Applied aeronautics; the airplane - Beeldbibliotheek

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12 APPLIED AERONAUTICSthroTigli still air. The special apparatus used was mounted on the end ofa revolvinii arm driven by a steam engine as is shown in Fi.c 2. Thechronograph, a recording instrument, was used to measure the velocity'or number of revolutions of the table in a given time.By such a method as that shown in Fig. 1, and that of ProfessorLangley, it is easy to see that the laws of pressure and velocity can bedetermined readily. Methods such as these have been -used in determiningthat the rvind resistance varies as the square of the velocity.In other words, if the velocity is doubled it follows that the resistanceis increased four times, or if velocity is five times as great, the windresistance istwenty-five times as large.Constant ValuesIt would therefore seem to need no experimentation to prove that ifwe increase the surface B (Fig. 1) we would increase the pressure indirect proportion to the increase in surface area. Now if we were toincrease both the velocity and the area of surface, we would increase thepressure proportionally to the product of the square of the velocity andthe area of the surface. Thus if we were to raise the velocity of the airthree times, the resistance would be increased nine times, and if wethen doubled the surface we would double the resistance, which hasalreadv been increased nine times, making a total increase of eighteenfold.Fig. 1— Elementary apparatus for studying huts of wind resistance
—THEORY OF FLIGHT 133/c/e £'/e\/'af''/b/7 of^/7/r//h^ >^r/?7Fig. 2Prof. Langlei/'.'^ ajtimratus for inrcs!ti(i
Page 1 and 2: . iiijii | i»iii 1 1 mENGINEERINGL
Page 5: APPLIED AERONAUTICS— THE AIRPLANE
Page 9 and 10: 527090Cvll.n^in> ermglibraiyPREFACE
Page 11 and 12: —CONTENTSPU(JCChapter 1Theory of
Page 13: APPLIED AERONAUTICS— THE AIRPLANE
Page 17 and 18: —THEORY OF FLIGHT 15The exact val
Page 19 and 20: NTHEORY OF FLIGHT 17
Page 21 and 22: —THEORY OF FLIGHT 19This simple e
Page 23 and 24: ——THEORY OF FLIGHT 21Fifj. 11Fr
Page 25 and 26: —THEORY OF FLIGHT 23plane, howeve
Page 27 and 28: :—THEORY OF FLIGHT ^:5Figs. 1(5 a
Page 29 and 30: :THEORY OF FLIGHT 27keeping the sur
Page 31 and 32: THEORY OF FLIGHT 29that tlie eii.ui
Page 33 and 34: —THEORY OF FLIGHT 31liver at that
Page 35 and 36: m)THEORY OF FLIGHT 33^300ZOOi"^/oo^
Page 37 and 38: —THEORY OF FLIGHT 35Cenferof\ Cen
Page 39 and 40: —THEORY OF FLIGHTZ7iioniml positi
Page 41 and 42: Chapter 2TYPES OF MACHINESGeneral d
Page 43 and 44: ::TYPES OF MACHINES 41prime requisi
Page 45 and 46: —Chapter 3SHIPPING, UNLOADING AND
Page 47 and 48: SHIPPING, UNLOADING AND ASSEMBLING
Page 49 and 50: RIGGING 47The fuselage is usually c
Page 52 and 53: Ce^/ff/»- /Sv7ff/Fig. 31Hhomnij pr
Page 54 and 55: 50 APPLIED AERONAUTICSThe various l
Page 56 and 57: S2APPLIED AERONAUTICS
Page 58 and 59: 54 APPLIED AERONAUTICSNearly all wo
Page 60 and 61: —:56 APPLIED AERONAUTICSstrengtli
Page 62 and 63: 58 APPLIED AERONAUTICSwith harness
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Chapter 5ALIGNMENTFuselage alignmen
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:62 APPLIED AERONAUTICSAlignment of
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— —64 APPLIED AERONAUTICSSpiht
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66 APPLIED AERONAUTICSThe distance
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—68 APPLIED AERONAUTICSSpirit Lev
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——70 APPLIED AERONAUTICSAll tii
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Chapter 6CARE AND INSPECTIONCleanli
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::—:—74 APPLIED AERONAUTICSEach
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:76 APPLIED AERONAUTICSNote : Contr
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Chapter 7MINOR REPAIRSPatching hole
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:80 APPLIED AERONAUTICSJoininf/ of
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Chapter 8INSTRUMENTSCompass—Magne
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—84 APPLIED AERONAUTICSThe gradua
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—86 APPLIED AERONAUTICSCorrection
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88 APPLIED AERONAUTICS1. Place the
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—90 APPLIED AERONAUTICSA Napier d
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92 APPLIED AERONAUTICSliis error. l
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94 APPLIED AERONAUTICSaiiisni neces
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—96 APPLIED AERONAUTICSThere is a
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—98 APPLIED AERONAUTICSopeuing or
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—100 APPLIED AERONAUTICSFuj. 61Hi
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—102 APPLIED AERONAUTICSF'hi. 63
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—104 APPLIED AERONAUTICSAAfoB ful
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Chapter 9NOMENCLATURE FOR AERONAUTI
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;108 APPLIED AERONAUTICSThe axis pe
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noAPPLIED AERONAUTICSCAPACITY-CARRY
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112 APPLIED AERONAUTICSDRIP CLOTH
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114 APPLIED AERONAUTICSFull—The m
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116 APPLIED AERONAUTICSRAKE—The a
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118 APPLIED AERONAUTICSSTABILIZING
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120 APPLIED AERONAUTICSYAW—To yaw
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UNIVERSITY OF CALIFORNIA LIBRARYLos
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