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The Nord Noratlas, Transall C-160, & Alenia G222

v2.0.0 / 01 jul 13 / greg goebel / public domain

* Although cargolift aircraft don't have the glamor of fighters and bombers, they are still an important element in military operations, and have interesting features and history of their own. Three of the more important European cargolifter aircraft of the postwar period were the piston-powered French Nord "Noratlas"; plus its successors, the turboprop-powered Franco-German Transall "C-160", and the Italian Alenia "G222" . This document provides a history and description of the Noratlas, C-160, and G222.

Nord Noratlas


[1] NORD NORATLAS
[2] TRANSALL C-160
[3] AERITALIA G222
[4] ALENIA C-27A / C-27J
[5] COMMENTS, SOURCES, & REVISION HISTORY

[1] NORD NORATLAS

* In the late 1940s, the French SNCA du Nord company began work on a cargolifter to replace the Douglas C-47s and Junkers Ju-52s then in French service. The company came up with a design, the "Nord 2500", with dual piston engines and the twin-boom arrangement of the American Fairchild C-82 Packet cargolifter. The N-2500 was powered by two SNECMA-built Gnome-Rhone 14R radial engines with 1,195 kW (1,600 HP) each, and first flew on 10 September 1949.

The Nord 2500 prototype left something to be desired, and led to the improved "Nord 2501", powered by two SNECMA-built Bristol Hercules 738 or 758 radials with 1,520 kW (2,040 HP) each. The Nord 2501 first flew on 10 September 1949. It proved more satisfactory and the French air force, the Armee de l'Air (AA), ordered three pre-production examples of the type, with the first performing its initial flight on 10 September 1952. The AA followed up with an order for an initial production batch of 40 N-2501s, with the last of the batch delivered at the end of June 1954. The AA ordered further batches, ultimately obtaining a total of 200 N-2501s.

The Noratlas flew with a flight crew of four or five, and could carry 45 troops; 31 paratroops with drop gear; 18 stretchers with medical attendants; or 6,800 kilograms (14,900 pounds) of cargo. The AA N-2501s saw combat service in Algeria, and during the Suez conflict of 1956. A few remained in AA service into the 1970s.

   NORD N-2501 NORATLAS:
   _____________________   _________________   _______________________
 
   spec                    metric              english
   _____________________   _________________   _______________________

   wingspan                32.5 meters         106 feet 8 inches
   wing area               101.2 sq_meters     1,089 sq_feet
   length                  22 meters           72 feet 1 inch
   height                  6 meters            19 feet 8 inches

   empty weight            13,300 kilograms    28,670 pounds
   max loaded weight       22,000 kilograms    48,500 pounds

   max cruise speed        335 KPH             208 MPH / 181 KT
   service ceiling         7,500 meters        24,600 feet
   range                   2,500 kilometers    1,550 MI / 1,350 NMI
   _____________________   _________________   _______________________

* The West German Luftwaffe also adopted the Noratlas, beginning operations with the type in 1958. 25 were assembled in Germany from kits supplied by Nord, and 161 more were built in Germany -- the details of German construction are obscure, some sources claiming the work was done "Flugzeugbau Nord", a satellite firm set up in Germany by Nord specifically to build the Noratlas, while others claim it was done by a purely German firm named "Flugzeugwerke Nord". In any case, these aircraft were designated "N-2501D".

The Israelis bought 30 "N-2501IS" machines, generally similar to the standard N-2501. The Israelis were forced to buy their first batch of three Noratlas transports as a condition of a sale of twelve Dassault Ouragan fighters. The Israelis were unhappy at first about being pressured to buy the transports, but came to appreciate their usefulness. The Noratlas served Israel in the Suez conflict in 1956, the Six-Day War in 1967, and the Yom Kippur War in 1973. They were used not only for cargo transport and paratroop drop, but for maritime patrol. The Israeli machines were finally retired in 1978.

Portugal also bought 12 N-2501s. Used French and German aircraft were bought by Niger (4), Nigeria (6), Chad (10), and Greece (40). Some N-2501s remained in civilian service into the 1990s.

* Some other variants of the Noratlas were proposed or built in small numbers:

The "N-2505", N-2507", "N-2509", and "N-2510" were paper projects only, and never flew. Total Noratlas production came to 425 aircraft.

