X-150 - A Micro Turbojet Engine
Watch me build my engine from scratch !
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X-150 - A Micro Turbojet Engine Watch me build my engine from scratch !
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My Turbine Collection |
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Description |
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I got this Titanium fan blade from eBay, it was out of a Harrier Pegasus vectored thrust engine. I put together my own turbine of dia 130mm for size comparison. It costs more than £2000 when new, but now since it is not air-worthiness, you can get it at a cost of about £30. Manufactured , in 1980s by investment casting I believe. Don't know how many hours it has served, but from the back you can see some pitting on it, I think this is the reason it get retired from servicing. Note the fir tree root and mid-span shroud. Click on the picture to see full size view. |
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Cut away view of Rolls-Royce Pegasus vectored thrust engine. Note that the copyright of this picture has expired. The blade I have is the first stage fan (compressor LP1) as seen from the intake of the engine, the mid-span shrouds or brace is for reducing the vibration and reinforcing the strength of the blades. 4 vectored thrust nozzles two of which are cold while the rest are hot. Click on the picture to see full size view. |
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This blade was used in compressor stage of GE J-85/CJ-610, J-86 powered USAF T-38 Talon and CJ-610 powered Learjet. Blade made of Titanium, measures 4 3/4 inches long, very thin walled, strong and light weight. After assembled it measures 14 1/2 inches across. Note the blade root, not a fir tree root anymore, but a bolt joint with 1/4 inch holes. |
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J-85 engine. Each J-85 produces 2,850 lbs. of thrust, yet weighs only 395 lbs, has a Specific Fuel Consumption value of 0.99. |
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This is a turbine blade out of an unknown engine. The reason I put it here is that it is a nice demonstration of a typical impulse-reaction blade. It features both the impulse and reaction section, impulse at root section, reaction at tip section. |