Liberty ship - Wikipedia
By 1941, the steam turbine was the preferred marine steam engine because of its greater efficiency compared to earlier reciprocating compound steam engines. Steam turbine engines however, required very precise manufacturing techniques to machine their complicated double helical reduction gears , and the companies capable of producing them were ...
Liberty 70 Engine - SHIPS Project
The main engine is of the vertical, 3-cylinder, triple expansion type with the following cylinder dimensions: 24.5-37-70 x 48" stroke, developing 2,500 I. H. P. at 76 R. P. M. Steam pressure 220 = , maximum steam temperature 450°, 26" vacuum. The engines are built to the American Bureau of Shipping classification AMS.
Liberty ship steam engine - The Home Shop Machinist
2018年11月4日 · The book is the operating manual for the engine room of Liberty ships. The engine is a double acting triple expansion engine with 24 1/2, 37 and 70 inch bores, and 48 inch stroke. Steam pressure was 220 PSI and it produced 2500 IHP at 76 RPM. The high pressure valve was a piston valve, the other two were slide valves.
Operating Triple Expansion Steam Engine - Liberty Ship ... - YouTube
The video depicts a triple expansion steam engine in operation on the Liberty ship Jeremiah O'Brien in San Francisco. The scenes have been taken during March...
Engineering Branch Training - Part 3 - Maritime
In the triple expansion engine used in the Liberty ship, a cross-section drawing of which is shown on page 70, the steam enters the H. P. (High Pressure) steam chest of the engine at about 220 pounds pressure where it is admitted to the cylinder by the H. P. piston type D slide valve.
Liberty ships were re-engined to increase their performance One of the eleven triple-expansion reciprocating steam engines built by the Joshua Hendy Iron Works as powerplants for the cargo ships produced by the Western Pipe and Steel Company of California on behalf of the US Shipping board in World War I. Each engine weighted about 137-tons and ...
Marine steam engine - Wikipedia
All 2,700 Liberty ships built by the United States during World War II were powered by triple-expansion engines, because the capacity of the US to manufacture marine steam turbines was entirely directed to the building of warships.
Joshua Hendy Iron Works - Wikipedia
By the end of the war, the Joshua Hendy Iron Works had supplied the engines for 754 of America's 2,751 Liberty ships, or about 28% of the total - more than that of any other plant in the country [2] [9] and the main engines of all Tacoma-class frigates (2 per ship) built on the West Coast, 18 by Consolidated Steel in Wilmington and 12 by Kaiser ...
Liberty ship | Military Wiki | Fandom
In 1940, the British government ordered 60 tramp steamships from American yards to replace war losses and boost the merchant fleet. These Ocean -class ships were simple but fairly large (for the time) with a single 2,500 hp (1,860 kW) reciprocating steam engine of …
Liberty Ship engine room - YouTube
Triple-expansion steam engine in action aboard the restored Liberty Ship John W. Brown during a "Living History Cruise" out of Portland, Maine, 8-18-07