Identifier: scientific-american-1904-08-27 (find matches)
Title: Scientific American Volume 91 Number 09 (August 1904)
Year: 1904 (1900s)
Authors:
Subjects: scientific portland cement american exhibit munn louis electric portland cement scientific american trunk pacific ten years american august average speed war department typewriting machine glass models grand trunk
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een 5.5-inch gunsapiece; but the one-half inch drop in caliber means abig drop in. striking energy and carrying power, andit is doubtful if the 5.5-inch guns were able to domuch effective work in this long-range fight. It is a question as to which squadron had the ad-vantage in the matter of speed. For although theJapanese ships were credited with from 21 to 22 knotstrial speed, they were not sheathed, and for somemonths they have been tied closely to the task ofwatching the Straits to prevent a junction of the PortArthur and Vladivostock squadrons; hence their bot-toms wereprobably veryfoul, and theirspeed not muchbetter thanthat of theRurik, or,say, about 15knots an hour.The immenseadvantage ofsheathingand copperingwas shown atthe close ofthe fight, whenthe Gromo-boi and Ros-sia, whichshould havebeen capturedor sunk by thevictorious Jap-anese, wereable to drawaway andmake goodtheir escape toVladivo-stock. There is nonew lessontaught by thefight. We sim-ply see the ac-cepted theories
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BALDWINS AIRSHIP ABOUT TO ASCEND. various angles. After being up nearly an hour, Capt. Baldwin brought his ship back to the starting point, and safely descended to earth. These trials were witnessed by great crowds of spectators. Subsequent trials have also been made, when it wasdemonstrated that in every revolution of the largepropeller, and in every move of the steering gear, andof the weights which raise or lower the vessel at will,the plans of the inventor have been carried into effect.The large propeller, having two metallic blades, andnearly 6 feet in diameter, instead of being placed at thestern, is located at the bow of the frame or car, as inmost recent airships of this type. In this manner theairship, instead of being pushed through the air, ispulled. This facilitates the steering as well as rais-ing or lowering the ship. The balloon, by means of which the whole machineis raised, is somewhat blunt cigar-shaped. It meas-ures 54 feet inlength and :■:17 feet in di-ameter in t

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