This new helicopter was to become the prime carrier of the Army’s 11-man rifle squad with the additional missions of evacuating wounded personnel and of resupplying troops in battle. A four-blade elastomeric bearing main rotor head, enclosed in a propeller-shaped hub, provided full main rotor blade articulation. The UH-60 helicopter is classified as Class 1 or Class 2 in accordance with TM 1-1520-237-10. These features provided protection for a wider weight range to accommodate both male and female occupants. WIDE CHORD MAIN ROTOR BLADES IMPROVE UH-60M PERFORMANCE - All composite spar reduces maintenance man hours - Wider chord generates additional 470 pounds of lift The Bell UH-1 Huey helicopter performed those critical missions all during the Vietnam War although it was not designed to operate in the high temperature and intense ground gunfire environment to which it was exposed. Two 365 day a year contingencies are currently being conducted. Unit weight of the future Land Warrior had increased to 290 pounds from the 240-pound value allocated for each soldier when the Black Hawk was designed in 1972. The rotation of the rotor system creates centrifugal force (inertia), which tends to pull the blades straight outward from the main rotor hub. The first was recognition that an additional crewmember was needed to serve as a dedicated second gunner during operations in the battlefield. The primary missions of the CH-60 will include day and night VERTREP, day and night amphibious SAR, vertical onboard delivery, and airhead operations. On December 23, 1976, Sikorsky was awarded a sole-source contract for initial rate production of the UH-60A, which shortly after was renamed by the Army as the Black Hawk. The two prototypes would then undergo a competitive flight evaluation by Army personnel.

The Navy needed a Seahawk variant but could not afford a utility version. 8,000 lbs. The Navy hopes that the CH-60 will be able to meet its biggest challenge�replacing the gigantic Sikorsky-built MH-53E Sea

The heart of the system was a closed-loop algorithm that calculated the force generator commands required to minimize vibrations as measured by accelerometers located throughout the cockpit and cabin. The company is to develop new technologies such as a zero-vibration system, adaptive flight control laws, advanced fire management, a more durable main rotor, full-spectrum crashworthiness, and damage tolerant airframe; then they are to transition them to the helicopter. and laser imaging detection and ranging systems promise to make the CH-60 a capable mine hunter. 1615-01-106-1903, BLADE,MAIN ROTOR. Both had a nominal rating of 1,500 horsepower intermediate rated power at sea level standard conditions. The The Colombian Army became the first worldwide operator of the S-70i with Terrain Awareness and Warning Capability (HTAWS) after taking delivery of the first two units on 13 August 2013.In February 2015, the U.S. State Department approved a possible Foreign Military Sale of nine UH-60Ms with associated equipment and support to Sweden requested 15 UH-60M helicopters by Foreign Military Sale in September 2010.Taiwan (Republic of China) operated S-70C-1/1A after the Republic of China Air Force received ten S-70C-1A and four S-70C-1 Bluehawk helicopters in June 1986 for Search and Rescue.Turkey has operated the UH-60 during NATO deployments to Afghanistan and the Balkans. Cloud, MN crashed shortly after taking off on a maintenance test flight, killing all 3 men on board. The Black Hawk has a cargo hook for external lift missions. Stabilator incidence responds to changes in airspeed, collective stick position, aircraft pitch rate and aircraft lateral acceleration.

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