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[2] TRANSALL C-160

* The Nord Noratlas was a fine and useful aircraft, but of course there came a time when its users wanted something better as a replacement. In January 1959, this desire translated into the formation of the "Transporter Allianz (Transall)", a joint group formed of Aerospatiale of France, along with Messerschmitt-Boelkow-Bohm (MBB) and VFW-Fokker of Germany. There was an attempt to get the Italians involved, but they didn't join up.

The result of this alliance was the "Transall C-160" transport, with three prototypes built, one by each manufacturer in the group. The first prototype flew on 25 February 1963. This led to six preproduction "C-160A" machines, with initial flight in 1965, these aircraft featuring a fuselage stretch of 51 centimeters (20 inches) relative to the three prototypes. Three of the C-160As were evaluated by the AA, while the other three were evaluated by the Luftwaffe. Similar production machines followed, beginning in 1967. The C-160 was one of the first successful multinational European aircraft development programs.

* The C-160 is a neat, competently designed transport of conventional modern cargolifter configuration. It is a high-wing, twin-engine aircraft, fitted with license-built Rolls-Royce Tyne Mark 22 turboprops providing 4,550 kN (6,100 EHP) each, driving four-bladed paddle-style propellers 5.49 meters (18 feet) in diameter. Cargo is handled through a hydraulically-operated loading ramp under a high-mounted tail, and there are two passenger-loading doors with built-in steps on the left side of the fuselage.

Transall C-160T

The C-160 is fitted with tricycle landing gear, with the 2-by-2-wheel main gear assemblies retracting into sponsons alongside the fuselage, leaving the interior cargo area unobstructed. The landing gear is designed for operation from rough airstrips, and its height can be adjusted on the ground to ease cargo loading. Double slotted flaps were fitted to the wing for short-takeoff capability, while spoilers mounted on top of the wing and reversible propeller operation helped reduce landing roll. There was also provision for attaching a booster turbojet with thrust reverser under each wing, but it does not appear that this option was ever implemented.

   TRANSALL C-160:
   _____________________   _________________   _______________________
 
   spec                    metric              english
   _____________________   _________________   _______________________

   wingspan                40 meters           131 feet 3 inches
   wing area               160.1 sq_meters     1,723.4 sq_feet
   length                  32.40 meters        106 feet 4 inches
   height                  11.65 meters        38 feet 3 inches

   empty weight            29,000 kilograms    19,975 pounds
   MTO weight              51,000 kilograms    112,435 pounds

   max speed               513 KPH             319 MPH / 277 KT 
   service ceiling         8,230 meters        27,000 feet
   range                   1,850 KM            1,150 MI / 1,000 NMI
   _____________________   _________________   _______________________

The C-160 has a crew of four and can carry 93 troops, all in pressurized accommodations; or 81 fully equipped paratroops; or 62 litters with four medical attendants; or a maximum of 16,000 kilograms (35,275 pounds) of cargo. The cargo bay features a winch and a roller system, and floor has tie-down attachments for securing the cargo.

* Initial production of the C-160 consisted of 110 "C-160Ds" for the West German Luftwaffe; 50 "C-160Fs" for the French AA; and 9 "C-160Zs" for South Africa. Four of the French C-160Fs were later converted for operation as mail carriers for Air France, and redesignated "C-160P". 20 of the German C-160Ds were passed on to Turkey as "C-160Ts".

The last of initial C-160 production was completed in 1972, but in 1977 production was reinstated of an improved version, the "C-160 Nouvelle Generation (NG / New Generation)" for France. These machines featured:

Initial flight of the first C-160NG was on 9 April 1981. A total of 25 was initially ordered. Of these, ten were configured as inflight refueling tankers with hose-and-drogue gear in the left sponson, with five more having provisions for such gear.

Four more C-160NGs were ordered, for a total of 29, with these final four machines configured with the Rockwell Collins "Take Command And Move Out (TACAMO)" VLF radio system, the same as that used on the US Navy's Boeing E-6A TACAMO platform. The radio system is intended for communications with submerged ballistic missile submarines through a pair of long wire antennas weighted to hang down from the aircraft while it flies in slow circles. These C-160s were designated the "C-160H Avion Station Relais de Transmissions Exceptionales (ASTARTE)". They featured the refueling probe and, interestingly, the hose-and-drogue tanker kit. Initial delivery of this subvariant to the AA was in 1987, with introduction to service in 1988.

