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Sukhoi Su-24

Su-24
Su-24M of the Russian Air Force in May 2009
Role All-weather attack aircraft
Manufacturer Sukhoi
Designer Ye. S. Felsner from 1985 – L.A. Logvinov[1]
First flight T-6: 2 July 1967
T-6-2I: 17 January 1970
Introduction 1974
Status In service
Primary users Russian Air Force
Ukrainian Air Force
Kazakh Air Force
Islamic Republic of Iran Air Force
Produced 1967–1993[1]
Number built Approximately 1,400
Unit cost
US$24–25 million in 1997[2]

The Sukhoi Su-24 ([1] It remains in service with former Soviet air forces and various air forces to which it was exported.

Contents

  • Development 1
    • Background 1.1
    • Design phase 1.2
    • Upgrades 1.3
  • Design 2
  • Operational history 3
    • Soviet War in Afghanistan 3.1
    • Lebanese civil war 3.2
    • Operation Desert Storm 3.3
    • Tajik and Afghan civil wars 3.4
    • Second Chechen War 3.5
    • 2008 South Ossetia War 3.6
    • 2011 Libyan civil war 3.7
    • Syrian civil war 3.8
      • 2015 Russian military intervention in Syria 3.8.1
    • 2014 Ukrainian conflict 3.9
  • Variants 4
  • Operators 5
    • Former 5.1
  • Notable accidents 6
  • Specifications (Su-24MK) 7
  • See also 8
  • References 9
  • Further reading 10
  • External links 11

Development

Background

One of the conditions for accepting [1] That same year, the United States proposal for their new all-weather strike fighter would be the TFX. The resulting F-111 would introduce a variable-geometry wing for greatly increased payload, range, and low-level penetration capabilities.

In 1962–1963, Sukhoi initially set out to build an aircraft without the complexity of moving wings like the F-111.[4] It designed and built a mockup of S-6, a delta wing aircraft powered by two Tumansky R-21F-300 turbojet engines and with a crew of two in a tandem arrangement. The mockup was inspected but no further work was ordered due to lack of progress on the Puma hardware.[3]

In 1964, Sukhoi started work on S-58M. The aircraft was supposed to represent a modification of the Sukhoi Su-15 interceptor (factory designation S-58). In the meantime, revised Soviet Air Force requirements called for a low-altitude strike aircraft with STOL capability. A key feature was the ability to cruise at supersonic speeds at low altitude for extended periods of time in order to traverse enemy air defenses.[3] To achieve this, the design included two Tumansky R-27F-300 afterburning turbojets for cruise and four Kolesov RD-36-35 turbojets for STOL performance. Side-by-side seating for the crew was implemented since the large Orion radar antennas required a large frontal cross-section.[3] To test the six-engine scheme, the first Su-15 prototype was converted into S-58VD flying laboratory which operated in 1966–1969.[3]

Design phase

T-6-1

The aircraft was officially sanctioned on 24 August 1965 under the internal codename T-6. The first prototype, T-6-1 was completed in May 1967 and flew on 2 July with Vladimir Ilyushin at the controls.[3] The initial flights were performed without the four lift engines, which were installed in October 1967. At the same time, R-27s were replaced with Lyulka AL-21Fs. STOL tests confirmed the data from S-58VD that short-field performance was achieved at the cost of significant loss of flight distance as the lift engines occupied space normally reserved for fuel, loss of under-fuselage hardpoints, and instability during transition from STOL to conventional flight.[3] So the six-engine approach was abandoned.

By 1967, the F-111 had entered service and demonstrated the practical advantages and solutions to the technical problems of a swing-wing design. On 7 August 1968, the OKB was officially tasked with investigating a [1][3] The resulting design was slightly smaller and shorter ranged than the F-111 with a range of 3000 km (about 2000 miles) and payload of 8000 kg (about 18,000 lb).

A pair of Russian Su-24Ms in flight (2009).

The first production aircraft flew on 31 December 1971 with V.T. Vylomov at the controls, and on 4 February 1975, T-6 was formally accepted into service as the Su-24.[3] About 1,400 Su-24s were produced.

