Analysis of Spark-ignition Engine Knock as Seen in Photographs Taken at 200,000 Frames a Second PDF Download
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Author: Cearcy D. Miller Publisher: ISBN: Category : Combustion Languages : en Pages : 26
Book Description
A motion-picture of the development of knock in a spark-ignition engine is presented, which consists of 20 photographs taken at intervals of 5 microseconds, or at a rate of 200,000 photographs a second, with an equivalent wide-open exposure time of 6.4 microseconds for each photograph. A motion picture of a complete combustion process, including the development of knock, taken at the rate of 40,000 photographs a second is also presented to assist the reader in orienting the photographs of the knock development taken at 200,000 frames per second are analyzed and the conclusion is made that the type of knock in the spark-ignition engine involving violent gas vibration originates as a self-propagating disturbance starting at a point in the burning or autoigniting gases and spreading out from that point through the incompletely burned gases at a rate as high as 6800 feet per second, or about twice the speed of sound in the burned gases. Apparent formation of free carbon particles in both the burning and the burned gas is observed within 10 microseconds after passage of the knock disturbance through the gases.
Author: Cearcy D. Miller Publisher: ISBN: Category : Combustion Languages : en Pages : 26
Book Description
A motion-picture of the development of knock in a spark-ignition engine is presented, which consists of 20 photographs taken at intervals of 5 microseconds, or at a rate of 200,000 photographs a second, with an equivalent wide-open exposure time of 6.4 microseconds for each photograph. A motion picture of a complete combustion process, including the development of knock, taken at the rate of 40,000 photographs a second is also presented to assist the reader in orienting the photographs of the knock development taken at 200,000 frames per second are analyzed and the conclusion is made that the type of knock in the spark-ignition engine involving violent gas vibration originates as a self-propagating disturbance starting at a point in the burning or autoigniting gases and spreading out from that point through the incompletely burned gases at a rate as high as 6800 feet per second, or about twice the speed of sound in the burned gases. Apparent formation of free carbon particles in both the burning and the burned gas is observed within 10 microseconds after passage of the knock disturbance through the gases.
Author: Jack Fischel Publisher: ISBN: Category : Ailerons Languages : en Pages : 612
Book Description
A collection of available test data on lateral control with full-span flaps is presented. The lateral-control effectiveness and hinge-moment data presented include the characteristics of spoiler devices and ailerons with retractable flaps. The basic data presented on the various flap and aileron combinations should facilitate the design of full-span-flap laterial-control arrangements. A discussion is given of the characteristics of the lateral-control devices considered and of the application of the data to specific airplane design.
Author: Cearcy D. Miller
Author: Cearcy D. Miller
Author: 
Author: 
Author: United States. National Advisory Committee for Aeronautics
Author: United States. National Advisory Committee for Aeronautics
Author: Jack Fischel
Author: 
Author: United States. National Advisory Committee for Aeronautics
Author: United States. National Advisory Committee for Aeronautics
Author: United States. National Advisory Committee for Aeronautics