Richmond Palladium (Daily), Volume 43, Number 126, 8 April 1918 — Page 3

THE RICHMOND PALLADIUM AND SUN-TELEGRAM, MONDAY, APRIL 8, ,1918

PAGE THREE.

EXPERTS STRIP J MYSTERY FROM "MIRACLE" GUN Explain by Figures How Germans Long Range Cannon Works. . v By JAMES O'DONNELL BENNETT In the Chictgo Tribune. STOCKHOLM, April 8. The opinion is increasing among Swedish artillerists who stand high in European military circles that the ' Germans' new long range cannon presents no problems that cannot bo solved by known ballistic principles. All a?ree it is no occasion for any Jules Verne flights of imagination in accounting for the new gun's success, and that Us moral effect on a great capital is by no means negligible. The consensus is that it is a real cannon employing a projectile and not a selfdriving air torpedo. Summing up the deductions of the safest and best informed men, their conclusions run thus: " If the projectile is llred at an angle of from 60 to 55 degrees it soon attains a height where the air is so thin that the air friction can be practically disregarded and calculations made almost as if dealing with a vacuum. Shell Rises to Vacuum. At a height of twelve and one-half miles atmospheric pressure is as low as forty-two millimeters, and even though the temperature here is low ( 38 degrees C), the air resistance has sunk to about 6 per cent, of the

When under these conditions the projectile of about twenty-five miles, then throughout the longest period of

Its journey the air resistance will be at a minimum. It is now known that a twenty-four centimeter shell about eight and a half inches is used, hence it appears that the Germans have chosen as a point of departure for this shell a fifteen and one-half inch cannon, the length of which is fifty times that of the caliber In other words, nearly sixty-six feet. Cannon Within a Cannon. In the gun they have placed an inner tube with a caliber of eight and one-half infhes, thus the gun would have the strength to witstand enormous pressure during firing and have fcthe same amount of space for the charge as a fifteen and one-half inch cannon has. This leaves room for a charge of 836 pounds of speclaly suitable powder and the cannon can be made about eighty timj as long as the caliber. Thus the projectile receives a propuplslve power of about 40,000 metric tons, and Its eight and one-half inch projectile, weighing 440 pounds, obtains an initial velocity of about 6.500 feet per second. In order to obtain a range of seventy-five miles in a vacuum the projectile requires an initial speed of 3,510 feet per second, with a reparture angle of forty-five degrees. Pierces Strata of Air. It may therefore be imagined that the projectile will be released at a somewhat larger elevation so that the dense strata of air it has to pass through will be as short as possible. If we then conceive that the projectile's course, on reaching at a height of twelve and one-half miles, has an inclination toward the horizontal plane of forty-five degrees, it requires a remaining velocity of about 3,088 feet a second to give it the total range of seventy-five miles from the point of departure to the target. Although guided by the preceding ballistic tables, we can calculate the "loss of velocity up to a height of twelve and one-half miles, we know this loss chiefly depends on air resistance. Must Overcome Gravity. Gravity deprives the projectile of a velocity of about 1,300 feet a second. The gun upon which we have based our calculations gives its projectile

an Initial velocity of 6,500 feet. When the projectile shall have reached an altitude of twelve and onehalf miles. It must still travel at a velocity of 8,088 feet a second. This leaves the liberal allowance of 3,412 i feet for tho demands of gravity and ale resistance. Gravity wil! absorb 1,300 feet of this allowance, and if air resistance does not absorb more than 1,950 feet, the projectile can reach its destination. May Use Larger Gun. If it requires a greater allowance, then the 86 inch tube must be placed in a larger cannon than the 13 gun, upon the basis of which we have been calculating, such as one of the 16.38 inch guns or perhaps one still larger. In the present state of secrecy naturally enveloping the new German gun these deductions cannot be proved, but tfiat the problem can be solved without any recourse to monstrous dimensions is certain. Undoubtedly it was in such a manner that Krupp went to work. Concerning the destructive power of this gun's one meter long projectile, experts believe the projectile probably would pass from the roof of a high building to its cellar, blowing out its walls and destroying gas, sewer, and water pipes and electric wires in the streets. PLAN OF KRUPP MANAGER AMSTERDAM, April 8. It was Prof. Fritz Rausenberger, an artillerist, manager of the Krupp works and builder of the famous forty-two centimeter gun, who planned the giant long range gun, according to the correspondent at Frankfort of the Nieuwe Rotterdanische Courant. The professor witnessed the first bombardment of Paris with the gun. Prof. Rausenberger in an interview printed in the Berliner Tageblatt in February, 1916, declared that artillery so large and powerful that it would be possible to bombard England from the continent would be the certain product of the near future.