Upgrades

Surviving Su-24M models have gone through a life-extension and updating program, with GLONASS, upgraded cockpit with multi-function displays (MFDs), HUD, digital moving-map generator, Shchel helmet-mounted sights, and provision for the latest guided weapons, including R-73 (AA-11 'Archer') air-to-air missiles. It is unclear if the Su-24MR and Su-24MP will receive the cockpit and navigation upgrades. The upgraded aircraft are designated Su-24M2.

Design

Su-24M in flight in 2009

The Su-24 has a shoulder-mounted variable geometry wing outboard of a relatively small fixed wing glove, swept at 69°. The wing has four sweep settings: 16° for take-off and landing, 35° and 45° for cruise at different altitudes, and 69° for minimum aspect ratio and wing area in low-level dashes. The variable geometry wing provides excellent STOL performance, allowing a landing speed of 230 km/h (143 mph), even lower than the Sukhoi Su-17 despite substantially greater take-off weight. Its high wing loading provides a stable low-level ride and minimal gust response.

The Su-24 has two Saturn/Lyulka AL-21F-3A afterburning turbojet engines with 109.8 kN (24,700 lbf) thrust each, fed with air from two rectangular side mounted intakes with splitter plates/boundary-layer diverters.

In early Su-24 ("Fencer A" according to NATO) aircraft these intakes had variable ramps, allowing a maximum speed of 2,320 km/h (1,440 mph), Mach 2.18, at altitude and a ceiling of some 17,500 m (57,400 ft). Because the Su-24 is used almost exclusively for low-level missions, the actuators for the variable intakes were deleted to reduce weight and maintenance. This has no effect on low-level performance, but absolute maximum speed and altitude are cut to Mach 1.35 and 11,000 m (36,100 ft).[5] The earliest Su-24 had a box-like rear fuselage, which was shortly changed in production to a rear exhaust shroud more closely shaped around the engines in order to reduce drag. The revised aircraft also gained three side-by-side antenna fairings in the nose, a repositioned braking chute, and a new ram-air inlet at the base of the tail fin. The revised aircraft were dubbed "Fencer-B" by NATO, but did not merit a new Soviet designation.

An Su-24 in flight (2009).

The Su-24's fixed armament is a single fast-firing GSh-6-23 cannon with 500 rounds of ammunition, mounted in the fuselage underside. The gun is covered with an eyelid shutter when not in use. The warload includes various nuclear weapons. Two or four R-60 (NATO AA-8 'Aphid') infrared missiles are usually carried for self-defense by the Su-24M/24MK.[6]

Initial Su-24s had basic electronic countermeasures (ECM) equipment, with many Su-24s limited to the old Sirena radar-warning receiver with no integral jamming system. Later-production Su-24s had more comprehensive radar warning, missile-launch warning, and active ECM equipment, with triangular antennas on the sides of the intakes and the tip of the vertical fin. This earned the NATO designation "Fencer-C", although again it did not have a separate Soviet designation. Some "Fencer-C" and later Su-24M ("Fencer-D" by NATO) have large wing fence/pylons on the wing glove portion with integral chaff/flare dispensers; others have such launchers scabbed onto either side of the tail fin.

Operational history

Substantial numbers of ex-Soviet Su-24s remain in service with Azerbaijan, Kazakhstan, Russia, and Ukraine. In 2008, roughly 415 were in service with Russian forces, split 321 with the Russian Air Force and 94 with the Russian Navy.[7]

The Russian Air Force will eventually replace the Su-24 with the Sukhoi Su-34.[8]

Soviet War in Afghanistan

The Soviet Union used some Su-24s in the Soviet war in Afghanistan, starting from 1984.

Lebanese civil war

On October 13, 1990, Syrian Air Force jets entered Lebanese air space in order to strike General Michel Aoun's military forces. Seven Su-24 jets were used in this operation.[9]

Operation Desert Storm

During Operation Desert Storm, the Iraqi Air Force evacuated 24 of its 30 Su-24MKs to Iran. Another five were destroyed on the ground, while the sole survivor remained in service after the war.

