Creative New

Via unicopter ,rolls-royce ,gizmag

General Information:

Engine: 1 x LHTEC T800 turboshaft, driving both the coaxial rotor and the six-bladed pusher propeller Power 1000 – 1250 kW (1300 – 1680 shp) 

Performance: Max. cruise speed (max.): 460 km/h (250 kts) Range 1300 km These may have changed. 

Blades: Eagle Aviation Technologies is to provide the blades. http://www.eagleaviationtech.com/

Propeller: Aero Composites, Inc. will build the six-bladed propulsor. http://www.aerocomposites.com/ 

Fly-by-Wire: These technologies include an integrated Fly-by-Wire system that allows the engine/rotor/propulsor system to operate efficiently, with full control of rotor rpm throughout the flight envelope, I.e. Variable speed rotors.

Comparison between the XH-59A, Proposed future improvements to the XH-59A, and the X2TD:unicopter

The LHTEC T800 is a collaborative turboshaft engine between Rolls-Royce and Honeywell.

• T800 power range: 1,300 – 1,800shp
• First engine delivery (CTS800-4) September 2001
• CTS800-4N certification completed in November 2003
• CTS800-powered Super Lynx now ordered by four customers.

The T800 engine and its civil derivatives (CTS800/CTP800) feature modular design with dual shafts, two-stage centrifugal compressor, annular combustor, two-stage HP and two-stage power turbine. Turboshaft models are equipped with an inlet particle separator module. Some versions (including the CTP800) are also equipped with a speed reduction gearbox. All models are controlled by advanced FADEC (full authority digital engine control) (Mil-Std 1553 or ARNIC 429 bus) systems.

The next-generation T800 turboshaft/turboprop family has been developed by the Light Helicopter Turbine Engine Company (LHTEC), a 50:50 partnership betweenRolls-Royce and Honeywell. Setting a new benchmark in engine performance and reliability, the T800 was originally developed to power the US Army’s Boeing Sikorsky RAH-66 Comanche stealth helicopter.

Military qualification and civil certification of the baseline T800-LHT-800 was completed in 1993. A 17 per cent growth version, designated T800-LHT-801, has since been developed, first flown in the Comanche in June 2001. A further 7 per cent ‘throttle push’ upgrade has resulted in the T800-LHT-802 engine, delivering 1,608shp.

The T800 has generated a large number of potential applications during its development, with flight testing undertaken on the Eurocopter AS.365, Vought HH-65, Bell UH-1H and HAL ALH. The commercial CTS800 has also been selected as the boundary layer compressor drive for the ShinMaywa US-2 amphibious search and rescue aircraft upgrade. A T800-powered version of the Agusta A129 attack helicopter first flew in 1988, this engine being offered for both new A129 sales and fleet upgrades.

The CTS800 also powers the next generation of AgustaWestland Super Lynx aircraft, having first flown in the Lynx in 1991. The CTS800-powered Super Lynx has already attracted four new operators, with the engine also being offered as an upgrade for existing Lynx fleets.

T800 4N

Basic engine specifications:

Weight 408 lb

Power / weight ratio 3.26 lb/shp

Airflow 7.22 lb/sec

Pressure ratio 14.6:1

Design speeds @ 100% rpm

Power output shaft 6,402 rpm

Gas producer rotor 44,850 rpm

Power turbine rotor 23,000 rpm

Fuels JP-4, JP-5, JP-8

Oils MIL-L-7808, MIL-L-23699

AeroComposites, Inc. announces the introduction of an advanced technology all composite propeller blade bringing a versatile new level of sophistication to general aviation. The fiberglass and graphite fiber reinforced composite blade is an innovative design and is manufactured using the advanced resin transfer molding process. The company expects to complete initial fabrication in time to introduce the propeller at EAA’s Oshkosh AirVenture in late July.

Competitively priced, propellers by AeroComposites offer several benefits for aircraft owners. “Each blade has more twist for higher thrust, is stacked for even load on the bearings and the graphite makes it extremely strong”, says Rick Hadden, President, AeroComposites. “In addition, the natural dampening characteristics of composites mean lower vibration and it’s weight is only one half that of an aluminum blade, which is easier on the engine”.

Overall, the benefits of composites over the life of the aircraft make it a desirable alternative to aluminum propeller blades. “Each AeroComposites’ blade features a foam core and layers of carbon fiber and fiber glass”, says Hadden. “Erosion and stone damage to the outer fiberglass can be restored quickly and easily to the original airfoil shape. A metal sheath will help protect the fiberglass on the leading edge. As a result, the blade will only have to be replaced if damage is sustained through the fiberglass outer layers and into the carbon fiber”.

Initial production at AeroComposites will be for two and three blade constant speed propellers for homebuilt and other Experimental aircraft utilizing Continental and Lycoming engines. AeroComposites propellers are designed to handle up to 150 horsepower per blade. A three blade prop can be applied to engines up to 450 horsepower.

AeroComposites is a privately held corporation with offices in Pennsylvania and Connecticut. The company’s advanced propellers are constructed of graphite and fiberglass reinforced composite material representing substantial improvement in design and production technology. AeroComposites’ blades are intended for use on general aviation aircraft.

Eagle Aviation Technologies, Inc. is a small aerospace research and prototype development company formed in 1996 by Emitt & Gemma Wallace. 

  EATI supports its engineering expertise with a Composite Model Assembly Shop and Precision Machine Fabrication Shop for customized solutions of complex components, precision machined parts, and assemblies.  Typically, EATI’s customers require custom prototypes or a production run of a component to meet a larger development specification.  We pride ourselves on the speed with which we can transfer a customer’s requirement into a low-cost, reliable hardware deliverable.  Eagle Aviation is ideally positioned to execute design, manufacture and production for aerospace and aircraft components. EATI has worked diligently and successfully to form strength in our staff and vendors. Currently our team includes technical, analysis, design, manufacturing, model making (composites) and program management, utilizing Microsoft Projects. The team has executed lead roles on multiple prototype design and manufacturing efforts over the last twenty five (25) years. The EATI team has developed an extremely cost-effective approach. Our current qualifications cover conceptual design, preliminary design, analysis, critical detail design, pattern making, tooling design & manufacture, composite manufacture, precision machining, hardware manufacture, vehicle assembly, and developmental testing.

Preliminary Structural Design of Composite Blades: nrel