some export markets….

Excerpts from Defence Firms: Rocketing Around the World, Economist, July 16, 2016, at 56

U.S. Military Spending 2015

U.S. Deputy Defense Secretary Robert Work on Wednesday, Jan. 28, 2015 urged NATO allies to develop and make more innovative weapons, and said bold action was needed to stay ahead of rapid weapons development by China, Russia and other countries.  Work said the Pentagon has a new plan called “Defense Innovation Initiative” and a separate effort targeting longer-term projects to ensure that the United States continues to have a decisive competitive advantage against potential foes.

Work said concerns about advances by other countries were a key reason that the Pentagon’s fiscal 2016 budget plan to be delivered to Congress will exceed budget caps set by Congress and reverse five years of declines in U.S. military spending.   He said the budget would include “significant” investments in nuclear weapons, space control capabilities, advanced sensors, missile defense and cyber, as well as unmanned undersea vehicles, high-speed strike weapons, a new jet engine, high-energy lasers and rail gun technology…..Lockheed Martin Corp  and Boeing  and other key weapons makers have repeatedly urged the Pentagon to step up investments in key technologies….

Kendall said the department would also earmark funds for development and prototyping of a new “next-generation X-plane” that would eventually succeed the F-35 fighter jet, and a new engine.

Excerpts, ANDREA SHALAL, Pentagon official urges NATO to focus on innovative weapons. Jan 28, 2015