Tajik and Afghan civil wars

Fencers were used by the Uzbek Air Force (UzAF) against Islamist and opposition forces operating from Afghanistan (which also had a civil war of its own going on), as part of a wider air campaign in support of the embattled government of Tajikistan during the 1992–97 civil war. An Su-24M was shot down on 3 May 1993 with an FIM-92 Stinger MANPADS fired by fundamentalists. Both Russian crew members were rescued.[10][11]

In August 1999 Tajikistan protested over an alleged strike involving four UzAF Su-24s against Islamist militants in areas close to two mountain villages in the Jirgatol District that, despite not producing human casualties, killed some 100 head of livestock and set ablaze several crop fields. Tashkent denied the accusations.[12]

In the final stages of the 1996-2001 phase of the Afghan civil war, Uzbekistan launched airstrikes against Taliban positions in support of the Northern Alliance. During a mission to attack a Taliban armoured infantry unit near Heiratan, an UzAF Su-24 was shot down on 6 June 2001, killing both crew members.[13][14]

Second Chechen War

Su-24s were used in combat during the Second Chechen War performing bombing and reconnaissance missions. Up to four were lost, one due to hostile fire.

On 4 October 1999, a Su-24 was shot down by a SAM while searching for the crash site of a downed Su-25. The pilot was killed while the navigator was taken prisoner.

2008 South Ossetia War

In August 2008, a low intensity conflict in the breakaway Georgian regions of Ossetia and Abkhazia, escalated to

  • Su-24 page on Sukhoi's site
  • Su-24 page on Airforce-Technology.com
  • Su-24 page on AerospaceWeb.org
  • Su-24 page on militaryfactory.com

External links

  • Air Forces Monthly, September 2015 (Iranian Su-24 force)

Further reading

  • Antonov, Vladimir, et al. Okb Sukhoi: A History of the Design Bureau and Its Aircraft. Leicester, UK: Midland, 1996. ISBN 1-85780-012-5.
  • Wilson, Stewart. Combat Aircraft since 1945. Fyshwick, Australia: Aerospace Publications, 2000. ISBN 1-875671-50-1.
Bibliography
  1. ^ a b c d e f g h i j k
  2. ^ "Military aircraft prices." aeronautics.ru. Retrieved: 5 March 2011.
  3. ^ a b c d e f g h i j k l m "Sukhoi Su-24 history." sukhoi.org, 15 April 2007. Retrieved: 28 January 2011.
  4. ^
  5. ^ "Su-24M Fencer Front-Line Bomber, Russia." airforce-technology.com. Retrieved: 5 March 2011.
  6. ^
  7. ^ "Directory: World Air Forces". Flight International, 11–17 November 2008.
  8. ^ "SU-34 Fullback." Defense Update, 27 October 2006. Retrieved: 5 March 2011.
  9. ^ "SU-24 over Baabda area."Retrieved: 14 October 2015.
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  14. ^ "Russia opens way for US attack" Flight Global, 2 October 2001. Retrieved: 23 December 2014.
  15. ^ "Russia trains its missiles on Tbilisi." The Australian,19 August 2008. Retrieved: 24 December 2011.
  16. ^ Schwirtz, Michael, Anne Barnard and Andrew E. Kramer. "Russian Forces Capture Military Base in Georgia." The New York Times, 12 August 2008. Retrieved: 24 December 2011.
  17. ^ a b "Libya conflict." CNN. Retrieved: 5 March 2011.
  18. ^ "Libya Live Blog – March 6." Al Jazeera, 6 March 2011. Retrieved: 26 July 2011.
  19. ^ Simpson, John. "Libya: Gaddafi fighter bomber is shot down in Ras Lanuf." BBC, 5 March 2011. Retrieved: 26 July 2011.
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  33. ^ a b c d Antonov et al. 1996.
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  36. ^ http://red-stars.org/spip.php?article80
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  41. ^ "Iran Su-24 tests anti-radar missile." airforceworld.com, Sept 2011. Retrieved: 5 Oct 2011.
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  43. ^ The Military Balance 2012, p. 200.
  44. ^ http://mil.in.ua/bombarduvalnyky/su-24
  45. ^ a b
  46. ^ a b http://www.flightglobal.com/airspace/media/reports_pdf/world-air-forces-2013-101015.aspx
  47. ^ http://www.flightglobal.com/airspace/media/reports_pdf/world-air-forces-2014-108161.aspx
  48. ^
  49. ^ "Iraqi Perspectives Project Phase II. Um Al-Ma'arik (The Mother of All Battles): Operational and Strategic Insights from an Iraqi Perspective, Volume 1 (Revised May 2008)." oai.dtic.mil. Retrieved: 5 March 2011.
  50. ^ http://www.dutchaviationsupport.eu/Articles/kadex.pdf
  51. ^ "Russia Su-24M bomber crashes in southwest Russia, pilots safely eject." rian.ru, 19 December 2008. Retrieved: 5 March 2011.
  52. ^ "Defense Su-24 Bomber Crashes in Urals – No Casualties." rian.ru, 13 February 2012. Retrieved: 13 February 2012.
  53. ^
  54. ^ http://voiceofrussia.com/news/2014_03_22/Ukrainian-Air-Force-bomber-Su-24-crashes-during-approach-for-landing-4837/
  55. ^ http://www.foxnews.com/world/2014/10/13/algerian-military-plane-crashes-during-exercise-killing-2/
  56. ^ http://www.themoscowtimes.com/business/article/russia-grounds-2nd-fighter-jet-fleet-amid-string-of-catastrophes/525155.html
  57. ^ Wilson 2000, p. 130.
Notes

