Editing CRV7 (section)

==Warheads==
[[File:British Army WAH-64 'Apache' attack helicopter fires a salvo of CRV7 MOD 45141881.jpg|thumb|alt=Photograph of an AgustaWestland Apache firing CRV7 rockets at night.|A British Army WAH-64 'Apache' attack helicopter fires a salvo of CRV7 (Practice) rockets at targets down range during a two-day live firing exercise at Lulworth Ranges/Bovington Camp in Dorset.]]
The primary warhead for the original CRV7 was the U.S. M151 High Explosive Point Detonating (HEPD) round, a simple impact-fired 10&nbsp;lb (4.5&nbsp;kg) [[high-explosive]] shell. Like the U.S. 2.75-inch (70&nbsp;mm) weapons, the CRV7 could also be equipped with the M156 Smoke or M257/278 Illumination ([[Flare (countermeasure)|flare]]) rounds. Bristol also introduced their own WTU-5001/B Practice round, consisting of an {{convert|8|lb|kg|abbr=on}} flat-ended soft steel rod encased in a nylon fairing, and later introduced a similar version with a hardened steel rod, the WTU-5001A/B.<ref name=fixed/> These rounds matched the ballistics of the M151 for training purposes and were widely used during the development and introduction of the weapon to the Canadian Forces.

Bristol followed this with the {{convert|16|lb|kg|abbr=on}} WDU-50001/B "Anti-Bunkerette" round, a [[High Explosive Incendiary/Armor Piercing Ammunition|semi-armor-piercing high-explosive incendiary]] (SAPHEI/HEISAP) warhead designed for use against reinforced concrete buildings, specifically hardened aircraft shelters. Its heavy steel shell allows the round to penetrate the hangar wall before the 75&nbsp;g incendiary warhead is ignited.{{citation needed|date=April 2022}} The round can penetrate {{convert|13|ft|m|abbr=on}} of earth, {{convert|3|ft|cm|abbr=on}} of concrete, and {{convert|1|in|mm|abbr=on}} of steel, in series.<ref name=roles/>

The CRV7's kinetic energy was so high that testers were surprised to find that practice rounds fitted with an {{convert|8|in|cm|1|adj=on}} steel rod were penetrating outdated Centurion tanks used for target practice. This resulted in the development of a dedicated antitank warhead that replaced the steel rod in the practice warhead with a tungsten rod. This new antitank warhead could penetrate a Soviet [[T-72]] main battle tank armour from any attack angle. Further study into this effect led to the WDU-5002/B FAT warhead, ''Flechette Anti-Tank'', containing five [[tungsten]]-reinforced steel [[flechette]]s that could penetrate a T-72's side and top armour at a distance of {{convert|10000|ft|m}}. It was also found to be a useful warhead for use against medium and light armoured vehicles.<ref name=roles/><ref>[http://www.magellanaerospace.com/content/objects/FAT_Warhead.pdf "Flechette Anti-Tank Warhead"] {{webarchive|url=https://web.archive.org/web/20141104132112/http://www.magellanaerospace.com/content/objects/FAT_Warhead.pdf |date=2014-11-04 }}, Bristol Aerospace, August 2002</ref> Further development led to the WDU-500X/B "General Purpose Flechette" which releases 80 tungsten flechettes that can penetrate {{convert|1.5|in|mm}} of roll-hardened armor<ref>[http://www.magellanaerospace.com/content/objects/FAT_Warhead.pdf "General Purpose Flechette Warhead for Attack Helicopters"] {{webarchive|url=https://web.archive.org/web/20141104132112/http://www.magellanaerospace.com/content/objects/FAT_Warhead.pdf |date=2014-11-04 }}, Bristol Aerospace, November 2001</ref> for use against personnel, some light armour, thin-skinned vehicles, and helicopters.

Bristol also re-sells the RA-79 from Raufoss Ammunisjonsfabrikker, a semi-armor-piercing round designed to attack shipping.<ref>[http://www.magellanaerospace.com/content/objects/Ra_79.pdf "RA-79 High Explosive Incendiary Semi-Armour Piercing"] {{webarchive|url=https://web.archive.org/web/20141104132004/http://www.magellanaerospace.com/content/objects/Ra_79.pdf |date=2014-11-04 }}, April 2002</ref>

The CRV7 Multi-Purpose Sub Munition (MPSM) contained nine M73 submunitions in each rocket. It could therefore be classified as a [[cluster bomb]].<ref>[http://www.mineaction.org/downloads/1/hrw_policy%20survey.pdf ''Survey of Cluster Munition Policy and Practice'', pub Human Rights Watch, February 2007, p18.]{{dead link|date=July 2017 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref name=BBC19May2008>{{cite news |first = Sangita |last = Myska |url = http://news.bbc.co.uk/1/hi/uk/7407564.stm |title = UK seeks cluster bomb exemption |publisher = BBC News |date = 19 May 2008}}</ref><ref name=Hansard25Mar10>[https://publications.parliament.uk/pa/cm200910/cmhansrd/cm100325/text/100325w0002.htm Hansard, 25 Mar 2010, Column 415W]</ref> Britain destroyed the last of its CRV7 MPSMs in July 2009 in accordance with its interpretation of the [[Convention on Cluster Munitions]].<ref name=Hansard25Mar10/><ref name=Hansard01Nov2008>{{citation |url=https://publications.parliament.uk/pa/cm201011/cmhansrd/cm111101/text/111101w0004.htm |title=UN Convention on Certain Conventional Weapons |work=Hansard House of Commons Debates Written Answers |publisher=UK Parliament |date=1 November 2011 |at=Column 588W}}</ref><ref>[http://www.article36.org/wp-content/uploads/2011/11/Assessment-of-UK-position-in-relation-to-draft-Protocol-VI-to-the-CCW.pdf Article 36, ''Assessment of UK position in relation to draft Protocol VI to the CCW'', 11 Nov. 2011.]</ref>