Denel Rooivalk

Rooivalk
A Denel Rooivalk in flight
Role	Attack helicopter
National origin	South Africa
Manufacturer	Denel Aviation
First flight	11 February 1990
Introduction	1 April 2011
Status	Out of production and in service
Primary user	South African Air Force
Produced	1990–2007
Number built	15
Developed from	Aérospatiale SA 330 Puma

TheDenel Rooivalk(previously designatedAH-2andCSH-2) is anattack helicoptermanufactured byDenel Aviationof South Africa.RooivalkisAfrikaansfor "RedFalcon",which refers to thelesser kestrel.Development of the type began in 1984 by theAtlas Aircraft Corporation,its development is closely connected to theAtlas Oryxtransport helicopter, both aircraft being based on theAérospatiale SA 330 Pumaand having started development at the same time.

Development of the Rooivalk was protracted due to the impact of limited budgets during the 1990s, and a desire to produce a highly advanced attack helicopter. TheSouth African Air Force(SAAF) ordered 12 Rooivalk, designated theRooivalk Mk 1in SAAF service, the first of which were officially handed over in April 2011.The helicopters are flown by16 Squadron,based atAFB BloemspruitnearBloemfontein.

Development

Origins

The Rooivalk project began in early 1984 under the auspices of theAtlas Aircraft Corporation,a predecessor ofDenel Aviation.Faced with the increasingly conventional nature of theSouth African Border War,the South African Defence Force recognised the need for a dedicated attack helicopter and began developing a suitable aircraft. The helicopter was to escort helicopter troop transports, conduct strike missions uponanti-aircraft positions,and effectively counter the increasing presence ofSoviettanks; in the latter role, it was to be equipped withanti-tank missiles.At the time, South Africa was under anarms embargoenacted byUnited Nations Security Council Resolution 418due to its policy ofapartheid,which prevented foreign combat helicopters from being imported.

Developing an entirely new helicopter from scratch would have involved designing and developing many accompanying subsystems and components, such as theturboshaftengines and the dynamic systems, such as the main and tailrotor systemsand thegearboxes.Due to the great difficulty posed by the prospects of designing and manufacturing a clean-design helicopter, which would have substantially increased the cost and timescale of the project, it was decided to base the attack helicopter upon an existing design. At the time, the SAAF operated two principal helicopter types – theAérospatiale Alouette IIIand theAérospatiale SA 330 Puma.The Alouette III was a small helicopter which originated from the 1960s; due to the age of the design and a lack of engine power, it was not considered a favourable candidate for further development work.

The Puma was substantially larger and was equipped with more powerful engines; both factors provided a broader basis for the accommodation of additional equipment and for potential growth.Another key factor for its selection was the parallel development of a localised and improved model of the Puma in South Africa, known as theAtlas Oryx.The Oryx possessed an increasedpower-to-weight ratioand had improved performance in the high temperature climate that the type was typically being operated in; development of the Oryx was far quicker than what would become the Rooivalk as it was a more straightforward program.Other potential sources were mooted, such as the use of propulsion elements of theAérospatiale SA 365 Dauphin;the adoption of these components has been speculated to have likely resulted in a smaller and potentially more economic rotorcraft.

Ultimately, it was decided to adopt both the powerplant and dynamic systems of the Oryx—which bore significant similarities to their Puma andAérospatiale AS332 Super Pumaancestors—as the basis for the planned attack helicopter; commonality with the Oryx systems would simplify logistics and reduce maintenance costs.This meant that the attack helicopter would have a significantly large airframe, giving it long range and the capability to carry many sensors and armaments. During the 1980s, the defence budgets of South Africa were relatively generous, especially in contrast to later decades, thus Denel sought to provide a rotorcraft that would be amongst, even potentially superior to, the best attack helicopters in the world.The helicopter, later named the Rooivalk, was envisioned as an agile, highly sophisticated gunship, especially suited to the threats of theAngolan theatreand countering vehicles such as theT-55tank.

TheAtlas XH-1 Alphawas the first prototype to emerge from the program.It was developed from an Alouette III airframe, retaining that helicopter's engine and dynamic components; modifications included the replacement of the original cockpit with a steppedtandemcounterpart, the addition of a 20 mm cannon on the nose and the conversion of the undercarriage to a tail-dragger configuration. On 3 February 1985, the XH-1 conducted itsmaiden flight.The results of flight tests of the XH-1 were ultimately good enough to convince both Atlas and the SAAF that the concept was feasible, opening the door to proceed with the development of the Rooivalk.

Into flight

A Rooivalk at theFarnborough Airshowin 1994

The prototype first flew on 11 February 1990,by which time the program had suffered a considerable setback.Some of the program's ailments were a consequence of the ambition to produce a world-leading attack helicopter; while a simpler aircraft may have been completed during the 1980s, allowing it to possibly enter service around the same time as the Oryx, the Rooivalk instead suffered from a highly extended development time. In 1988, the Border War came to a close, which soon led to substantial cuts in the defence budget. The planned attack helicopter acquisition was cut from 36 rotorcraft to only 12, greatly affecting theeconomies of scale.In pursuit of a high-end system, the cost of the program in comparison to a simpler attack helicopter were driven upwards, although the increases were never in excess of the allotted budget between 1984 and 1990.