References

Aircraft of comparable role, configuration and era

See also

  • 1 × onboard 23 mm GSh-6-23 cannon, 500 rounds of ammunition.
  • Up to 8,000 kg (17,640 lb) ordnance on 8 hardpoints, including up to 4 × Kh-23/23M radio-command missiles; up to 4 × Kh-25ML laser-guided missiles; up to 2 × Kh-28, Kh-58E or Kh-58E-01 or Kh-31P ARMS; up to 3 × Kh-29L/T laser/TV-guided short-range air-to-surface missiles; up to 2 × Kh-59 or Kh-59ME TV-command guided missiles, Kh-31A anti-ship missiles, S-25LD laser-guided missiles, KAB-500KR TV-guided and KAB-500L laser guided bombs.
  • Unguided rocket launchers with 240 mm S-24B rockets or 340 mm S-25-OFM rockets.
  • Other weapon options include general-purpose bombs AB-100, AB-250 M54 or M62 and AB-500M-54, thermobaric bombs ODAB-500M, cluster bombs RBK-250 or RBK-500, small-size cargo pods KMGU-2, external gun pods SPPU-6, external fuel tanks PTB-2,000 (1,860 l) or PTB-3,000 (3,050 l) and tactical nuclear bombs.
  • 2 × R-60 or R-60MK air-to-air missiles are normally carried for self-defense; upgraded aircraft can carry R-73E as well.

Armament

Performance

  • Crew: Two (pilot and weapons system operator)
  • Length: 22.53 m (73 ft 11 in)
  • Wingspan: 17.64 m extended, 10.37 m maximum sweep (57 ft 10 in / 34 ft 0 in)
  • Height: 6.19 m (20 ft 4 in)
  • Wing area: 55.2 m² (594 ft²)
  • Empty weight: 22,300 kg (49,165 lb)
  • Loaded weight: 38,040 kg (83,865 lb)
  • Max. takeoff weight: 43,755 kg (96,505 lb)
  • Powerplant: 2 × Saturn/Lyulka AL-21F-3A turbojets
    • Dry thrust: 75 kN (16,860 lbf) each
    • Thrust with afterburner: 109.8 kN (24,675 lbf) each
  • Fuel capacity: 11,100 kg (24,470 lb)
General characteristics

Data from Sukhoi,[3] Combat Aircraft since 1945[57]

Sukhoi Su-24MR at Kubinka airbase

Specifications (Su-24MK)