Two C-160NGs were also converted to the "C-160G Gabriel" SIGINT and jamming configuration to replace the older Noratlas N.2501 Gabriel platforms. The C-160Gs are littered with antennas and antenna fairings, including wingtip pods for a "electronic support measures (emitter locator)" system; a "farm" of five blade antennas on top of the forward fuselage; a retractable dome under the forward fuselage; and a blister on each side of the rear fuselage. As with the C-160H Astarte, the two C-160Gs are configured with both refueling probe and hose kit. The C-160Gs saw service in the Gulf War in 1991 and presumably in later conflicts.

* Transall also proposed conversion kits to create several other variants of the C-160 that were never built:

* In the late 1990s, all 66 C-160 transport variants surviving in AA service were given an avionics update, including a Global Position System receiver with inertial navigation system backup, a head-up display, and other kit, and redesignated "C-160R", where the "R" stood for "Renove / Renovated". 22 C-160Rs were then upgraded with a self-defense suite including a radar-warning receiver, missile warning system, and chaff-flare dispensers. The ASTARTE and Gabriel special mission-aircraft were given the same sets of upgrades under a separate program. The Gabriels received a further SIGINT system upgrade a decade later.

Despite the investment in upgrades, all the French C-160s have been heavily tasked and are nearing the end of their service lives. They are being supplemented by Airtech CN-234 twin-turboprop cargolifters, but the CN-235 is substantially smaller than the C-160, being nicknamed the "Transallito" in AA service, and cannot be a full replacement. The project replacement is the EADS A-400M, though the AA may acquire new Lockheed Martin C-130 transports as well. The AA already operates a number of different C-130 variants, and new ones would not be a major adjustment.

Transall C-160

A number of German C-160s remain in operation, the Luftwaffe fleet having undergone a service-life extension program in the early 1990s. The Luftwaffe is considering the A400M as a replacement. The Turks were still operating their C-160s at last notice, but the South African machines have been retired.

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[3] AERITALIA G222

* The Italians developed their own answer to the C-160, but the route they took to get there was more roundabout. In 1962, NATO released a "NATO Basic Military Requirement 4 (NBMR4)" request for a vertical or short takeoff and landing (VTOL/STOL) medium transport for NATO armed forces. The exercise proved to be mostly one of futility, since none of the proposals submitted were judged acceptable.

However, the Aeronautical Militaire Italiana (AMI / Italian Air Force), was interested in Fiat's NBMR4 proposal -- a twin-turboprop cargolifter of generally conventional configuration, except for sets of "liftjets" in each engine nacelle, plus lift fans in the tail and wingtips -- as a replacement for the service's old Fairchild C-119 Boxcars. The AMI didn't want the VTOL fixtures, but otherwise the design seemed to fit service needs. This led in 1968 to the award of a contract to Fiat for three prototypes of the "G222TCM" medium tactical transport, including two flying prototypes and a static test machine.

NBMR4 VTOL versus G222

The development program proved troublesome and the first prototype didn't fly until 18 July 1970. The second prototype performed its first flight on 22 July 1971. The AMI's evaluations rated the G222 very highly, resulting in a production contract to Aeritalia -- which Fiat's aircraft group had become in the meantime, with the organizational change contributing to the development delays. There were further delays when the machine was redesigned to use more powerful engines, but the first production machine finally performed its first flight on 23 December 1975.

The G222 was of conventional modern cargolifter configuration, with a high wing, a tail loading ramp, and main landing gear stowed in sponsons alongside the lower fuselage to provide an unobstructed cargo bay. The wing outer panels had a dihedral of 2.5 degrees; the wing featured ailerons and double slotted flaps inboard, the flaps covering 60% of the trailing edge. The flaps were split by the engine; there was a two-section spoiler in front of the outboard flap, with the spoiler used for roll control and as a lift dumper. The ailerons were manually actuated, while the flaps and spoilers had hydraulics; the elevators were manually controlled, while the rudder was hydraulically driven. The nose gear had two wheels, while each main gear assembly had tandem wheels.

There was an "airstair" passenger door forward on the left, matched by an emergency exit on the right; an inward-opening door on each side in the rear for parajumping; and a two-piece tail door featuring a lower ramp and upward swinging door, both hydraulically actuated. The tail door could be opened in flight for airdrops. The aircraft was powered by two General Electric T64-GE-P4D turboprop engines, built under license by Fiat; the engines were rated at 2,535 kW (3,400 SHP) each, driving three-blade reversible propellers. The T64 was originally designed as a helicopter turboshaft, most significantly being used on the Sikorsky S-65 & S-80 helicopters. There was an auxiliary power unit (APU) in the G222's right landing gear sponson for engine starting and ground power.