It has been claimed that some SAAF officials were of the viewpoint that the Rooivalk was a direct threat to fixed-wing aircraft, particularly in light of the diminishing defence budget, and sought its termination.TheSouth African Armywere broadly supportive of the Rooivalk program, in part as the presence of South African attack helicopters would reduce the need for large numbers of tanks to be procured and maintained. The Army thus provided funding for the Rooivalk program for a time, helping it survive the tightening budgetary constraints. The delays and escalating costs of the project were a hindrance not only to its introduction but to its later viability.By 1998, the year in which the first production Rooivalk was delivered to the SAAF, the lengthy development time meant that the rotorcraft was already suffering from some alleged obsolescence issues; it was an aerodynamically sound aircraft but the avionics, while advanced for the 1980s, were relatively outdated, which harmed the type's export potential.

The topic of support for the rotorcraft was another decisive factor in prospective export sales.Beyond doubts present over the long term future of Denel and thus its ability to provide the necessary manufacturer support to operate the type, the Rooivalk relies extensively on French technology, presently owned byAirbus Helicopters;due to the Rooivalk being a rival to theEurocopter Tigerattack helicopter, the firm allegedly warned potential buyers that the necessary support for the aircraft's dynamic systems, which they provided, may not be forthcoming.Political factors had been attributed as a major hindrance on the export market, such as pressure allegedly exercised by theUnited Statesgovernment to persuade foreign customers to select the rivalBoeing AH-64 Apacheinstead.

Various potential export opportunities were investigated, such asMalaysia,theUnited Kingdom,andTurkey,however no such sales had emerged by 2013.The development of the Rooivalk had a positive effect on the development of the South African aviation and high technology industries, leading to the creation of firms such asAerosudandAdvanced Technologies and Engineering(ATE).The industrial impact of the Rooivalk program has been claimed to have enabled South African defence businesses to participate in other aerospace programs, such as theSaab JAS 39 Gripen,BAE Systems Hawk,AgustaWestland AW109,andAirbus A400M Atlas.

Further development

In 2016, Denel was reportedly proceeding with aMk 1.1upgrade program for the existing Rooivalk fleet; prospective improvements include the addition of amissile approach warning systemand enhancements to the rotorcraft's avionics.On 15 September 2016, it was announced that Airbus Helicopters and Denel had signed a memorandum of understanding to cooperate on the SAAF modernisation program; further details on the changes included reliability and survivability improvements, an increased payload, and the replacement of obsolete targeting systems and armaments.

In September 2014, Denel Group chief executive Riaz Saloojee stated that the firm were studying the feasibility of reopening the Rooivalk production line, which had been mothballed in 2007 after the production of the initial 12 SAAF aircraft. Saloojee stated that new production aircraft conforming to an entirely new platform that used Rooivalk technology could be produced.In September 2016, the South African government authorised government-to-government negotiations on the topic of restarting production of the Rooivalk. According to Victor Xaba, deputy chief executive of Denel Aerostructures, the company needed commitments for at least 70 rotorcraft for the re-establishment of the assembly line to be viable.

The production of a prospectiveRooivalk Mk 2had been periodically mooted.In July 2015, Saloojee spoke on the company's efforts to gain support for a Rooivalk Mk 2 programme which would involve a large proportion of new systems and for which the firm had already produced a roadmap.In late 2016, Denel stated that it was conducting a series of talks with various nations on the Rooivalk Mk 2, includingEgypt,Brazil,Nigeria,Poland,andIndia.

In 2023, Denel Aeronautics andAselsansigned an agreement to collaborate on the avionics upgrade of the Rooivalk.

Design

A Rooivalk atAFB Ysterplaatin Cape Town, South Africa

Due to the SAAF's decades of helicopter experience in the harsh African environment, the Rooivalk has been designed to operate for prolonged periods without sophisticated support. All that is needed to keep the Rooivalk flying is a medium transport helicopter equipped with a basic spares supply plus four groundcrew.

The Rooivalk carries a range of weapons depending on the mission profile. It is generally fitted with a nose-mounted 20 mm cannon and can also carry air-to-air missiles, anti-armour missiles and unguided rockets. The Rooivalk has a fire control system for target acquisition and tracking as well as an advanced navigation system usingDoppler radarand GPS. Also incorporated is an electronic countermeasures suite coupled with chaff and flare dispensers.The Rooivalk has a nose-mounted gyro-stabilised sensor turret housing with auto-tracking. The Rooivalk uses a Thales TopOwl helmet mounted display (also used by several other attack and transport helicopters around the world). The system was developed by Société de Fabrication d’Instruments de Mesure (SFIM) in 1999/2000.

Notable features include a tandem cockpit, starboard tail rotor with a port tailplane, a fixed wheeled undercarriage as well as wire cutters above and below the cockpit and on the undercarriage. The Rooivalk is capable of doing a loop and thus momentarily "flying upside down".

The following types of missions are foreseen for the Rooivalk:reconnaissance,heliborne escort,close air support,deep penetration, and anti-armour.

