Bell UH-1 Iroquois (commonly known as Huey) is a multirole helicopter of American production from the Cold War and modern times. The flight of the prototype took place in 1956, and the machine entered service in 1959. The helicopter - in the UH-1D version - has a total length of 17.4 m, and the diameter of its main rotor is 14.6 meters. The drive is provided by a single 1100 HP Lycoming T-53-L-11 engine. Its maximum speed in horizontal flight reaches 220 km / h. The helicopter has a classic layout with a single main rotor and a propeller on the tail boom.
Work on the Bell UH-1 machine, commonly known as the Huey, started in the early 1950s, when the US Army reported a need for a new transport, medical evacuation (MEDAVAC) and multi-role helicopter. The emphasis is on the simplest and classic design as well as high reliability. Bell UH-1 helicopters performed very well during the Vietnam War (1964 / 1965-1975), where they underwent their baptism of fire. Due to their indiscriminate use in this conflict, they have almost become a symbol of this war. In the course of production, many development versions of this helicopter were created, among which the following can be indicated: UH-1 C (version adapted to take small arms and unguided rockets and with a more powerful engine compared to versions A and B), UH-1 D ( basic, transport, production version) or UH-1H (an improved D version with a more powerful drive unit). It is worth noting that the UH-1Y Venom version was also created, but due to the number of upgrades and improvements, it should rather be viewed as a separate helicopter model. The Bell UH-1 helicopter has gained enormous popularity and in various versions has been or is still operated by countries such as: Argentina, Brazil, Bolivia, Chile, Georgia, Japan, Germany and Italy.
The AH-1 Cobra helicopter (Bell 209) is an attack helicopter in the classic layout, using many components of its "big brother" UH-1 Huey. The first flight of the AH-1 prototype took place on September 7, 1965 and the helicopter entered mass production in the same year. During the Vietnam War, 1,126 machines of the G model were produced, of which 279 were lost in combat. Due to the very high reliability of the structure, small side profile and good performance, the helicopter remains in service to this day in the US Marine Corps. The AH-1 allowed the US Army to fully implement the theoretical assumption of airmobile infantry ("air cavalry") through the fire support of landing infantry units. Today, the AH-1 Cobra is primarily used against an armored celon. From 1965, several versions of this successful helicopter were created, including: AH-1G (basic version), AH-1J (two-engine version), AH-1Q (version armed with TOW missiles). Technical data: Top speed: 333 km / h; maximum range (depending on version): 507-574km, armament: fixed-1 20mm M197 three-barrel cannon, slung rockets, guided missiles, unguided missiles and cannon pods.