  • On 19 December 2008, a Russian Air Force Su-24M crashed near the southwest Russian city of Voronezh. The crew members ejected. Preliminary information indicates the crash was caused by a malfunction in the aircraft's flight control system.[51]
  • On 13 February 2012, a Russian Air Force Su-24 crashed in Kurgan region. Both crew members ejected safely. Engine failure was stated as the probable cause of the crash.[52]
  • On 30 October 2012, a Russian Air Force Su-24M crashed in Chelyabinsk Oblast, Russia. During the flight the nose cone fractured. After attempting an emergency landing, the crew of two flew to open territory and safely ejected. A regional government website stated that emergency was result of aircraft control system failure. Flights of Su-24 were suspended at the Shagol base.[53]
  • On 21 March 2014, a Ukrainian Air Force Su-24M belonging to the 7th Brigade crashed during approach for landing near Starokonstantinov in the Khmelnitsky region, Ukraine. Both crew members ejected safely.[54]
  • On 13 October 2014, an Algerian Air Force Su-24 crashed during a training flight killing both crew members[55]
  • On 6 July, 2015, a Russian Air Force Su-24 crashed outside of Khabarovsk in Russia's Far East killing both crew members. [56]

Notable accidents

 Uzbekistan
[46]
 Angola
[46]
 Azerbaijan
[47]
 Belarus
Inherited from the Soviet Union, 34 served with the Belarusian Air Force, consisting of 22 Su-24Ms and 12 Su-24MRs. All were retired from Belarusian service in 2012,[48] with up to 12 transferred to Sudan in 2013 together with ground support.[45]
 Iraq
30 delivered to the Iraqi Air Force, five destroyed in the 1991 Persian Gulf War, one survived in Iraq and 24 were evacuated to Iran where they were pressed into service with the Islamic Republic of Iran Air Force.[49]
 Kazakhstan
Kazakh Air and Air Defence Forces [50]
 Libyan Arab Jamahiriya
6 Su-24MKs purchased for the Libyan Air Force. Two were transferred to Syria. Out of the four planes, two were in operational condition as of February 2011, one being shot down in March 2011 at the beginning of the 2011 Libyan Civil War.[17] The remaining three Su-24s (one operational and two not operational) were likely destroyed on the ground at Ghardabiya Air Base, by coalition aircraft on 20 March 2011, during the initial phase of Operation Odyssey Dawn.
 Soviet Union
Passed on to successor states.

Former

 Syria
Syrian Arab Air Force – 22 received. 20 Su-24MKs from the Soviet Union, 1 Su-24MK and 1 Su-24MR from Libya. 20 were in service in January 2013.[40] All the Su-24MKs have been upgraded to Su-24M2 standard, between 2009 and 2013. The contract for that was signed in 2009 and the upgrade started in 2010.
 Ukraine
Ukraine Air Force received 120 Su-24s. Only 25 were in service, 95 were in storage. [44]
 Sudan
Up to twelve, ex-Belarusian Air Force Su-24s were transferred to Sudan Air Force in 2013.[45]
 Algeria
Algerian Air Force – 34 Su-24MKs, some upgraded to the M2 standard. 4 Su-24MRs.[36][37][38][39]
 Iran
Islamic Republic of Iran Air Force – 30 Su-24MKs were in service as of January 2013.[40] 24 Iraqi examples were evacuated to Iran during the 1991 Gulf War and were put in service with the IRIAF. Iran possibly, purchased other Su-24s from Russia or other, former Soviet States. Iran tested domestically produced, anti-radar smart missiles carried by Su-24 aircraft in September 2011, the IRIAF's Deputy Commander, General Mohammad Alavi said, according to IRINN TV.[41]
 Russia
An Su-24MR of the Ukrainian Air Force.
An IRIAF Su-24MK.
An Su-24M of the Belarusian Air Force.
An Su-24M2 of the Russian Air Force.
Su-24 operators as of 2015.

