|First flight||ca. 2004|
|Developed from||IAI Heron|
The IAI Eitan (איתן – "Steadfast"), also known as Heron TP, is a reconnaissance unmanned aerial vehicle (UAV) developed in Israel in the early 21st century by the Malat division of Israel Aerospace Industries. The aircraft is a newer version of the IAI Heron.
A medium-altitude, long endurance (MALE) UAV, the Eitan can operate at altitudes above commercial air traffic and features all-weather capability, de-icing systems, automatic takeoff and landing (ATOL) systems, and triple-redundant avionics. It is a high-wing cantilever monoplane with wings of high aspect ratio. Booms extend rearward from the wings and carry twin tails that are joined by a common horizontal stabiliser. The main units of the tricycle undercarriage retract into the tail booms, and the nosewheel retracts into the fuselage. A single turboprop engine is mounted in the rear fuselage, driving a pusher propeller. Construction throughout is of composite materials.
In April 2004, the Israeli Air Force magazine announced the existence of the programme and reported that two prototypes were already flying. In March the following year, US company Aurora Flight Sciences announced a joint venture to market the aircraft under the name Orion. Aurora hoped to have a machine flying during 2007, but by the middle of that year, the company had not released anything further about the project. Meanwhile reports emerged of a "first flight" for the Eitan in Israel on 15 July 2006, despite the previous reports that the aircraft had already been flying two years previously. In late January 2007, Yedioth Ahronoth reported yet another seemingly contradictory announcement, which indicated that the maiden flight was to take place in the coming days.
The Eitan was publicly unveiled at a media event at Tel Nof Airbase on 8 October 2007. The sensors fitted on this occasion included a synthetic aperture radar (SAR) mounted in a pod on the aircraft's belly, a multi-sensor payload carried under its nose, and two conformal signals intelligence (SIGINT) arrays. Additional sensors may be carried at the ends of the tail booms. Analysis of the configuration presented to the media suggests an aircraft intended for deep penetration roles and on-board SIGINT processing capability. However, at the media event an IAF official stated that IAI and the IAF had tested "all kinds of payloads, in all kinds of configuration schemes." Apart from its intelligence, surveillance, target acquisition, and reconnaissance (ISTAR) role, the Eitan may also be used for aerial refuelling, and armed roles including missile defence and long-range strategic strike.
In February 2010 the Israeli Air Force unveiled its new fleet of Eitans. The first unit to operate the type, 210 Squadron, was inaugurated at Tel Nof in December 2010. In January 2012, an Eitan drone crashed near Hafetz Haim during tests of new payloads; no injuries were reported.
- Germany - In 2010 IAI offered the Eitan, under a teaming agreement with Rheinmetall, in pursuit of the German air force's long-term "Saateg" MALE UAV requirement.
- France - In 2011 France selected the IAI Eitan for the French military. The deal was cancelled later in November 2011 by the French senate with the funds being allocated to a joint Franco-British MALE UAV design. 
- Spain - Indra sistemas and Thales Group have offered to the Spanish Ministry of Defence a system based on the IAI Eitan.
- United Kingdom - Britain's Royal Air Force considering purchase of IAI Eitan UAVs.
Data from IAI website
- Crew: none
- Capacity: 2,000 kg (4,400 lb) payload
- Max takeoff weight: 4,650 kg (10,250 lb)
- Length: 13 m (43 ft in)
- Wingspan: 26 m (86 ft in)
- Powerplant: 1 × Pratt & Whitney PT6A, 900 kW (1,200 hp) each
- Maximum speed: 370+ km/h ( mph)
- Range: 7,400+ km (4,600+ miles)
- Endurance: 70+ hours
- Service ceiling: 14,000+ m (45,000+ ft)
- Aircraft of comparable role, configuration and era
- Egozi 2008
- "Heron TP"
- "IAI's Heron TP UAV sets new technological and operational records"
- "IAI Heron TP Eitan"
- "Eitan: Israel develops the world's largest UAV"
- Egozi 2007
- Opall-Rome 2007
- "Israel AF Hones Manned-UAV Mix"
- Mahnaimi, Uzi (2009-05-29). "Israeli drones destroy rocket-smuggling convoys in Sudan". The Times. Retrieved 2010-02-21.
- "Israel unveils new drone that can fly to Gulf". BBC News. 2010-02-21. Retrieved 2010-02-21.
- Harari, Yael (December 21, 2010). "Launching a New Squadron". Israeli Air Force. Retrieved December 28, 2010.
- Egozi, Arie (30 January 2012). "Israeli Heron TP crashes as test flight goes wrong". Flight International (Flightglobal). Retrieved 5 April 2012.
- "Military drone crashes near central Israel town". Haaretz. 2012-01-29.
- Egozi, Arie (June 23, 2010). "Israel opens doors at Eitan UAV squadron". Flight International. Retrieved August 17, 2011.
- Trimble, Stephen (July 21, 2010). "France selects Heron TP over Predator B for new contract". Flight International. Retrieved August 17, 2011.
- "French Senate Finance Amendment Derails Heron TP Programme". UAS Vision. 28.11.11. Retrieved 16.05.13.
- "Dassault, Thales and Indra Submit Joint MALE UAV Offer to French and Spanish MoDs". Flight International. May 28, 2011. Retrieved August 17, 2011.
- Britain's Royal Air Force considering purchase of Israeli unmanned aerial vehicle - Israel News | Haaretz Daily Newspaper
- Wilson, J. R. (May 2007). "UAV worldwide roundup 2007". Aerospace America. p. 30. "With a nearly 2-ton payload capacity and classified range thought to exceed 4,000 n.mi. (more than enough to reach any likely Israeli area of interest, including Iran), the Eitan is being looked at for a wide range of missions, from aerial refueling to attacking enemy missile batteries."
- Egozi, Arie (16 October 2007). "Israeli air force reveals sensor-equipped Eitan UAV". Flight International. Retrieved 2008-02-24.
- Egozi, Arie (11 February 2008). "Israel special – Israel broadens UAV use with advanced designs". Flight International. Retrieved 2008-02-24.
- "Eitan: Israel develops the world's largest UAV". domain-b (Navi Mumbai: The Information Company). 24 January 2007. Retrieved 2009-02-24.
- "Heron TP". Israel Aerospace Industries. Retrieved 2009-02-24.
- "IAI Heron TP Eitan". Jane's Unmanned Aerial Vehicles and Targets. Jane's Information Group. 2 October 2007. Retrieved 2007-02-24.
- "IAI's Heron TP UAV sets new technological and operational records". domain-b (Navi Mumbai: The Information Company). 10 September 2008. Retrieved 2009-02-24.
- Opall-Rome, Barbara (25 October 2007). "Israel To Improve UAV Force". Defense News.
- Opall-Rome, Barbara (7 July 2008). "Israel AF Hones Manned-UAV Mix". Defense News. Retrieved 2009-02-24.
- Eshel, Tamir (21 February 2010). Israel's Third UAV Squadron to Operate 'Strategic UAV'. Retrieved 2010-02-22.
- Eshel, Tamir (20 July 2007). Israel's Heron TP (Eitan). Retrieved 2010-02-22.
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