Engineering:Conventional Prompt Strike

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Short description: US defense project

Conventional Prompt Strike (CPS), formerly called Prompt Global Strike (PGS), is a United States military effort to develop a system that can deliver a precision-guided conventional weapon airstrike anywhere in the world within one hour, in a similar manner to a nuclear ICBM.[1][2] Such a weapon would allow the United States to respond far more swiftly to rapidly emerging threats than is possible with conventional forces. A CPS system could also be useful during a nuclear conflict, potentially replacing the use of nuclear weapons against up to 30% of targets.[3] The CPS program encompasses numerous established and emerging technologies, including conventional surface-launched missiles and air- and submarine-launched hypersonic missiles, although no specific CPS system has yet been finalized as of 2018.

System

The CPS system is intended to complement existing American rapid-response forces, such as Forward Deployed Forces, Air Expeditionary Groups (which can deploy within 48 hours) and carrier battle groups (which can respond within 96 hours).[4] Possible delivery systems for CPS warheads include:

  • a rocket similar to existing ICBMs, launched from land or via submarine
  • an air- or submarine-launched hypersonic cruise missile, such as a massive version of Boeing X-51 or Advanced Hypersonic Weapon
  • a kinetic weapon launched from an orbiting space platform

In 2010, the United States Air Force prototyped a CPS system based on a modified Minuteman III ICBM.[5] In March 2011, Air Force Major General David Scott stated that the service had no plans to use a sea- or land-based ICBM system for Prompt Global Strike, as they would be expensive to develop and potentially "dangerous." Instead, efforts would focus on a hypersonic glider.[6] However, the following day, Chief of Staff of the United States Air Force Norton Schwartz said that an ICBM-based CPS system was still an option.[7]

Development history

The Orbital Test Vehicles (OTV-1 and OTV-2) are on the left, and the X-34 is on the right. Mission: "demonstrate a reliable, reusable, unmanned space test platform for the United States Air Force." Possible applications: to serve as part of a reconnaissance program, a space bomber, or even a military satellite delivery system.

Background

The George W. Bush administration considered developing a hypersonic conventional weapon for a CPS role in the 2000s, in the form of DARPA's Falcon Project.[8] A conventionally-armed modification of the Trident SLBM was also proposed as a CPS candidate in 2006.[9] The Bush administration ultimately rejected the idea of a CPS system because of fears that a submarine-launched ballistic missile would trigger the Russian nuclear-launch warning system, potentially provoking a nuclear war.[10] However, the Obama administration continued development of the system later in the decade. In April 2010, Marine Corps General James Cartwright explained the system's rationale, stating that "Today, unless you want to go nuclear, [the conventional military response time is] measured in days, maybe weeks".[5]

A potential enemy cannot be certain that a launched ICBM contains only a conventional warhead, not a nuclear one. It is thus currently unclear what design features or precautions could convince China and Russia, two countries with advanced launch-detection systems and nuclear ICBMs, to ignore their early-warning systems. Current ideas include a low-trajectory missile design, or allowing Russian and Chinese inspection of CPS missile sites.[4][5]

On 11 April 2010, United States Secretary of Defense Robert Gates indicated that the United States already had a Prompt Global Strike capability.[11] This coincided with the New START disarmament treaty signed on 8 April 2010, which set new, lower limits on arsenals of ballistic missiles and their warheads. The treaty does not distinguish between conventional and nuclear versions of weapons, meaning any ballistic CPS missiles and warheads would count toward the new limit. However, the U.S. State Department stated in 2010 that this would not constrain plans for CPS deployment, since plans for the system at that time did not come near the New START limits.[12]

Advanced hypersonic weapon

The Advanced Hypersonic Weapon (AHW) performs its first flight in 2011 on a STARS missile from the Pacific Missile Range Facility at Kauai in Hawaii

On 18 November 2011, the first advanced hypersonic weapon (AHW) glide vehicle was successfully tested by the U.S. Army Space and Missile Defense Command as part of the Prompt Global Strike program.[13] The missile was launched from the Pacific Missile Range Facility in Hawaii, and struck a target at the Reagan Test Site on Kwajalein Atoll, over 3,700 kilometres (2,300 mi) away, in under 30 minutes.[14] The prototype, which incorporated technologies developed by Sandia National Laboratories, was used to gather data to assist the development of future hypersonic warheads.[15] The AHW followed an endo-atmospheric (within earth atmosphere, at altitude below 100 kilometers) non-ballistic trajectory during the test flight. This is a crucial design feature, as following a depressed trajectory that is much lower and flatter than a normal ICBM prevents other nuclear-armed nations from mistakenly thinking the AHW is a nuclear-tipped missile.[16][clarification needed]