Operational service

Two SAAF Rooivalk Attack Helicopters serving as part of theUnited Nations Force Intervention Brigadeescorting a UN delegation in theDemocratic Republic of the Congo.

By April 2005, only six of the 12 aircraft were available for operational test and evaluation with the others in need of software upgrades. The Chief of the South African Air Force, Lt. Gen.Carlo Gagiano,hoped that the helicopters would be ready around June 2007, indicating the"extremely worrying factor of time that the project was taking to reach maturity",attributing the delays to the exodus of personnel from Denel as well as its financial problems. This has forced the SAAF to assess alternative defence development partners.

One airframe was damaged beyond repair on 3 August 2005 after an "uncontrolled landing".

On 17 May 2007, Denel group CEO Shaun Liebenberg announced a decisionto cease further development and funding for the Rooivalk as an export product following its failure to win the Turkish attack helicopter tenderagainst theAgusta A129 Mangusta.

During November 2007, Defence MinisterMosiuoa Lekotaannounced inParliament,that the SAAF was to invest R962 million (about US$137 million in 2007 exchange rates) in the helicopter over three years to 2010/2011, in order to bring it up to full operational status. The helicopter was expected to be deployed on peace-keeping duties as soon asinitial operating capabilityis achieved.

On 1 April 2011, the SAAF received the first five of eleven (one of the twelve aircraft originally delivered to the SAAF was written off after an accident) Block 1F upgraded Rooivalk. The upgrade involves improved targeting systems and other avionics which enable the helicopter to use guided missiles for the first time. TheMokopaATGMwas qualified as part of the upgrade process.Gearbox components were improved and cooling problems with the F2 20 mm cannon were also addressed.The ninth and tenth Rooivalk attack helicopters were delivered in September 2012 following their upgrade to the Block 1F initial operating standard.The eleventh and final Rooivalk was delivered on 13 March 2013.

South African Rooivalk Attack Helicopter overFIBbase inSake2014

Three Rooivalk attack helicopters have been deployed with theUnited Nations Force Intervention Brigadeto support theUnited Nations Organization Stabilization Mission in the Democratic Republic of the Congoin 2013.

On 4 November 2013, two Rooivalks with theUnited Nations Force Intervention BrigadefiredFZ 90 70mm FFARrockets onM23positions near Chanzu in the Democratic Republic of the Congo.

Operators

South Africa

• South African Air Force
  • 16 Squadron

Aircraft on display

The first prototype Rooivalk XDM, SAAF serial 683, is on static display at theSouth African Air Force Museum,Swartkop Air Force Base,Pretoria.

Specifications

Data fromJane's All The World's Aircraft, 2003–2004

General characteristics

• Crew:2 (pilot & weapon systems officer)
• Length:18.73 m (61 ft 5 in) overall

16.39 m (54 ft) fuselage only

• Height:5.19 m (17 ft 0 in)
• Empty weight:5,730 kg (12,632 lb)
• Gross weight:7,500 kg (16,535 lb)
• Max takeoff weight:8,750 kg (19,290 lb)
• Fuel capacity:1,854 L (490 US gal; 408 imp gal)
• Powerplant:2 ×Turbomeca Makila 1K2turboshaftengines, 1,420 kW (1,900 hp) each
• Main rotor diameter:× 15.58 m (51 ft 1 in)
• Main rotor area:190.6 m²(2,052 sq ft)
  
• Blade section:NACA 0015

Performance

• Cruise speed:278 km/h (173 mph, 150 kn) at sea level (max cruise)
• Never exceed speed:309 km/h (192 mph, 167 kn)
• Range:740 km (460 mi, 400 nmi) at sea level (max cruise)
• Ferry range:720 km (450 mi, 390 nmi) at 1,525 m (5,003 ft) (max external fuel)
• Service ceiling:6,100 m (20,000 ft)
• Rate of climb:13.3 m/s (2,620 ft/min)

Armament

• 1 ×F220 mmcannon,700 rounds
• 8 or 16 ×MokopaZT-6 long-rangeanti-tank guided missiles(ATGM)
• 4 ×MBDAMistralair-to-air missiles
• 38 or 76 × 70 mm rocketsfolding fin aerial rockets(FFAR) or Wrap-Around (WA) (FZ9070mm WA)
• FZ275 LGRLaser Guided Rocket

See also

Related development

• Atlas Oryx
• Atlas XH-1 Alpha

Aircraft of comparable role, configuration, and era

• Agusta A129 Mangusta
• AgustaWestland Apache
• Bell AH-1Z Viper
• Boeing AH-64 Apache
• CAIC Z-10
• Eurocopter Tiger
• HAL Prachand
• Harbin Z-19
• IAIO Toufan
• Kamov Ka-50
• Kawasaki OH-1
• Mil Mi-24
• Mil Mi-28
• Panha 2091
• TAI/AgustaWestland T129 ATAK

Related lists

• List of attack aircraft
• List of rotorcraft

External links

• Aircraft.co.za – Denel RooivalkArchived2017-11-07 at theWayback Machine
• Rooivalk Attack Helicopter, South Africa