The G222 was pressurized. The two flight prototypes were unpressurized and had CT64-GE-820 engines with 2,140 kW (2,870 HP) each. There were fuel tanks in the outer wings and wing center section, providing a total fuel storage of 12,000 liters (3,170 US gallons). All flight surfaces had leading-edge pneumatic deicing boots, while the props and engine inlets were electrically deiced.

Aeritalia G222

Avionics included Meteo weather radar in the nose featuring a secondary ground mapping capability, along with radios, radio navigation aids, and an identification friend or foe (IFF) transponder. There were two aircrew, with a jumpseat for a third. Maximum cargo capacity was 9,000 kilograms (19,840 pounds), and the cargo bay could be fitted with a hoist with a capacity of 1,500 kilograms (3,300 pounds). There were 135 tie-down points in the cargo deck. In troop transport configuration, the G222 had 34 sidewall seats and 12 folding center seats, providing accommodation for 46 fully equipped troops. In the paratroop role the center seats couldn't be used, limiting the G222 to 32 paratroops. It could also carry 36 stretchers and two seated casualties, along with four attendants.

   AIRITALIA G222:
   _____________________   _________________   _______________________
 
   spec                    metric              english
   _____________________   _________________   _______________________

   wingspan                28.7 meters         94 feet 2 inches
   wing area               82 sq_meters        882.6 sq_feet
   length                  22.7 meters         74 feet 6 inches
   height                  9.8 meters          32 feet 2 inches

   empty weight            15,400 kilograms    33,950 pounds
   loaded weight           28,000 kilograms    61,730 pounds

   max speed at altitude   540 KPH             335 MPH / 290 KT
   cruise speed            440 KPH             275 MPH / 240 KT
   loaded takeoff length   1,000 meters        3,280 feet
   service ceiling         7,620 meters        25,000 feet
   loaded range            2,500 kilometers    1,560 MI / 1,350 NMI
   _____________________   _________________   _______________________

* 30 standard G222 military transports were obtained by the AMI, and the variant was also sold in small numbers to Argentina, Dubai, Nigeria, Somalia, Thailand, and Venezuela. The G222 was also bought by Libya, but the US embargo against that country meant that the GE engines couldn't be used, and so the machine was redesigned to use the British Rolls-Royce Tyne powerplant. This particular variant was designated "G222T" by Aeritalia and "G222L" by the Libyan Air Force, which obtained 20, including two in VIP configuration.

The Tyne was more powerful than the T64, with 2,535 kW (3,400 SHP), but had higher fuel consumption. The new engine fit required modification of the engine nacelles, and the landing gear was reinforced to handle the higher gross weights permitted by the new engines. The Tyne's greater fuel consumption meant greater weight in principle, but the engine also permitted flight at higher altitudes, of up to 9,150 meters (30,000 feet), and more economical cruise. The G222L actually had longer range than the standard G222, even though it had an empty weight 3,400 kilograms (7,500 pounds) greater.

A number of specialized versions of the G222 were developed for Italian service:

Other specialized variants, for such diverse applications as maritime patrol; airborne early warning (AEW); crop spraying; earth resources mapping; drone launch and control; and inflight refueling were proposed, but never built.

In 2010, the US Air Force awarded a contract to Alenia -- formed by a 1990 merger of Aeritalia and Selenia -- to refurbish 18 old AMI G222s for use by the Afghan Air Force. Deliveries were in 2010. Two of the machines were reconfigurable for presidential flights; all had optional capability for defensive countermeasures and night vision goggle (NVG) operation, but such kit was not installed at the outset.

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[4] ALENIA C-27A / C-27J

* The US Air Force (USAF) selected the G222 in August 1990 for that service's "Rapid Response Intra-Theater Airlifter (RRITA)" requirement, winning over the Airtech CN-235. The USAF obtained an initial batch of five, with thirteen more purchased later, for a total of 18. The type is designated "C-27A Spartan" in USAF service. The prime contractor for the order was Chrysler, which obtained the machines from Alenia stripped of avionics and with minor changes from the stock configuration -- including an antiskid braking system, a modified cargo compartment, and a crew oxygen system. Chrysler then then fitted them with systems as specified by the Air Force, including an avionics suite in a modified cockpit; a loadmaster's position; and provision for medical equipment, including a power converter to provide 60 hertz AC power from the aircraft's 400 hertz electrical system.

