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Aviation History
1918
1918 - 0516.PDF
MAY 9, 1918. balloon. An aeroplane depends entirely, for its ability to the tail,, the drag of the body, and theair screw thrust. Nowsustain itself and to alter its" direction or attitude, upon its these forces must all be balanced, total lift must be equal to speed relative to the air. . weight, and air screw thrust equal to tctal drag ; further, if, Consider an elementary aeroplane flying in a straight li:. e as it is most probable, the line of thrust is not coincident withat a constant speed and attitude to its flight path (Fig. 12). the line of total drag, then the line of total lift must lie at FORCES ON AEROPLANE IN STEADY HORIZONTAL FLIGHT W»fTOTAL WEIGHT " • LT«TOTAL UFT- SUM OF:- AEROKOIL LIFT, I_. VERTICAL REACTION on BODY, fa « TAIL, f_ * T«= PROPBLLER THRU6T. &T-TOTAL PRA6=&UM OF AIROFOIU DRAG. 600Y DRAQ, TAIL DRAS . FOR EQU1LIBRIUM LT*WT AEROPLANE IS CANTe». CONDITIONS PUB TO CANTINS. . HI • Ft G.I 2. The vertical forces acting on such a machine are the lift such a distance away from the total centre of gravity that of the aerofoils, the vertical force on the tail, the vertical the lift-weight couple will be equal to and of opposite sign to force on the body, and the total weight; the horizontal the thrust-drag couple, forces acting on it are the drag of the aerofoils, the drag of (To be concluded.) Austria's Crack Aviator Killed. ,--.,.. . AUSTRIA'S most famous fighting pilot, Lieut, von HillerSchonaich, has been killed in action on the Italian front. He was brought down by an Italian airman, and his body fellbehind the Austrian lines. Brave Air Raid Rescuers Rewarded. IT was announced on Saturday that the King has beenpleased to award the Albert Medal to Sub-Divisional Inspector Frederick Wright, and the King's Police Medal to PoliceConstables Robert Melton and Jesse Christmas, all of the Metropolitan Police Force, in recognition of their gallantryin saving life in October last. The circumstances are as follows :—• " On the occasion of an enemy air raid which took placeon October 19th, 1917, a bomb fell on two adjoining houses, killing 10 persons and imprisoning 18 under the wreckage.When helpers arrived it was found that some of the persons who were imprisoned in the basement of one of the houseswere alive, but the work of rescue was exceeding dangerous, for escaping gas in the basement became ignited and set fireto the debris above. Inspector Wright, with an axe, made a small opening in the floor over the basement, which was ina slanting and tottering condition, the joists which supported it being broken, and through this opening, though with muchdifficulty, 13 persons were rescued. " It was then ascertained that two children were left inthe basement, and Inspector Wright, with Police Constables Robert Melton and Jesse Christmas, dropped into the base-ment through the opening and searched for the children • under very dangerous conditions, In addition to the fumesfrom the escaping gas, which were suffocating, and the fire raging above, there was a possibility of a further movementof wreckage, which might have proved fatal to all below. The space was so confined that they were barely able to reachthe back of the premises. The children were found to be dead. " Inspector Wright, on reaching the open air, collapsed,overcome by the fumes, and by his exertions; but, aft.r medical care, he recovered sufficiently to be sent home.He returned to the scene of the disaster shortly after, and con- tinued his work of rescue throughout the night." Land for the Air Force. AN Order in Council has been made applying to the President of the Air Council with some modifications certain statutes which confer on the military authorities power to acquire, hold and manage land for the services under their control. The statutes dealt with include the Defence Acts, 1842, 1854, 1859 and i860, the Ordnance Board Transfer Act, 1855, the Militia (Lands and Buildings) Act, 1873, and the Military Lands Act, 1892. The Order may be cited as the Air Force (Application of Enactments) (No. 1) Order, 1918. Control of Timber. REPLYING in the House of Commons on May 2nd to Mr. Herbert Samuel who asked what action had been taken with respect to the recommendations of the Select Committee on National Expenditure for the session of 1917, Mr. Bonar Law gave the following information :•— Board of Trade.Action Taken. ~ ' " Arrangements have been made with— Operations of the Admiralty, the Air Ministry, and Timber Control other Departments concerned, and are Arrange- now in operation by which the Timberconsoli- Supply Department is supplying all dated purchase timber for direct Government require-should be framed in ments except certain special kinds of consultation with the timber required by the Admiralty andAdmiralty and Air Air Ministry, and the question of taking Ministry. over the supply of these is now under consideration. By the Timber Order, -1918, dated 25th April, all transactions relative to timber abroad by personsin this country are prohibited, except with the permission of the Controller ofTimber Supplies. A Successful Caproni Raid. IT became known in Rome on May 6th that squadrons ofItalian Caproni had dropped over nine tons of high explosives on the hydro-electric plant at Cavendine, ten kilcmetrestrom Trent, completely wrecking the plant This is important, as the plant was used for the electric railway leading to theItalian positions at Tonale, besides furnishing power and light to the Lower Trentino. Recommendation. Paragraphs 63-64. Board,ments for 514
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