Eight Qassam launchers, seven equipped with operating systems and one armed and ready to launch, uncovered during an IDF operation in northern Gaza.
|Used by||Palestinian militants|
|Designer||Izz ad-Din al-Qassam Brigades|
|Weight||Qassam 1: 35 kg; Qassam 2: 40 kg; Qassam 3: 50 kg; Qassam 4: 40-50 kg|
|Length||Qassam 1: 180 cm; Qassam 2: 180 cm; Qassam 3: 220 cm; Qassam 4: 244 cm|
|Diameter||Qassam 1: 11.5 cm; Qassam 2: 11.5 cm; Qassam 3: 11.5 cm; Qassam 4: 11.5 cm|
|Warhead||Explosive material with metal bearings; standard explosive material|
|Warhead weight||Qassam 1: 5 kg; Qassam 2: 10 kg; Qassam 3: 20 kg; Qassam 4:~10 kg|
|Propellant||Solid fuel (sugar and potassium nitrate mix)|
|Qassam 1: 5 km; Qassam 2: 12 km; Qassam 3: 16 km|
The Qassam rocket (Arabic: صاروخ القسام Ṣārūkh al-Qassām; also Kassam) is a simple, steel artillery rocket developed and deployed by the Izz ad-Din al-Qassam Brigades, the military arm of Hamas. Three models have been produced and used, with the first introduced in 2001.
More generally, all types of Palestinian rockets fired into southern Israel, for example the Palestinian Islamic Jihad Al Quds rockets, are called Qassams by the Israeli media, and often by foreign media.
History of the Qassam
Qassam rockets are named after the Izz ad-Din al-Qassam Brigades, the armed branch of Hamas, itself named for Izz ad-Din al-Qassam, a Syrian Muslim preacher whose death during a guerrilla raid against British Mandatory authorities in 1935 was one of the catalysts for the 1936–39 Arab revolt in Palestine.
The production of Qassams began in September 2001 following the outbreak of the Second Intifada. The first Qassam to be launched was the Qassam-1, fired on October 2001, with a maximum range of 3 kilometers (1.9 mi) to 4.5 kilometers (2.8 mi). February 10, 2002 was the first time Palestinians launched rockets into Israel, rather than at Israeli settlements in the Gaza Strip. One of the rockets landed in Kibbutz Saad. A Qassam first hit an Israeli city on March 5, 2002 when two rockets struck the southern city of Sderot. Some rockets have hit as far as the edge of Ashkelon. By the end of December 2008, a total of 15 people had been killed by Palestinian rockets since attacks began in 2001. Since 2000, Palestinian rockets, which include the Qassam, alongside others such as the Grad rocket, have been used to kill 22 Israeli citizens and one Thai national (as of January 9, 2009).
Rocket, Design and Cost
The Qassam rocket gained notoriety as the best-known type of rocket deployed by Palestinian militants, mainly against Israeli civilians, but also some military targets during the Second Intifada of the Israeli–Palestinian conflict. These rockets are too inaccurate to target specific military objectives in or near civilian areas, and are mainly meant for “harming civilians”, as Human Rights Watch stated. 
The aim of the Qassam rocket design appears to be ease and speed of manufacture, using common tools and components. To this end, the rockets are propelled by a solid mixture of sugar and potassium nitrate, a widely available fertilizer. The warhead is filled with smuggled or scavenged TNT and urea nitrate, another common fertilizer. This is close to Ammonite.
The rocket consists of a steel cylinder, containing a rectangular block of the propellant. A steel plate which forms and supports the nozzles is then spot-welded to the base of the cylinder. The warhead consists of a simple metal shell surrounding the explosives, and is triggered by a fuse constructed using a simple firearm cartridge, a spring and a nail.
While early designs used a single nozzle which screwed into the base, recent rockets use a seven-nozzle design, with the nozzles drilled directly into the rocket baseplate. This change both increases the tolerance of the rocket to small nozzle design defects, and eases manufacture by allowing the use of a drill rather than a lathe during manufacture due to the smaller nozzle size. However due to the cone shape of each of the 7 nozzles, each nozzle's inside must be made with a lathe, or else the interior of the nozzle would be cylindrical rather than conical (see rocket engine nozzle). Unlike many other rockets, the nozzles are not canted, which means the rocket does not spin about its longitudinal axis during flight. While this results in a significant decrease in accuracy, it greatly simplifies rocket manufacture and the launch systems required.
The introduction of the Qassam rocket took Israeli politicians and military experts by surprise, and reactions have been mixed. In 2006, the Israeli Ministry of Defense viewed the Qassams as "more a psychological than physical threat." A 2008 study found that over half of Sderot's residents have been hurt, either physically or psychologically by Qassams. The Israel Defense Forces has reacted to the deployment of the Qassam rockets by deploying the Red Color early warning system in Sderot, Ashkelon and other at-risk targets. The system consists of an advanced radar that detects rockets as they are being launched, and loudspeakers warn civilians to take cover between 15 and 45 seconds before impact in an attempt to minimize the threat posed by the rockets. A system called Iron Dome, designed to intercept the rockets before they can hit their targets, is in use since March 2011. A system based on lasers (Nautilios) was researched in a joint Israeli-American project in the early 2000s, but was discontinued.