The second AHW test flight occurred on 25 August 2014 from the Kodiak Launch Complex in Alaska. The mission was terminated shortly after liftoff due to an anomaly in the launch vehicle.[17] Operators triggered a self-destruct sequence four seconds after launching, with eyewitnesses claiming the weapon had veered off trajectory just as it took off.[18] A Failure Review Board released the results of their investigation into the failed launch in early February 2015. The board determined that an external thermal protective cover, designed to regulate motor temperature, interfered with the launch vehicle's steering assembly; no issues were found with the hypersonic glide body, booster motors, or the Kodiak Launch Complex, and the board determined the test range flight safety officer correctly followed established protocol and procedures.[19]

HTV-2

The HTV-2 Falcon project staged a pair of test flights.

Submarine option

Main pages: Engineering:Submarine-launched ballistic missile and Engineering:Submarine-launched cruise missile

In January 2012, the Pentagon stated that the CPS launch platform would be submarine-based.[20] However, practical efforts to develop the CPS system were delayed by fears of accidentally starting a nuclear conflict.[20] In February 2014, the U.S. Navy solicited proposals for two-year industry trade studies to test the feasibility of developing a hypersonic submarine-launched intermediate-range conventional CPS weapon. The Navy specified that the effort was a study to evaluate technology options, not to develop a system-level specific CPS solution. The Navy stated that it would be interested in awarding one or two 13-month technology evaluation contracts, each worth around US$5 million.[21]

The Conventional Prompt Strike successfully tested a rocket motor for ship and submarine-launched cells in June 2021.[22]:1:35 to 6:50 The Army/Navy Common-Hypersonic Glide Body was successfully tested in 2020.[22] The U.S. Navy awarded Lockheed Martin a contract to integrate the Conventional Prompt Strike weapon system onto the Zumwalt-class destroyer in February 2023.[23]

Foreign responses

People's Republic of China

The People's Liberation Army (PLA) began developing its own long-range hypersonic missile, the DF-ZF rocket-boosted hypersonic glide vehicle, in the 2010s.[24] The DF-ZF, which is similar to the CPS/HTV-2 system, underwent its first full-scale flight test in January 2014, and conducted few more flight tests later, of which only one failed.[24][25] As with Russia's efforts, little is publicly known about the progress of the PLA hypersonic glide vehicle program.[citation needed]

Russia

In December 2010, Russian military experts indicated that the forthcoming S-500 missile defense system would include anti-hypersonic defenses.[26] In December 2012, commenting on the development of a replacement for its R-36M2 Voevoda ICBM, the commander of the Russian Strategic Missile Forces, Sergey Karakaev, stated that the missile would allow Russia "To realize such opportunities as the creation of high precision strategic weapons with non-nuclear warheads and a practical global range. Russia can create non-nuclear, high precision weapons based on intercontinental rockets in the event that the USA also works on designing such a weapon". On 11 December 2013, Vice Prime Minister Dmitry Rogozin warned that Russia would use nuclear weapons if it came under an attack, adding that this possibility serves as the main deterrent to potential aggressors. Rogozin also stated that the Russian Fund of Perspective Researches (FPI) would develop a military response to the CPS system.[27]

In September 2014, Russia's president Vladimir Putin mentioned CPS among a number of the new threats Russia faced, along with the US Ground-Based Midcourse Defense system in Alaska, the Aegis Ballistic Missile Defense System in Europe, and increased NATO activity in eastern Europe. Deputy prime minister Dmitry Rogozin again warned that Russia would upgrade its strategic nuclear forces and aerospace defences in response to the CPS system.[28]

Jane's Intelligence Review reported in 2015 that the Russian Yu-71 hypersonic boost-glide system had been undergoing test flights since 2011, though its predecessors date back to 2001.[29][better source needed]