I Vertical Shooting in Favor.

The co-director of the Krupp works declared the day of flat trajectory pieces was passed and that mortars and vertical shooting artillery would be in increasing demand. This, he said, was because the nature of modern war fare had almost done away with the necessity of shooting horizontally, it being possible to reach horzontal trench lines only by shots from cannon shooting vertically. Modern artillery, notwithstanding its tremendous strides', the professor said, had in no wise reached the limits of its possibilities either in effectiveness or in carrying power. The cannon of the future, he believed, would be able to penetrate the strongest fortifications and penetrate even "England's shimmering, ocean armament, the old proud wall which for centuries has protected it from the continent."

AWARDED CONTRACT

EATON. O., April 8 C. A. Filbert & Co. of Eaton, have been awarded a contract by the county commissioners to furnish 80 rubber mats at 50 cents each, for the new county court house which is nearing completion.

Cambridge City, Ind.

The following drafted men from Division No. 2, in charge of Walter Henderson Beck of Milton, left for Fort Hamilton, New York, Wednesday afternoon: ' Thomas Lafferty, Cambridge City; Homer Minor, Cambridge City; Clifford Jacobs, Cambridge City; Ralph McConnaughey, Hagerstown; Harry Lee Martin, Cam bridge City; Ralph Ryan, Centerville; Addie Mettert, Cambridge City; Walter Henderson Beck, Milton; Horace Carlie Henderson, Centerville; George Earl Crawley, Milton. They were accompanied to the train by a procession of citizens in the following order: Milton band, Company I State Militia, drafted men, boy scouts, children of the public schools, citizens in general, to the number of one thousand or more. Mr. and Mrs. George Doney of St. Louis, Missouri, were the guests over Sunday of the former's father, George Doney, Sr., and other relatives .... Rev. M. J. Gorman has returned after a visit of several days with his sister, Mrs. Morrow, and family of Muncie Mrs. Carl Beyer of Richmond was the guest Monday of Mrs. Claude Gifford and other Cambridge City friends.... Prof. Lockwood of the high school was called to Laurel, Ind., Tuesday, on account of the death of his sister .... Raymond Ellis has sold his property, corner of Green and Third streets, to Simeon Crockett. Consid eration $1,500. . .Mrs. Mary Mauk and daughter, Mrs. Ada Dennis, have returned after a visit of several days with friends at New Paris, O her mother and other relatives Mrs. J. C. Dodson who has been quite ill the past week is reported as convalescent ...Mrs. Manzella Conway and daughter, Margaret, have returned after several months spent in Jacksonville, Fla Edmund B. Newman, a corporal in the engineering corps, at Camp Taylor, was the guest of his parents, Mr. and Mrs. Virgil Newman, and sister. Miss Charlotte, over Sunday The Friday Night club met this week at the home of Miss Elizabeth Whelan. Mrs. Thomas Butler of Dublin read a paper on "The Japanese Army

and Navy;" Mrs. Thompson of Milton a paper on "Japanese Painting and Design". . .Mr. and Mrs. Charles Melhorn and son, Clarence, of Connersville were the guests Tuesday of Mr. and Mrs. B. F. Griffin. Clarence is in the naval service and is stationed at the Great Lakes Training Station.. ..Miss Janet Boyd has returned to her home at Greensfork after a few days spent with Mr. and Mrs. Roy Copeland.

REV. CRAMPTON RETURNS

EATON, O.. April 8 The Rev. Henry' Crampton, of Eaton, conducted services Sunday morning in tho Christian church. following the resignation and departure from Eaton of the Rev. R. L. Kirkland. Mr. Crampton is a former pastor of the local Christian church.

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