A few good machining turbine rotors pictures I identified:
Marine Week Boston, 2010: Bell UH-1N Huey helicopter getting viewed by civilians & soldiers at dusk
Image by Chris Devers
Pasting from Wikipedia:
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The UH-1 Iroquois is a military helicopter powered by a single, turboshaft engine, with a two-bladed primary rotor and tail rotor. The helicopter was created by Bell Helicopter to meet the United States Army‘s requirement for a medical evacuation and utility helicopter in 1952, and initial flew on 20 October 1956. Ordered into production in March 1960, the UH-1 was the very first turbine-powered helicopter to enter production for the United States military, and much more than 16,000 have been made worldwide.
The very first combat operation of the UH-1 was in the service of the U.S. Army in the course of the Vietnam War. The original designation of HU-1 led to the helicopter’s nickname of Huey. In September 1962, the designation was changed to UH-1, but Huey remained in widespread use, as well as being chosen as the official name by the United States Marine Corps. Roughly 7,000 UH-1 aircraft saw service in Vietnam.
In 1962, the Marines held a competitors to choose an assault assistance helicopter to replace the Cessna O-1 fixed-wing aircraft and the Kaman OH-43D helicopter. The winner was the UH-1B, which was already in service with the Army. The helicopter was designated the UH-1E and modified to meet Marine needs. The main alterations incorporated the use of all-aluminum construction for corrosion resistance,[footnote three] radios compatible with Marine Corps ground frequencies, a rotor brake for shipboard use–to cease the rotor speedily on shutdown–and a roof-mounted rescue hoist.
The UH-1E was first flown on 7 October 1963, and deliveries commenced 21 February 1964, with 192 aircraft completed. Due to production line realities at Bell, the UH-1E was created in two distinct versions, each with the same UH-1E designation. The very first 34 constructed were essentially UH-1B airframes with the Lycoming T53-L-11 engine producing 1,100 shp (820 kW). When Bell switched production to the UH-1C, the UH-1E production benefited from the exact same adjustments. The Marine Corps later upgraded UH-1E engines to the Lycoming T53-L-13, which developed 1,400 shp (1,000 kW), after the Army introduced the UH-1M and upgraded their UH-1C helicopters to the same engine.
Turbines and Towers
Image by brewbooks
Turbines and Towers
127 wind turbine generators, spanning across 9,000 acres near Ellensburg, Washington.
Towers are 221 ft higher at hub, 13.2 ft wide base and 7.six ft wide at top and weigh 104 tons. Each and every turbine consists of 3-blades, 129 ft lengthy, 11.62 ft at widest and 1.six ft at tip with each blade weighing 14,300 lbs. The rotor (blades, hub and nose cone) weighs 42 tons.
Turbine generators are V80-1.8 MW machines manufactured by Vestas, a Danish organization. Each generator can generate 690 volts, which is stepped-up to 34,500 volts by an on-board transformer. The generator is housed inside a fiberglass nacelle.
The generator and nacelle collectively weigh 69 tons.
Total height with a blade totally extended is 351 ft and total weight is about 270 tons. These are the largest wind turbine generators in Washington State (as of 2007)
Every single tower foundation reaches a minimum depth of 25 ft and a maximum of 32 ft based on bedrock depth and requires an average of one hundred to 260 cubic yards of concrete. Every single foundation demands 120 anchor bolts that span from the surface of the ground to the bottom of the foundation. A single 28 ft anchor bolt weighs about 150 lbs.
Rotors turn 15.5 rpm, turning clockwise (front view) with a rotor diameter of 264 ft, larger than a wingspan of a Boeing 747.
Turbines can create electricity at wind speeds as low as 9 mph, reaching their peak of production at 31 mph and shut down at continuous wind speeds of 56 mph. The prevailing winds are from the northwest.
Each turbine is capable of making 1.eight megawatts, or a total of 229 megawatts of capacity, sufficient electrical energy to serve about 73,000 properties when all 127 are creating at full capacity.