In October 2015, while attending a non-proliferation conference in New York, the Russian Foreign Ministry's Department of Non-proliferation, Disarmament, and Arms Control Mikhail Ivanovich Ulyanov stated "It is the policy of the United States that is the most serious obstacle in the further reduction in nuclear arms. This is because of their persistent implementation of their line objectively rocking global strategic stability through the unilateral creation of a global system of anti-missile defense that gradually complements the conception of a Prompt Global Strike, which hampers the beginning of negotiations on the prohibition of placing weapons in space and lack of any type of progress in ratifying the CTBT."[30]

In March 2018, the Avangard hypersonic warhead, a development of the Yu-71/Yu-74, entered series production.[31][32][33]

See also

References

  1. ↑ Grossman, Elaine (8 April 2006). "Air Force Proposes New Strike Missile". Military.com. Archived from the original on 30 January 2012. https://web.archive.org/web/20120130142108/http://www.military.com/features/0,15240,93616,00.html. Retrieved 2 February 2012. 
  2. ↑ "In the works: A missile to hit anywhere in 1 hr". The Times of India. 2 April 2010. http://timesofindia.indiatimes.com/world/us/In-the-works-A-missile-to-hit-anywhere-in-1-hr/articleshow/5857401.cms. Retrieved 18 June 2013. 
  3. ↑ Kristensen, Hans M (12 August 2012). "Talks at U.S. Strategic Command and University of California San Diego". Federation of American Scientists. http://www.fas.org/blog/ssp/2012/08/talks.php. Retrieved 3 March 2015. 
  4. ↑ 4.0 4.1 Sanger, David E.; Shanker, Thom (28 February 2010). "White House Is Rethinking Nuclear Policy". The New York Times (New York, NY). https://www.nytimes.com/2010/03/01/us/politics/01nuke.html. Retrieved 8 April 2010. 
  5. ↑ 5.0 5.1 5.2 Whitlock, Craig (8 April 2010). "U.S. looks to nonnuclear weapons to use as deterrent". The Washington Post. https://www.washingtonpost.com/wp-dyn/content/article/2010/04/07/AR2010040704920.html. Retrieved 8 April 2010. 
  6. ↑ "Prompt Global Strike Won't Use ICBMs."[yes|permanent dead link|dead link}}] Defense News.[|permanent dead link|dead link}}]
  7. ↑ "Conventional ICBM Still an Option: Schwartz." Defense News.[|permanent dead link|dead link}}]
  8. ↑ "Defense bill provides $100M for FALCON hypersonic cruise vehicle – UPDATED". Air-Attack.com. 12 November 2007. Archived from the original on 5 February 2012. https://web.archive.org/web/20120205065537/http://air-attack.com/news/article/2828/Defense-bill-provides-100M-for-FALCON-hypersonic-cruise-vehicle---UPDATED.html. Retrieved 2 February 2012. 
  9. ↑ "Future Ballistic Missile Projects (United States), Offensive weapons". Jane's Strategic Weapon Systems. 27 October 2011. http://articles.janes.com/articles/Janes-Strategic-Weapon-Systems/Future-Ballistic-Missile-Projects-United-States.html. Retrieved 13 March 2015. 
  10. ↑ "U.S. Faces Choice on New Weapons for Fast Strikes". New York Times. 23 April 2010. https://www.nytimes.com/2010/04/23/world/europe/23strike.html. Retrieved 27 November 2011. 
  11. ↑ "'Meet the Press' transcript". NBC News. 11 April 2010. http://www.nbcnews.com/id/36362669. Retrieved 18 June 2013. "And we have prompt global strike affording us some conventional alternatives on long-range missiles that we didn't have before" 
  12. ↑ "Conventional Prompt Global Strike". U.S. State Department. 8 April 2010. https://www.state.gov/t/vci/rls/139913.htm. Retrieved 3 March 2015. 
  13. ↑ "AHW". GlobalSecurity.org. 23 November 2011. http://www.globalsecurity.org/military/systems/munitions/ahw.htm. Retrieved 3 March 2015. 
  14. ↑ "Pentagon tests long-range hypersonic weapon". BBC News. 18 November 2011. https://www.bbc.co.uk/news/world-us-canada-15790620. Retrieved 19 November 2011. 
