"The Curtiss V 1400 is similar in type its predecessor the D 12 The V 1400 to meet the requirements for an engine of about 500 horsepower of minimum weight with great reliability The bore is 4.875 inches stroke 6.15 inches compression ratio 5.5 to 1 The engine is rated at 510 horsepower at 2,100 rpm Its weight is 660 pounds or 1.3 pounds per horsepower However the engine is said to deliver 619 horsepower at 2,500 rpm or one horsepower for each 1.07 pounds of weight Even at 1.3 pounds of weight per horsepower it is the lightest engine of its power in successful use at present It is stated that this engine is 75 pounds lighter than its nearest competitor in the 500 horsepower class Both the United States Army and Navy racing planes entered in the Pulitzer and Schneider cup races of 1925 were powered with this engine and new world's speed records were established in both races." Text from the The Purdue Engineer, Volumes 18-22 - Page 4 , AIRCRAFT ENGINES Villiam A Bevan Major Air Service Reserve.
No comments:
Post a Comment