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Model T62T-32 Titan Gas Turbine Engine Turboshaft, 1-stage centrifugal compressor annular combustor, 1-stage turbine. Compressor Radial air intake between compressor and reduction gearbox Single-entry impeller mounted back-to-back with turbine wheel on main shaft supported in ball thrust and roller bearings. Air mass flow 2.2 Ib/sec. Turbine Radial inflow type. Turbine wheel with integral vanes and exhaust in centre. Max exhaust temperature 1,180 F (638C) at 61,091 rpm. Exhaust Fixed area outlet at rear of turbine.
Power outlet Reduction gearbox at front of unit. Output shaft 6,000 rpm. Fuel system fuel pump 600-psi fuel control. Ignition High-energy capacitor discharge ignition. Lubrication Return system. 15-65psi. Width and height 16.81in and 21.37in Length 33.41in Weight with gearbox 142 Ib (dry) Power weight 1.25 shp/Ib Fuel spec Gasoline, Kerosene, or JP-4Fuel consumption1.3 Ib/shp/hr Oil specMil -L- 23699, L-7808 Oil Consumption 0.02 phr Rating Max cont.160shp/61,091 rpm/sea level The T62T-32 shown here is a single engine, fixed shaft turboshaft engine with a power output of 150 shaft horsepower at an output speed of 6,000 rpm. The Solar T62T-32 turboshaft is a compact single shaft turboshaft with an integrated output reduction and accessory gearbox.
It is very similar to the Solar T41 in general layout although the performance is much improved. Air is drawn in through the screened radial engine inlet, between the gas turbine assembly and the gearbox housing. Air passes through the inlet housing before being drawn into the single stage centrifugle compressor.
The centrifugal compressor pressurizes the air and feeds it through the diffuser and into an annular reverse flow combustor with six fuel injectors. The combustor is the main difference between the T41 and the T62. In the combustor, fuel is mixed with the air and ignited to drive the radial inflow turbine. The compressor and turbine rotors are back to back assemblies; essentially one single integrated rotor with a compressor on one face and a turbine on the other face. The engine exhaust is expelled through an axial flow exhaust diffuser. At the front of the engine, the rotating shaft turns a planetary gear set which drives subsequent gears in the reduction and accessory gearbox. The gear train sits in a cast aluminum housing to which the engine accessories and output load are attached. The gearbox housing forms an integral wet oil sump, in which an engine driven oil pump resides. The engine output is driven at 6,000 rpm, while the accessory pads turn at various speeds. Accessories include the aforementioned oil pump, a fuel pump and mechanical fuel control/acceleration limiter, and a 12V starter assembly. Engine governing is electronic.
An external electronic control unit takes an engine speed reading from a gearbox mounted magnetic pickup, and sends a signal to an engine mounted electric torque motor, which moves the fuel lever on the fuel controller to maintain a set rpm. The mechanical fuel control features an acceleration limiter bellows assembly, which uses a compressed air signal bled off the compressor to control the amount of fuel going to the burner during starting, acceleration, and deceleration.
Starting the engine requires energizing the starter and ignition exciter. At 4%, the start fuel valve should open, which sends a small volume of fuel into the burner through a separate pilot fuel nozzle. The fuel ignites upon contact with the igniter as the engine continues to accelerate. At 10%, the main fuel solenoid should be energized allowing main fuel to the burner, which ignites when it comes in contact with the pilot flame. As the engine continues to accelerate, air pressure in the acceleration limiter should build, allowing more and more fuel to be fed into the burner, allowing for smooth acceleration without over temp, despite the fact that the electric torque motor has the fuel valve fully open to achieve governed speed. At 78%, the starter and igniter are deenergized. At 96% rpm, the three way start fuel solenoid is de-energized, which re-routes additional fuel to the fuel control to assure that there is sufficient fuel flow for full load operation. At 100%, the governor should signal the torque motor to reduce fuel flow to maintain governed speed. It is possible to throttle the engine by changing the governor setting, but the T62 is intended to be a constant speed engine which operates at 100% speed at all times making it a perfect choice for the helicopter.
PROP ENGINEERING. Single shaft 150HP, T62-32 GAS Turbine has a 6000 RPM main gearbox output (1-1/4" x 24 female spline). It also comes with a complete wiring harness, Cannon plugged at the turbine end and labelled at the opposite free end.
The T62-32 was used in the Wasp T62 Helicopter Project
Maintenance:
These turbines can be very long lived, and there is no specific TBO. This is because the main high speed turbine components of these units are factory listed as "On Condition" and/or 6000 cycles. They have been known to run for 10's of thousands of hours (and 20,000+ hours in not unheard of). Although, we do suggest maintenance procedures at far lower intervals for any manned aircraft.
Первое личное знакомство - культовый вертолет MD500
16 Февраля 2008 23:19:32
забыл на морозе что "Torque" значит крутящий момент :)
Цитата:
Тorqueнуло от мороза =)
(Тимка)
Killer egg / Flying egg
Цитата:
Scorpion Attack Helicopter The Scorpion Attack Helicopter is a fictional attack helicopter of unspecified origin that appears in the 1990 movie Fire Birds. At least one of the type was shown being used by a South American drug cartel and piloted by highly skilled mercenaries, along with a pair of Saab Draken fighters. The Scorpion has superior agility and speed compared to most other helicopters, notably the AH-1 Cobra and the UH-60 Black Hawk, easily destroying the aforementioned helicopters. Armed with unguided rockets and machine guns, it is roughly equal in air combat capabilities to the AH-64 Apache. The real helicopter used for the film was a Hughes H-6 derivative, probably a Boeing MD500 Defender. It was fitted with weapon pods and a nose mounted scope.
