This book is included in the SSRsi Survival Library Military Titles section.
BASIC HYDRAULICS AND HYDRAULIC PLUMBING
Subcourse Number AL0907 EDITION A US Army Aviation Logistics School Fort Eustis, Virginia 23604-5439 4 Credit Hours Edition Date: August 1994 SUBCOURSE OVERVIEW We designed this subcourse to provide instruction on the science of hydraulics, an explanation of hydraulic principles, and a study of the fluids used in aircraft hydraulic systems. You will also be introduced to the fundamentals of hydraulic plumbing, techniques of fabricating tubes and hoses, principles of installing these lines, and use of seals and gaskets to control leakage in plumbing systems. The time was early in the 1920s. From a grassy field on one of the aerodromes of that era, a young pilot of the Army Air Corps was preparing to take up a recently developed aircraft. He had been anxious to test-fly this model because it had the first retractable landing gear. He recalled the biplanes of World War I from which the landing gear jutted like the legs of a chicken. Now, if the gear could be retracted out of the airstream, power could be saved and greater speeds attained. After becoming airborne, the pilot reached down for the retraction handle and started cranking. It was a fatiguing and sluggish process, but sure enough the gear came up. Today, huge jets are scarcely airborne before landing gear weighing thousands of pounds is retracted by the mere push of a button and the hydraulic system is activated, effortlessly tucking these assemblies into the fuselage. This text deals with the aircraft hydraulic system. Hydraulics have done more than replace the hand crank for landing gear retraction of the post-World War I aircraft. It has, in essence, made modern day aviation possible. This subcourse is to be completed on a self-study basis. You will grade your lessons as you complete them using the lesson answer keys which are enclosed. If you have answered any question incorrectly, study the question reference shown on the answer key and evaluate all possible solutions. There are no prerequisites for this subcourse. This subcourse reflects the doctrine which was current at the time it was prepared. In your own work situation, always refer to the latest publications. Unless otherwise stated, the masculine gender of singular pronouns is used to refer to both men and women. TERMINAL LEARNING OBJECTIVE ACTION: You will demonstrate a knowledge of the basic concepts, applications, and characteristics of the hydraulic system including the lines, hoses, fluids, and other components which make the system work. CONDITIONS: You will use the material in this subcourse. STANDARD: You must correctly answer a minimum of 70 percent of the questions on the subcourse examination to pass this subcourse. End of Preview. RETURN to Military Titles Index
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