This power rating increase was achieved by selectively increasing gear face widths, strengthening shafting and enlarging housings of the basic UH-60A main gearbox. The Seahawk’s improved durability gearbox was rated at 3,400 HP compared to 2,828 HP for the “A” model gearbox. The uprated Seahawk engines, identified as the T700-GE-701C for the Army, had an intermediate rated power of 1,857 SHP compared to 1,622 SHP for the T700-GE-700 engines that they replaced. The main building blocks selected to create the “L” model were the uprated engines, improved durability main gearbox and strengthened flight controls developed several years earlier by the US Navy for its SH-60B Seahawk. No changes were made to the rotor systems. The significant improvements of the “L” model were in upratings of the propulsion and the flight control systems. The external features of the UH-60L model were essentially unchanged from the “A” model. Certain structural design changes were made in the propulsion system to accommodate the increased power. Since higher power was needed to recover performance, the Army took advantage of the T700-GE401C engines developed by the Navy for the Seahawk program and created a version to power the new UH-60L model. ![]() The power of the original T700-GE-700 engines was insufficient to achieve specification performance at that increased weight. reflecting the sum total all engineering change proposals and specification change notices issued since production started in 1976. ![]() against a specification weight that had also increased over the years to 11,284 lbs. The last UH-60A delivered weighed 11,253 lbs. The added features that had the most impact on weight are noted.Įach pound that was added reduced performance, particularly vertical climb capability and cruise speed, which finally fell below the Army’s minimum specification requirements of 450 fpm and 145 knots. The UH-60A empty weight grew nearly one pound for every aircraft delivered essentially on a linear basis as shown in this graph. The development of the UH-60L model to replace the “A” model was intended to restore that lost performance especially in hot and high ambient conditions by upgrading its propulsion system. As equipment and features were added and components were strengthened, weight growth of the UH-60A began to degrade aircraft flight performance. In addition, service experience showed that the reliability and durability of certain aircraft systems needed to be improved. The Army’s operational and combat experience indicated the need for features and equipment that were not envisioned when the Black Hawk program began. With its increased power and strengthened cargo hook, the UH-60LĬould transport the M1036 High Mobility Multipurpose Wheeled Vehicle, During that period, the UH-60A model went through a maturing phase reflecting combat service experience combined with the rigors of high flight time and environmental stress particularly in the Middle East as well as other combat areas described in the UH-60A history accessible on this website. This upgrade, primarily in installed power, was needed to restore performance lost by the “A” model due to many weight increases during its 11-year production run of nearly 1000 units. The new “L” model was the first major upgrading of the basic Black Hawk helicopter since the first UH-60A model was delivered in 1978. Army and Sikorsky Aircraft began development of the UH-60L model during 1987 to replace the “A” model whose performance capabilities were declining as a result of weight growth. While I understand the difficulty in creating the systems within the helicopter, having the model alone with the scripting options would greatly enhance the realism feel.Īnyway, fantastic work on this project and looking forward to all the enhancements.Īir source requirement added to engine start procedureįlight model updated - more accurate torque/transmission behaviour (ETL, mass, etc.The U.S. Given the naval aspect in DCS, the enhanced Moose CSAR with downed pilots in the water, and the ASW script available, it would be great to have the SH/MH-60. I am certainly looking forward to v1.2 so that we can use mission generated ADF and FM.Īs for likely not making the Seahawk, I would kindly ask that you reconsider. ![]() We are bringing some of the smaller changes as options to the core mod such as the Refuel Probe and later on, Tacan navigation.įirst, excellent Mod that I would have gladly paid what I paid for the Huey. Without the ability to implement the systems that actually makes those unique (FLIR, radar, ASW systems, hoists, firefighting systems etc.) I don't really see any point. 5) What about a Pave Hawk/Seahawk/Jayhawk/Oceanhawk/Firehawk/Gods-knows-what-hawk?
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