The Palestinian president Mahmoud Abbas stated "There is no justification for rockets from Gaza or anywhere else," He later added "Rockets attacks are in vain because they do not bring peace any closer."
Ibrahim Khreisheh, Palestinian envoy to the United Nations Human Rights Council (UNHRC), on July 9, 2014 states in an PA TV interview translated by MEMRI, that indiscriminate Hamas rockets from densely populated residential areas are “crimes against humanity”, while Israeli strikes are legal response to that.
According to a public document (July 2014) Amnesty International "has documented that Palestinian armed groups have stored munitions in and fired indiscriminate rockets from residential areas in the Gaza Strip, and available evidence indicates that they continue to do both during the current hostilities, in violation of international humanitarian law (..) Under international humanitarian law, (..) Parties to the conflict must also take necessary precautions to protect civilians in their power from the effects of attack. This includes avoiding, to the maximum extent feasible, co-locating military objectives in the vicinity of densely populated civilian neighbourhoods. This means the parties should avoid endangering civilians by storing ammunition in, and launching attacks from, populated civilian areas."
Human Rights Watch issued an analysis, stating, that "such weapons are therefore indiscriminate when used against targets in population centers. The absence of Israeli military forces in the areas where rockets hit, as well as statements by leaders of Palestinian armed groups that population centers were being targeted, indicate that the armed groups deliberately attacked Israeli civilians and civilian objects." Furthermore, the public document by Human Rights Watch stated, that "Hamas, the ruling authority in Gaza, is obligated to uphold the laws of war and should appropriately punish those responsible for serious violations". The international community considers indiscriminate attacks on civilians and civilian structures that do not discriminate between civilians and military targets as illegal under international law.
An online clock timer, developed by Aaron Friedman and Yehonatan Tsirolnik, that automatically resets when Palestinian rocket attacks on Israel occur, uses information from the IDF Home Front Command system and counts time up from the last Palestinian rocket attack on Israel. It displays how long Israel has been rocket free and shows the summed up total numbers of Palestinian rocket attacks on Israel. "Israel has been under non stop rocket attacks for years (..) Whenever a rocket is fired, it restarts. Sadly, this counter never really gets above an hour”, Friedman said on July 18, 2014 during the 2014 Israel–Gaza conflict. An amateur YouTube video, showing the Israeli iron dome defense system at a military checkpoint near a crossing into Gaza taking out multiple Qassam rockets in less than a minute, got viral in just one day since being uploaded, the online newspaper Arutz Sheva reported on August 27, 2014.
Similar Palestinian rockets
Other Palestinian militant groups have also developed home-made rockets. The media generally refer to all Palestinian high-trajectory rockets as "Qassam rockets" or "Qassam missiles", while they call most rockets fired from Lebanon "Katyushas", as a Katyusha is not a specific model but rather a generic class of rocket.
- Palestinian Islamic Jihad – Al Quds 101 & 2
- Popular Resistance Committees – al Nasser-3
- Tanzim – Saria-2
- Fatah – Kafah
- 34% – Palestinian Islamic Jihad
- 22% – Hamas
- 8% – Fatah
- 6% – Popular Resistance Committees
- 30% – unknown
The Intelligence and Terrorism Information Center reports that the number of Palestinian rockets fired per year were:
- 2001: 4
- 2002: 35
- 2003: 155
- 2004: 281
- 2005: 179
- 2006: 946
- 2007: 896
- 2008: 2,048
- What are Qassam Rockets?
- נענע10 - תיעוד: רגעי האימה של ילדי שדרות בדרך לבית-ספר - חדשות
- שדרונט- הקסאם
- Rocket threat from the Gaza Strip, 2000–2007 (PDF). Intelligence and Terrorism Information Cente (Report) (Israel Intelligence Heritage and Commemoration Center). December 2007: 33. Retrieved 2010-06-05.
- "HAMAS rockets". GlobalSecurity.org. Retrieved 11 August 2009.
- "History of the Qassam Rocket". Jewish Policy Center. Retrieved 12 August 2009.
- "Palestinians launch rockets at Israel". Israeli Ministry of Foreign Affairs. 10 February 2002. Retrieved 11 August 2009.
- "Victims of Palestinian Violence and Terrorism since September 2000". Israel Ministry of Foreign Affairs. Retrieved 2008-03-06. Incidents: June 28, 2004 (2 killed), September 29, 2004 (2 killed), January 15, 2005 (1 killed), June 7, 2005 (3 killed), July 14, 2005 (1 killed), November 15, 2006 (1 killed), November 21, 2006 (1 killed), May 21, 2007 (1 killed), May 27, 2007 (1 killed), February 27, 2008 (1 killed), May 12, 2008 (1 killed)
- al-Mughrabi, Nidal (January 9, 2009). "UN call for immediate Gaza truce, attacks go on". Reuters.