All the C-27As were operated for the US Army Southern Command, with its domain of operations in Latin America. The C-27As could fly from 90% of the airports in Latin America, while the C-130 Hercules cargolifter could only operate of 10% of them. It was sometimes called the "Half-Hercules", since it had about half the load capacity of the C-130. However, changing commitments and the cost of operating the Spartans led to the fleet being retired in 1999. However, at least four ended up in the hands of the US State Department, being used in support of anti-narcotics operations in South America.

Alenia C-27J

* A few years later, Alenia partnered with Lockheed Martin to develop an update of the G222 / C-27A, the "C-27J". Improvements in the updated machine included:

The collaboration between Alenia and Lockheed Martin on the C-27J began in 1995, with the joint operation begun the next year and named "Lockheed Martin Alenia Tactical Transport System (LMATTS)". There were three C-27J prototypes. The first was a converted G222, and performed its first flight on 24 September 1999; the second was a full new-build aircraft, while the third was a converted AMI G222 and used for military certifications. The C-27J received both military and commercial certifications in 2001.

The AMI ordered 12 C-27Js, with deliveries from 2005. In that year, Lockheed Martin bailed from the program for whatever reasons, transferring the US element of the partnership to L3 Communications, with the new arrangement named "Global Military Aircraft Systems (GMAS)". The Greek Air Force also selected the type and bought 12, with four fitted out with tanker inflight refueling probes, and a number with strengthened floors. The Bulgarian Air Force ordered five in 2006, with these aircraft featuring defensive countermeasures kit. Lithuania has bought three, Romania bought seven, Morocco bought four, and Mexico bought four as well.

US Army Alenia C-27J

The C-27J achieved what seemed at the time like a particular success by being selected for the US military's Joint Cargo Aircraft (JCA) program, but it more or less turned out to be a booby prize. At the outset, 78 aircraft were to be obtained, but the buy was trimmed to 38 machines in 2010, ending plans for assembly in a US-based factory. The Army originally planned to fly the C-27Js, but the Air Force got the mandate, farming it out to the Air National Guard -- and then retired them all in 2012, stating they were more expensive to operate than C-130s. More encouragingly, in 2012 the Royal Australian Air Force ordered 10 C-27Js to replace de Havilland Caribous that were retired in 2009. The first Aussie C-27J will be delivered in 2015.

Work has been done on development of a removeable inflight refueling tanker kit, and there is thought of building a stretched version of the aircraft, with fore and aft fuselage plugs to increase length by 3 meters (10 feet) and raise troop capacity to 64. There have been considerations of a special operations transport variant, featuring armor; a laser-based defensive countermeasures system; a forward looking infrared (FLIR) imager to permit low-level flight at night; and pilot helmet-mounted displays.

Alenia is working with Alliant Techsystems (ATK) on a "multimission" configuration named the "MC-27J", capable of being adapted to different roles through use of palletized systems. One palletized element is an ATK GAU-23 30 millimeter chain gun cannon, having been demonstrated with a simple optical sighting system handled by the pilot. Over the longer run, the MC-27J would have a more sophisticated targeting system, as well as capability of carrying munitions such as Hellfire missiles or 70 millimeter rocket pods. Other future possibilities include mission specific variants of the machine for AEW, SIGINT, search and rescue, or maritime patrol.

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[5] COMMENTS, SOURCES, & REVISION HISTORY

* An acquaintance once told me that the Noratlas was a "bizarre" machine, but I find it has a comfortable appearance. I used to see the similar Fairchild C-119 Boxcar flying around my hometown very often when I was little, and the Noratlas brings back plenty of memories.

Nord Noratlas

* Sources include:

* Revision history:

   v1.0.0 / 01 nov 02 
   v1.0.1 / 01 nov 04 / Review & polish.
   v1.0.2 / 01 nov 06 / Review & polish.
   v1.0.3 / 01 apr 08 / Review & polish.
   v1.0.4 / 01 mar 10 / Review & polish.
   v1.0.5 / 01 feb 12 / Review & polish.
   v2.0.0 / 01 jul 13 / Folded in Alenia G222.
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