Operators

Source: Sukhoi[3]
S6[33]
An early project in the gestation of the Su-24, like a meld of the Su-7 and Su-15.[33]
T6-1
The initial prototype with cropped delta wings and 4 RD-36-35 lift engines in the fuselage.[33]
T6-2I / T6-3I / T6-4I
Prototypes for the variable geometry Su-24 production aircraft.[33]
Su-24
The first production version, the armaments include Kh-23 and Kh-28 type air-to-ground guided missiles, together with R-55 type air-to-air guided missiles.[1] Manufactured 1971–1983.
Su-24M ('Fencer-D')
Work on upgrading the Su-24 was started in 1971, and included the addition of [1]
Su-24M2 ('Fencer-D')
Next modernization of Su-24M introduced in 2000 with the “Sukhoi” program and in 1999 with the “Gefest” program. The modernized planes are equipped with new equipment and systems. As a result, they get new capabilities and improved combat efficiency, including new navigation system (SVP-24), new weapons control system, new HUD (ILS-31, like in Su-27SM or KAI-24) and expanding list of usable munitions (Kh-31A/P, Kh-59MK, KAB-500S). The last batch of the Sukhoi was delivered to the Russian VVS in 2009.[34] Modernization continues with the program “Gefest”. All frontline bombers Su-24 in the Central Military District received new sighting and navigation systems SVP-24 in 2013.[35]
Su-24MK ('Fencer-D')
Export version of the Su-24M with downgraded avionics and weapons capabilities. First flight 30 May 1987 as T-6MK, 17 May 1988 as Su-24MK. Manufactured 1988–1992, sold to Algeria, Iran, Iraq, Libya, and Syria.
Su-24MR ('Fencer-E')
Dedicated tactical [1]
Su-24MP ('Fencer-F')
Dedicated electronic signals intelligence ([1]

Variants

In late May 2015, a pair of Russian Fencers made a low pass over the USS Ross in the Black Sea.[32]

Initially identified as a Su-25, on 20 August 2014 a Ukrainian Su-24M was shot down by pro-Russian forces in the Lugansk region and confirmed by Ukrainian authorities who reported that the crew members ejected safely and were recovered.[29][30] On 21 August 2014, the downed plane was identified as a Su-24M.[31]

On 2 July 2014, one Ukrainian Air Force Su-24 was damaged by MANPADS fired by pro-Russian forces. One of the engines was damaged, but the crew managed to return to base and land. During landing a new fire started but it was extinguished by the ground crew.[28]

2014 Ukrainian conflict

The Russian air force’s long-range striking power in the region comes from the twelve Su-24M2 Fencer jets that Russia has sent to its base in Latakia, Syria.[27]

2015 Russian military intervention in Syria

On September 23, 2014, a Syrian Su-24 was shot down by an Israeli Air Defense Command MIM-104D Patriot missile near Quneitra, after it had penetrated 800 meters into Israeli controlled airspace over the Golan Heights.[24] The missile hit the aircraft when it already re-entered into the Syrian air space.[25] Both crew members ejected safely and landed in Syrian territory.[26]

Syrian Fencers have reportedly also been involved in near-encounters with NATO warplanes. The first of such incidents occurred in early September 2013, when Syrian Fencers of the 819th Squadron (launched from Tiyas airbase) flew low over the Mediterranean and approached the 14-mile air exclusion zone surrounding the British airbase in Akrotiri, Cyprus. The jets turned back before reaching the area due to two RAF Eurofighter Typhoons being scrambled to intercept them. Turkey also sent two F-16s. The Fencers were possibly testing the air defenses of the base (and their reaction time) in preparation for a possible military strike by the U.S, the United Kingdom and France in the aftermath of the chemical weapons attack in Ghouta, Damascus allegedly committed by the Syrian government.[22][23]

Starting in November 2012, 18 months after the beginning of the Syrian Civil War and four months after the beginning of air raids by fixed-wing SAF aircraft, Su-24 medium bombers were filmed attacking rebel positions.[20] The SAF suffered its first Su-24 loss, an upgraded MK2 version, to an Igla surface-to-air missile on 28 November 2012 near the town of Darat Izza in the Aleppo Governorate. One of the crew members, Col. Ziad Daud Ali, was injured and filmed being taken to a rebel field hospital.[21]

Syrian civil war

During the 2011 Libyan civil war, on 5 March 2011, rebels shot down a Libyan Air Force Su-24MK during fighting around Ra's Lanuf with a ZU-23-2 antiaircraft gun. Both crew members died. A BBC reporter was on the scene soon after the event and filmed an aircraft part at the crash site showing the emblem of the 1124th squadron, flying the Su-24MK.[17][18][19]

2011 Libyan civil war

[16]

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