Verify out these turbine blade manufacture photos:
Image from page 1099 of “”Verbal” notes and sketches for marine engineers : a manual of marine engineering practice, intended for the use of naval and mercantile engineer officers of all grades, and students, and is specially compiled for the use of engin
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Title: "Verbal" notes and sketches for marine engineers : a manual of marine engineering practice, intended for the use of naval and mercantile engineer officers of all grades, and students, and is specially compiled for the use of engineer officers preparing for examinations of competency at property or abroad
Year: 1917 (1910s)
Authors: Sothern, J. W. M. (John William Key), 1868-1940
Subjects: Marine engineering — Handbooks, manuals, and so on
Publisher: Glasgow : J. Munro & co. restricted
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN
Click right here to view book online to see this illustration in context in a browseable on the internet version of this book.
Text Appearing Before Image:
sults in a decreased steam pressureadmission to the first stage of the reaction blading of the turbine, whichis hence less topic to shock or vibration when steam is initial turned onfor either ahead or astern. It will therefore be evident that the maximumsteam pressures are exerted on the impulse blading only, the reactionblading getting the steam at significantly reduced stress. 668 Verbal Notes and Sketches CURTIS TURBINES. Ttie British Thomson-Houston Co. Ltd., Rugby, own the patentfor the Curtis steam turbine, which they have manufactured at theirRugby functions for a considerable time, and which they apply to theirelectric generators. By the courtesy of the British Thomson-Houston Co. Ltd., the author is enabled to reproduce the followingnotes on turbines. Impulse Turbine. An impulse turbine is distinguished by the fact that the potentialenergy of the steam is transformed into kinetic energy by expansionof the steam through sjjecially shaped stationary nozzles. As a result Row ofMoving Buckets
Text Appearing Soon after Image:
Stationaryh0Z2lc 1 No. 21.—Diagram of Basic Impulse Turbine. of this the steam acquires great velocity, whereupon it is brought incontact with suitable blades or buckets mounted on the periphery ofa wheel or wheels cost-free to rotate, the buckets getting shaped so as toturn the issuing jet of steam progressively and without having shock in a back-wards direction. This is shown diagrammatically in No. 21. The effect of the steam on the buckets outcomes in the steamgiving up the entire or portion of its velocity and consequent energyto the buckets, thus causing rotation of the wheel. It is often argued that the velocity of the steam in animjDulse turbine is liable to trigger harm to the moving bucketsthrough erosion, but this has been proved not necessarily to be thecase, as the buckets of Curtis turbines which have been running forsome years show on examination only the very slightest tracesof wear. Appendix 669 Principle of Impulse Turbine. A mass which has been moving at a particular velocity will, in
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Dwarfed by the wind turbine blades
Image by Green Power Futures
Siemens set up a wind turbine blade manufacturing plant in Tillsonburg shortly after the recession hit and right now employs 400 folks in the region. Photo David Dodge, GreenEnergyFutures.ca
Fourmile Fire – Boulder: Skycrane 733 from the west side of Wonderland Lake
Image by Rocky Mountain Joe
These Helicopters are remarkable. One of my brothers sent me this text from the Erickson web site: The Erickson S-64 Aircrane is manufactured by Erickson Air-Crane Incorporated which is headquartered in Central Point, Oregon. The aircraft wasoriginally manufactured by Sikorsky Aircraft as the S-64A "Skycrane" and sold to the Army as the CH-54A "Tarhe". The CH-54 performed with an outstanding service record in Vietnam supporting the Army’s 1st Cavalry Division, Airmobile by retrieving more than 380 damaged aircraft, saving an estimated million. The S-64 was the very first helicopter built as a flying crane with an aft-facing pilot station that offers the pilot an unobstructed view of the load getting carried and complete good handle of the aircraft in the course of precision operations.
The rotor program consists of a six-blade totally articulated primary rotor and a four-blade tail rotor. The S-64E is powered by two Pratt and Whitney turbine engines generating a combined maximum takeoff rating of 9,000 SHP, giving the S-64E model an external load lift capacity of 20,000 pounds (9,072 kg) at sea level. The S-64F characteristics a strengthened airframe, a rotor program with longer chord length, and two Pratt and Whitney engines rated at 9,600 SHP which provides the S-64F model an external load capacity of 25,000 pounds (11,340 kg) at sea level