- "Man killed in Qassam attack". Ynetnews.com. 1995-06-20. Retrieved 2011-09-07.
- Gaza's rocket threat to Israel, BBC, 21 January 2008
- Hamas Must End Attacks Against Civilians, Cease Use of Qassam Rockets, Human Rights Watch, 8 June 2005
- Lorber, Dr Azriel. "The Growing Threat of the Kassam Unguided Rockets". Retrieved 2009-01-05.
- "What are Qassam Rockets?". Jewish Policy Center. Retrieved 9 August 2009. "The raw materials for one rocket can cost up to $800."
- Ulrike Putz (29 January 2008). "A Visit to a Gaza Rocket Factory (Islamic Jihad)". Spiegel Online. Retrieved 4 August 2010.
- IMRA – Saturday, July 15, 2006 Historical Survey of Israeli Leaders: Will Rockets Fall?
- "Peres: Enough with Qassam hysteria". Ynetnews. 20 June 2006. Retrieved 2007-03-11.
- "Defense Ministry: Trade with China resumed". Ynetnews. 1 March 2006. Retrieved 2007-03-11.
- Ilana Curiel (24 November 2008). "Study: Over half of Sderot residents are Qassam casualties". Ynet.
- "Rocket attacks plague Israeli towns". BBC. 28 December 2008. Retrieved 2009-01-05.
- Ronen, Gil. "Watch: Iron Dome Intercepts More Than 10 Rockets at Once". http://www.israelnationalnews.com/News/. Arutz Sheva. Retrieved 27 August 2014.
- Jerusalem Post http://www.jpost.com/Middle-East/Abbas-No-justification-for-Gaza-rocket-attacks. Missing or empty
- Soffer, Ari. "PA Official Admits: Israel Follows International Law, We Don't". israelnationalnews.com/News/. Arutz Sheva. Retrieved 13 July 2014.
- "Palestiinan Envoy to UNHRC: Israelis Warn Civilians Before Attacks, We Don't". youtube.com. MEMRITVVideos. Retrieved 13 July 2014.
- Document - Israel and the Occupied Palestinian Territories: Israel/Gaza conflict, July 2014
- "Protection of the civilian population". Protocol Additional to the Geneva Conventions of 12 August 1949, and relating to the Protection of Victims of International Armed Conflicts (Protocol I), 8 June 1977. International Committee of the Red Cross. Retrieved 10 July 2014.
- "Gaza: Palestinian Rockets Unlawfully Targeted Israeli Civilians". hrw.org/news/. Human Rights Watch. Retrieved 11 July 2014.
- Yehonatan, Tsirolnik & Aaron Friedman. "ISRAEL HAS BEEN ROCKET FREE FOR...". http://israelhasbeenrocketfreefor.com/. http://israelhasbeenrocketfreefor.com. Retrieved 15 August 2014.
- IDF. "Rocket Attacks on Israel from Gaza Strip". idfblog.com/facts-figures/. Israel Defense Forces. Retrieved 15 August 2014.
- Press, Viva Sarah (July 19, 2014). "Israelhasbeenrocketfree.com automatically resets when Hamas fires a rocket toward Israel.". www.israel21c.org. ISRAEL21c. Retrieved 15 August 2014.
- Haaretz (Jul 21, 2014). "How long has it been since the last rocket strike on Israel?" (haaretz.com/business). Haaretz.com, the online edition of Haaretz Newspaper in Israel. Retrieved 15 August 2014.
- "15 Qassam Rockets intercepted At Once By The Iron Dome". http://www.youtube.com. Youtube.com. Retrieved 27 August 2014.
- Anti-Israeli Terrorism in 2007 and its Trends in 2008 (PDF). Intelligence and Terrorism Information Cente (Report) (Israel Intelligence Heritage and Commemoration Center). May 2008: 11,28. Retrieved 2010-06-05.
- חדשות - צבא וביטחון nrg - ...שנה לעופרת יצוקה: ירידה חדה
|Wikimedia Commons has media related to Qassam rocket.|
- GlobalSecurity.org – Qassam Rocket
- The Homemade Rocket That Could Change The Mideast – By Tony Karon, TIME Online Edition (10 February 2002)
- Qassam-2 missile a wild card in Mideast conflict – CNN (March 5, 2002)
- Gaza rockets kill two in Israel, BBC article (June 28, 2004)
- A Visit to a Gaza Rocket Factory, by Ulrike Putz, der Spiegel international (January 29, 2008, in English)
- Katyusha & Qassam Rockets on www.aerospaceweb.org
- Photos: Qassam rockets in Sderot
- Gaza's Bottle Rockets - Why Hamas' Arsenal Wasn't Worth a War (2014-08-03), Mark Perry, Foreign Affairs