The Army’s planned upgrades included improved flight performance, full compatibility with the emerging digital battlefield, enhancement of survivability as well as other improvements to increase operational effectiveness while reducing operation and support costs. HVBSS missions are designed to take control of a ship considered to be a Contact of Interest (COI). The S-70A Black Hawk and S-70B Seahawk model description files, accessible on this website, identify derivative models for which descriptive information is available from the Sikorsky Product History section of this Igor I. Sikorsky Historical Archives website. The actual contract expenditures were approximately 50% higher for both companies due to unplanned work to correct problems uncovered during flight-testing.The most significant design and technology innovations of the YUH-60A were its titanium spar main rotor blades having a high lift, cambered airfoil (SC1095 and SC1094R8 airfoil sections), 18 degrees of negative twist and 20 degree aft swept tips. The helicopter hoist can recover survivors from a hover height of 200 feet above the ground or vertical landings can be accomplished into unprepared areas. This weight increase took into account body armor along with improvements in communications, enhanced vision capability, GPS positioning, and other new features of the soldier’s equipment package. ... How far can main rotor blade tips deflect below normal droop position when being tied down? Dragon minesweeping helicopter. The sketches below illustrate the most noteworthy ballistic and crash survivability features of the UTTAS. This article is about the Sikorsky S-70 family's US Army military versions and their operators. These motors drove counter-rotating eccentric masses to generate forces of appropriate magnitude and frequency to cancel fuselage vibrations.In the UH-60M, a force generator capable of producing 1000 lb. Rotor solidity .083. crew of three, can lift an entire 11-man fully-equipped infantry squad in most weather conditions.
The UH-60L also featured more power and lifting capability with upgraded T700-GE-701C engines and an improved gearbox, both from the Development of the next improved variant, the UH-60M, was approved in 2001, to extend the service life of the UH-60 design into the 2020s. In deployment scenarios some locations have full flightline support capabilities with limited backshop support, while other deployed sites have less support, down to a bare base scenario. A four-blade elastomeric bearing main rotor head, enclosed in a propeller-shaped hub, provided full main rotor blade articulation. ft., Disc area 2,206 … was located in the forward cabin overhead, replacing a heavy spring-mass absorber. Dual digital computer flight control computers were installed, along with a fully coupled flight director system, providing stability augmentation, trim and flight path stabilization functions. Design innovations were incorporated to greatly reduce the possibility of post-crash fires, which had been a major cause of injuries and fatalities in earlier helicopters. In this paper, the results from this test program will be compared with flight test and model-scale test data, and with predictions to 1) evaluate the capability of the 80 x Medical Evacuation was the Surgeon General�s number one near-term medical modernization priority in the FY94-08, FY95-09, &FY96-10 Army Modernization Plan. Its procurement strategy was to select two companies from those who submitted proposals, to each design and develop prototype helicopters to the same specification and using the same engine models. Because of this problem, the large stabilizer was changed to a variable incidence stabilator early in the flight test program, which corrected this problem. The cowling on the engine compartment is capable of supporting a weight of ____ lbs. This feature turned out to greatly increase vibrations of the YUH-60A and had to be changed. The Navy hopes that the CH-60 will be able to meet its biggest challenge�replacing the gigantic Sikorsky-built MH-53E Sea Data from Encyclopedia of Modern Warplanes, International Directory, Black Hawk
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. Figure 2-18. The added lift contributed by the canted tail rotor was provided at very low power the further helped improve the overall Figure of Merit of the aircraft. It was raised by adding a removable shaft extender which, when removed for air transport, allowed the rotor to be lowered to the original low position.Other configuration features included a tail landing gear and a tail rotor placement on the starboard side that functioned as a tractor tail rotor as opposed to the conventional pusher tail rotor.
The CH-60 will also be capable of carrying FLIR and Hellfire missiles, making it an even more versatile platform. During the preceding decade, the Army recognized the need for a new utility transport helicopter and began to draft its specification basing it strongly on the lessons learned during the war in Vietnam. 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. As that war wound down, the Army began a program to replace the Huey with an all-new helicopter designed to correct significant performance and survivability shortcomings experienced with all prior generation helicopters. In accordance to AR 95-1, what is the definition of this class for the UH-60? It also serves as the primary Search and Rescue (SAR) helicopter for the Amphibious Task Force (ATF), providing essential support to amphibious operations.