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Lun (Ekranoplan)


Ground Effect Flying Boat / Anti-Ship Warfare Aircraft (1987)


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The massive Lun Ekranoplan was one of the most unique aircraft designs of the Cold War years - it remains available to the modern Russian fleet.



Authored By: Staff Writer | Last Edited: 10/24/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
One of the more interesting of the Cold War aircraft developments became the massive Soviet Lun Ekranoplan (NATO codename of "Duck"), a flying boat of sorts designed around the use of turbojet propulsion, ground effect physics and a boat-like airframe hull. The design intent was a sea-skimming transport vehicle for the Soviet Navy armed with anti-ship missiles and cannon to counter the threat of Western surface fleet interference. The Lun entered service in 1987 - just prior to the collapse of the Soviet Empire in 1991 - and was built in just one production-quality example as the "MD-160". The MD-160 began operational service with the Black Sea Fleet with its design attributed to engineer Rostislav Evgenievich Alexseev.

Ground effect allowed designers to utilize the inherent reaction of a winged airframe with the naturally occurring forces found near the surface of the earth. In effect, the aircraft was designed to skin the surface as if a hovercraft, though achieving greater altitudes. Ground effect allows an aircraft to utilize lower lift-dependent drag and, theoretically, provide greater efficiency in its forward momentum. The Lun Ekranoplan became an excellent example of this achievable principle though its kind has yet to find widespread use.

Externally, the Lun was a mix of boat and aircraft, showcasing a very bow-like fuselage with straight, mid-mounted wing appendages (capped by pontoons), a single vertical tail fin mounting a pair of swept-back horizontal planes in a "T" style arrangement and a forward-set flight deck. No fewer than 8 x Kuznetsov NK-87 series turbojet engines were fitted, these along the forward section of the fuselage just aft of the cockpit, and set as two groups of four engines each. As such, the engines could cleanly aspirate from the front in the usual manner and exhaust aft, over the main wing assemblies. The engine arrangement netted a thrust output of 28,000lbs each, propelling the Lun at speeds equaling 342 miles per hour over water. Operational range was 1,200 miles (1,000 nautical miles) with the vehicle crewed by fifteen including six officers. The Lun was designed to haul up to 220,000lbs to 300,000lbs of goods in its deep boat-like hull. The nose housed a Puluchas search radar suite.
The Lun Ekranoplan sported an overall length of 242 feet with a wingspan of 144 feet and height to tail top of 63 feet - making her one of the largest operational "aircraft" ever completed. On empty, the system weighed in at 630,500lbs and held a maximum take-off weight of 837,700lbs. Cruising speeds were in the vicinity of 280 miles per hour. When making headway, the Lun Ekranoplan reached heights of 16 feet from the surface of the water and measured a listed overall operating altitude of 24,600 feet.

While built as a transport, the Lun was appropriately armed with 6 x SS-N-22 series "Sunburn" anti-ship missiles fitted to six launchers angled over the fuselage in fixed positions and arranged inline in three pairings (Sunburn missiles were eventually adopted by the navies of China, India and Iran in time). Tracking and engagement facilities were housed in the nose section as well as the tail unit. The crew could also call upon 2 x 23mm PI-23 powered turrets (4 x total cannons) for direct-fire support against incoming aerial and surface threats. One turret was fitted ahead of the missile launchers and the other fitted in the tail.

Beyond the sole MD-160, a second Lun Ekranoplan was under construction at some point (as a quick-reaction, mobile field hospital also for the Soviet Navy). Though nearly completed, this unit was never made operational during the period prior to the fall of the Soviet Empire. It was revived to an extent after a review in 2007. As such, this second unit may well see the light of day in the coming years. The original MD-160 can still be operated is called upon though it remains inactive at the Kaspiysk naval facility in the Caspian Sea.

Specifications



Service Year
1987

Origin
Soviet Union national flag graphic
Soviet Union

Status
RETIRED
Not in Service.
Crew
15

Production
1
UNITS


Central Hydrofoil Design Bureau - Soviet Union
National flag of Russia National flag of the Soviet Union Russia; Soviet Union
(OPERATORS list includes past, present, and future operators when applicable)
Special-Mission: Anti-Ship
Equipped to search, track, and engage enemy surface elements through visual acquisition, radar support, and onboard weaponry.
Maritime / Navy
Land-based or shipborne capability for operating over-water in various maritime-related roles while supported by allied naval surface elements.
X-Plane (Developmental, Prototype, Technology Demonstrator)
Aircraft developed for the role of prototyping, technology demonstration, or research / data collection.


Length
242.1 ft
(73.80 m)
Width/Span
144.4 ft
(44.00 m)
Height
63.0 ft
(19.20 m)
Empty Wgt
630,522 lb
(286,000 kg)
MTOW
837,757 lb
(380,000 kg)
Wgt Diff
+207,235 lb
(+94,000 kg)
(Showcased structural values pertain to the Lun MD-160 production variant)
Installed: 8 x Kuznetsov NK-87 turbojet engines developing 28,600lb of thrust each.
Max Speed
342 mph
(550 kph | 297 kts)
Ceiling
24,606 ft
(7,500 m | 5 mi)
Range
1,243 mi
(2,000 km | 3,704 nm)


♦ MACH Regime (Sonic)
Sub
Trans
Super
Hyper
HiHyper
ReEntry
RANGES (MPH) Subsonic: <614mph | Transonic: 614-921 | Supersonic: 921-3836 | Hypersonic: 3836-7673 | Hi-Hypersonic: 7673-19180 | Reentry: >19030


(Showcased performance specifications pertain to the Lun MD-160 production variant. Compare this aircraft entry against any other in our database. View aircraft by powerplant type)
6 x fixed SS-N-22 Sunburn anti-ship missile launchers over the fuselage spine.
2 x 23mm PI-23 twin-barreled anti-aircraft cannons


Supported Types


Graphical image of an aircraft automatic cannon
Graphical image of an aircraft anti-ship missile


(Not all ordnance types may be represented in the showcase above)
Hardpoint Mountings: 0


Lun Ekranoplan - Base Series Class Designation
MD-160 - Single Production Model Designation


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