  15. ↑ "Army successfully launches Advanced Hypersonic Weapon demonstrator". Fort Gordon Signal. 2 December 2011. Archived from the original on 23 January 2013. https://archive.today/20130123151428/http://www.fortgordonsignal.com/news/2011-12-02/Front_Page/Army_successfully_launches_Advanced_Hypersonic_Wea.html. Retrieved 29 December 2011. 
  16. ↑ "Army Successfully Tests Hypersonic Weapon Design". DefenseTech.org. 17 November 2011. http://defensetech.org/2011/11/17/army-successfully-tests-hypersonic-weapon-design/. Retrieved 3 March 2015. 
  17. ↑ Gertz, Bill (25 August 2014). "Army Hypersonic Missile Fails in Second Test". The Washington Free Beacon. http://freebeacon.com/national-security/pentagon-set-to-test-new-hypersonic-missile/. Retrieved 25 August 2014. 
  18. ↑ "Army's hypersonic missile fails during test". MilitaryTimes.com. 25 August 2014. http://www.militarytimes.com/article/20140825/NEWS04/308250028/Army-s-hypersonic-missile-fails-during-test. Retrieved 3 March 2015. 
  19. ↑ "Launch vehicle support equipment causes test failure". Army.mil. 5 February 2015. http://www.army.mil/article/142263/Launch_vehicle_support_equipment_causes_test_failure/. Retrieved 3 March 2015. 
  20. ↑ 20.0 20.1 "Pentagon's Global Strike Weapon Stuck in Limbo; Congress Fears Accidental WWIII". AOL Defense. 17 December 2012. https://defense.aol.com/2012/12/17/pentagons-global-strike-weapon-stuck-in-limbo-congress-fears-a/. Retrieved 12 December 2012. 
  21. ↑ "US Navy Explores Sub-Launched Hypersonic Missiles". TheDiplomat.com. 4 February 2014. https://thediplomat.com/2014/02/us-navy-explores-sub-launched-hypersonic-missiles/. Retrieved 3 March 2015. 
  22. ↑ 22.0 22.1 Megan Eckstein (12 Jun 2021) Video: A first in Navy hypersonics and cuts in the Army budget | Defense News Weekly Full Episode, 6.12.21
  23. ↑ lockheedmartin.com - Lockheed Martin Awarded $1.1 Billion Initial Contract To Provide Nation's First Sea-Based Hypersonic Strike Capability (Feb. 17, 2023)
  24. ↑ 24.0 24.1 "China-U.S. Hypersonic Arms Race Is Having a Little Trouble". Defence One. 27 August 2014. http://www.defenseone.com/technology/2014/08/china-us-hypersonic-arms-race-having-little-trouble/92567/. Retrieved 5 March 2015. 
  25. ↑ "OFFSET THIS! CHINA'S HYPERSONIC GLIDER FLIES FOR THE THIRD TIME THIS YEAR". Popular Science. 9 December 2014. http://www.popsci.com/offset-chinas-hypersonic-glider-flies-third-time-year. Retrieved 5 March 2015. 
  26. ↑ Balmasov, Sergei (17 December 2010). "Will S-500 system be good against Minotaur IV?". Pravda. http://english.pravda.ru/world/americas/17-12-2010/116250-s_500_minotaur-0/. Retrieved 9 March 2013. 
  27. ↑ "Russia designs new types of intercontinental missiles". Space Daily. 31 December 2012. http://www.spacedaily.com/reports/Russia_designs_new_types_of_intercontinental_missiles_999.html. Retrieved 8 January 2013. 
  28. ↑ "Russia to boost nuclear, space defence forces against US". Space Daily. 10 September 2014. http://www.spacedaily.com/reports/Russia_to_boost_nuclear_space_defence_forces_against_US_999.html. Retrieved 3 March 2015. 
  29. ↑ "Russia tested a hypersonic glide vehicle in February". Washington Free Beacon. 25 June 2015. http://freebeacon.com/national-security/russia-tested-hypersonic-glide-vehicle-in-february. 
  30. ↑ "STATEMENT by Mikhail I.Uliyanov, Acting Head of the Delegation of the Russian Federation at the 2015 Review Conference of the Parties to the Treaty on the Non-Proliferation of Nuclear Weapons (General debate)". UN. https://www.un.org/en/conf/npt/2015/statements/pdf/RU_en.pdf. 
  31. ↑ "Russia's Avangard strategic systems enter series production – source". TASS. 3 March 2018. http://tass.com/defense/992643. 
  32. ↑ "Russia's Defense Ministry signs production contract for Avangard hypersonic systems". TASS. 12 March 2018. http://tass.com/defense/993495. 
  33. ↑ "Russia's Avangard hypersonic missile system". TASS. 12 March 2018. http://tass.com/defense/993615. 

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