Glebia Challengera

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The Space Shuttle fleet was grounded for two years and eight months while the program underwent investigation, redesign, and restructuring. On September 29, 1988, Discovery launched on STS-26 mission from LC-39B with a crew of five veteran astronauts. [67] Its payload was TDRS-3, which was a substitute for the satellite lost with Challenger. The launch tested the redesigned boosters, and the crew wore pressure suits during the ascent and reentry. The mission was a success, and the program resumed flying. [68] Legacy [ edit ] Fragment of Challenger 's fuselage on display at Kennedy Space Center

Protection [ edit ] Challenger 2 with armour upgrades to the sides of the turret, skirts, bar armour to rear. Smoke grenade launchers visible on turret front. Counter-IED ECM antennas are on the platform on the turret, and additional ECM equipment overhangs the left and right front fenders. A remote controlled weapon systems (RCWS) has also been fitted to the turret. a b Schmidt, William E. (April 30, 1986). "Bodies of Astronauts Flown to Delaware". The New York Times. Archived from the original on June 28, 2021 . Retrieved July 15, 2021. Space Shuttle Challenger Monument (Los Angeles, California)". Astronaut Ellison S. Onizuka Memorial. 2021. Archived from the original on April 27, 2021 . Retrieved April 27, 2021. As a result of the disaster, NASA established the Office of Safety, Reliability, and Quality Assurance, and arranged for deployment of commercial satellites from expendable launch vehicles rather than from a crewed orbiter. To replace Challenger, the construction of a new Space Shuttle orbiter, Endeavour, was approved in 1987, and the new orbiter first flew in 1992. Subsequent missions were launched with redesigned SRBs and their crews wore pressurized suits during ascent and reentry.About". McAuliffe-Shepard Discovery Center. 2021. Archived from the original on April 27, 2021 . Retrieved April 27, 2021. The British Army maintained its requirement for a four-man crew, including a loader, after risk analysis of the incorporation of an automatic loader suggested that autoloaders reduced battlefield survivability. Mechanical failure and the time required for repair were prime concerns. In comments quoted by Russian news agency TASS, Mr Lavrov said: "This comes from a man who holds a high-ranking position and cannot but receive expert views, including of Pentagon specialists who specialise in analysing relations between Moscow and Washington and who cannot but understand what is going on in Ukraine and that Russia has never had and can never have any aggressive or expansionist plans." Dunbar, Brian (August 7, 2017). "STS-51L Mission Profile". NASA. Archived from the original on May 5, 2017 . Retrieved November 3, 2021.

On 29 January 2023, the UK Ministry of Defence announced that the first Ukrainian troops had arrived in the UK to begin training on Challenger 2. [41] On 8 February, Sunak and Ukrainian President Zelensky paid a visit to Ukrainian soldiers at Lulworth Camp where they were being trained on Challenger 2 tanks by British soldiers from the Royal Tank Regiment and the Queen's Royal Hussars. Sunak used the opportunity to reaffirm the British intention to have the first Challenger 2 tanks delivered to Ukraine by March 2023. [42] a b c d e f g Harwood, William (2015). "STS-51L". CBS News. Archived from the original on June 11, 2021 . Retrieved July 29, 2021. National Memorial Cemetery of the Pacific". National Cemetery Administration. U.S. Department of Veterans Affairs. April 23, 2021. Archived from the original on January 26, 2021 . Retrieved July 15, 2021.The commander has a panoramic SAGEM VS 580-10 gyrostabilised sight with laser rangefinder. The elevation range is +35° to −35°. The commander's station is equipped with eight periscopes for 360° vision. Report to the President: Actions to Implement the Recommendations of the Presidential Commission on the Space Shuttle Challenger Accident" (PDF). NASA. July 14, 1986. Archived (PDF) from the original on February 24, 2021 . Retrieved July 19, 2021. On 21 June 2023, the Ukrainian army released a video purportedly showing the Challenger 2 in Ukraine. The tanks are assigned to the 11th Separate Army Aviation although this may be a deception move. [67] In September 2023, Ukrainian Air Assault Forces Command published a video interview with a Ukrainian Challenger 2 crew member who stated that the tank was a "sniper rifle among tanks" due to its accuracy. The anonymous crew member also praised the tank's protection which was more favourable than that of the T-62, T-72, and T-80 tanks which he had previously crewed. [68] On 4 September, a video emerged from Robotyne which showed the first combat loss of the Challenger 2, the day after the Ukrainian Air Assault Forces Command published the video. [69] A 9M133 Kornet missile triggered a fire that apparently cooked off the Challenger 2's ammunition charges in their special containers. Filled with water, these containers are supposed to prevent catastrophic secondary explosions, but they failed, and the resulting blast wrenched the Challenger 2’s turret from its hull. [70] Upgrades [ edit ] CLIP [ edit ] Meanwhile, pro-Russian military bloggers raised the alarm on Tuesday about Ukraine’s surprise offensive in the north-east of Ukraine while both armies appear to have committed most of their forces to the south-east. The Challenger 2 entered service with the Royal Scots Dragoon Guards, with the last delivered in 2002. After the Army 2020 restructuring, only three Challenger 2 Tank Regiments will remain: the Queen's Royal Hussars, the King's Royal Hussars and the Royal Tank Regiment, each of which is the tank regiment of an Armoured Infantry Brigade. A single Army Reserve regiment, The Royal Wessex Yeomanry, will provide reservist Challenger crews to the regular regiments.