±´¿Çµç×ÓÊé > Ó¢ÎÄÔ­Öøµç×ÓÊé > the mastery of the air(²Ù×Ý¿ÕÆø) >

µÚ40ÕÂ

the mastery of the air(²Ù×Ý¿ÕÆø)-µÚ40ÕÂ

С˵£º the mastery of the air(²Ù×Ý¿ÕÆø) ×ÖÊý£º ÿҳ4000×Ö

°´¼üÅÌÉÏ·½Ïò¼ü ¡û »ò ¡ú ¿É¿ìËÙÉÏÏ·­Ò³£¬°´¼üÅÌÉ쵀 Enter ¼ü¿É»Øµ½±¾ÊéĿ¼ҳ£¬°´¼üÅÌÉÏ·½Ïò¼ü ¡ü ¿É»Øµ½±¾Ò³¶¥²¿£¡
¡ª¡ª¡ª¡ªÎ´ÔĶÁÍꣿ¼ÓÈëÊéÇ©ÒѱãÏ´μÌÐøÔĶÁ£¡




or¡¡¡¡¡¡a¡¡¡¡¡¡pupil£©¡¡¡¡¡¡climb¡¡¡¡¡¡out£»¡¡¡¡¡¡the¡¡¡¡¡¡mechanics¡¡¡¡¡¡hang¡¡¡¡¡¡round¡¡¡¡¡¡and¡¡¡¡¡¡smoke¡¡¡¡¡¡cigarettes£»¡¡

unless¡¡they¡¡have¡¡to¡¡perform¡¡the¡¡arduous¡¡duties¡¡of¡¡filling¡¡up¡¡with¡¡petrol¡£¡¡In¡¡

due¡¡course¡¡another¡¡passenger¡¡and¡¡a¡¡pilot¡¡climb¡¡in£»¡¡a¡¡mechanic¡¡swings¡¡the¡¡

propeller£»¡¡¡¡¡¡and¡¡¡¡¡¡away¡¡¡¡¡¡they¡¡¡¡¡¡go¡¡¡¡¡¡quite¡¡¡¡¡¡happily¡£¡¡¡¡¡¡If¡¡¡¡¡¡anything¡¡¡¡¡¡casts¡¡¡¡¡¡loose¡¡¡¡¡¡they¡¡

come¡¡downand¡¡it¡¡is¡¡truly¡¡wonderful¡¡how¡¡many¡¡things¡¡can¡¡come¡¡loose¡¡or¡¡

break¡¡¡¡¡¡in¡¡¡¡¡¡the¡¡¡¡¡¡air¡¡¡¡¡¡without¡¡¡¡¡¡anyone¡¡¡¡¡¡being¡¡¡¡¡¡killed¡£¡¡¡¡¡¡If¡¡¡¡¡¡some¡¡¡¡¡¡thing¡¡¡¡¡¡breaks¡¡¡¡¡¡in¡¡

landing£»¡¡¡¡¡¡and¡¡¡¡¡¡does¡¡¡¡¡¡not¡¡¡¡¡¡actually¡¡¡¡fall¡¡¡¡¡¡out¡¡¡¡¡¡of¡¡¡¡¡¡place£»¡¡¡¡¡¡it¡¡¡¡¡¡is¡¡¡¡¡¡simply¡¡¡¡a¡¡¡¡¡¡matter¡¡¡¡¡¡of¡¡

luck¡¡whether¡¡anyone¡¡happens¡¡to¡¡see¡¡it¡¡or¡¡not¡£¡¨¡¡

¡¡¡¡¡¡¡¡¡¡This¡¡¡¡¡¡advice£»¡¡¡¡¡¡coming¡¡¡¡¡¡from¡¡¡¡¡¡a¡¡¡¡¡¡man¡¡¡¡¡¡with¡¡¡¡¡¡such¡¡¡¡¡¡wide¡¡¡¡¡¡experience¡¡¡¡¡¡of¡¡¡¡¡¡the¡¡

theory¡¡¡¡and¡¡¡¡¡¡practice¡¡¡¡¡¡of¡¡¡¡¡¡flying£»¡¡¡¡¡¡should¡¡¡¡¡¡surely¡¡¡¡be¡¡¡¡¡¡heeded¡¡¡¡¡¡by¡¡¡¡all¡¡¡¡¡¡those¡¡¡¡¡¡who¡¡

engage¡¡in¡¡deadly¡¡combat¡¡with¡¡the¡¡demons¡¡of¡¡the¡¡air¡£¡¡In¡¡the¡¡early¡¡days¡¡of¡¡



¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡143¡¡


¡­¡¡Page¡¡144¡­

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡THE¡¡MASTERY¡¡OF¡¡THE¡¡AIR¡¡



aviation£»¡¡pilots¡¡were¡¡unacquainted¡¡with¡¡the¡¡nature¡¡and¡¡method¡¡of¡¡approach¡¡

of¡¡treacherous¡¡wind¡¡gusts£»¡¡often¡¡when¡¡they¡¡were¡¡flying¡¡along¡¡in¡¡a¡¡steady£»¡¡

regular¡¡wind£»¡¡one¡¡of¡¡these¡¡gusts¡¡would¡¡strike¡¡their¡¡craft¡¡on¡¡one¡¡side£»¡¡and¡¡

either¡¡overturn¡¡it¡¡or¡¡cause¡¡it¡¡to¡¡over¡­bank£»¡¡so¡¡that¡¡it¡¡crashed¡¡to¡¡earth¡¡with¡¡a¡¡

swift¡¡side¡­slip¡¡through¡¡the¡¡air¡£¡¡

¡¡¡¡¡¡¡¡¡¡Happily¡¡the¡¡experience¡¡of¡¡those¡¡days£»¡¡though¡¡purchased¡¡at¡¡the¡¡cost¡¡of¡¡

many¡¡¡¡¡¡lives£»¡¡¡¡¡¡has¡¡¡¡¡¡taught¡¡¡¡¡¡makers¡¡¡¡¡¡of¡¡¡¡¡¡air¡­craft¡¡¡¡¡¡to¡¡¡¡¡¡design¡¡¡¡¡¡their¡¡¡¡¡¡machines¡¡¡¡¡¡on¡¡

more¡¡¡¡¡¡trustworthy¡¡¡¡¡¡lines¡£¡¡¡¡¡¡Pilots£»¡¡¡¡¡¡too£»¡¡¡¡¡¡have¡¡¡¡¡¡made¡¡¡¡¡¡a¡¡¡¡¡¡scientific¡¡¡¡¡¡study¡¡¡¡¡¡of¡¡¡¡¡¡air¡¡

eddies£»¡¡gusts£»¡¡and¡¡so¡¡on£»¡¡and¡¡the¡¡danger¡¡of¡¡flying¡¡in¡¡a¡¡strong¡¡or¡¡gusty¡¡wind¡¡

is¡¡comparatively¡¡small¡£¡¡



¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡144¡¡


¡­¡¡Page¡¡145¡­

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡THE¡¡MASTERY¡¡OF¡¡THE¡¡AIR¡¡



¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡CHAPTER¡¡XLVII¡¡Accidents¡¡and¡¡their¡¡Cause¡¡



¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡£¨Cont¡££©¡¡



¡¡¡¡¡¡¡¡¡¡Many¡¡people¡¡still¡¡think¡¡that¡¡if¡¡the¡¡engine¡¡of¡¡an¡¡aeroplane¡¡should¡¡stop¡¡

while¡¡¡¡¡¡the¡¡¡¡¡¡machine¡¡¡¡¡¡was¡¡¡¡¡¡in¡¡¡¡¡¡mid¡­air£»¡¡¡¡¡¡a¡¡¡¡¡¡terrible¡¡¡¡¡¡disaster¡¡¡¡¡¡would¡¡¡¡¡¡happen¡£¡¡All¡¡

petrol¡¡¡¡¡¡¡¡engines¡¡¡¡¡¡¡¡may¡¡¡¡¡¡¡¡be¡¡¡¡¡¡described¡¡¡¡¡¡¡¡as¡¡¡¡¡¡fickle¡¡¡¡in¡¡¡¡¡¡their¡¡¡¡behaviour£»¡¡¡¡¡¡¡¡¡¡and¡¡¡¡¡¡so¡¡

complicated¡¡is¡¡their¡¡structure¡¡that¡¡the¡¡best¡¡of¡¡them¡¡are¡¡given¡¡to¡¡stopping¡¡

without¡¡any¡¡warning¡£¡¡Aeroplane¡¡engines¡¡are¡¡far¡¡superior¡¡in¡¡horse¡­power¡¡to¡¡

those¡¡fitted¡¡to¡¡motorcars£»¡¡and¡¡consequently¡¡their¡¡structure¡¡is¡¡more¡¡intricate¡£¡¡

But¡¡¡¡¡¡if¡¡¡¡¡¡an¡¡¡¡¡¡airman's¡¡¡¡¡¡engine¡¡¡¡¡¡suddenly¡¡¡¡¡¡stopped¡¡¡¡¡¡there¡¡¡¡¡¡would¡¡¡¡¡¡be¡¡¡¡¡¡no¡¡¡¡¡¡reason¡¡

whatever¡¡¡¡¡¡why¡¡¡¡¡¡he¡¡¡¡¡¡should¡¡¡¡¡¡¡¡¡¡¡¡¡¡tumble¡¡¡¡¡¡down¡¡¡¡¡¡¡¡¡¡¡¡head¡¡¡¡¡¡first¡¡¡¡and¡¡¡¡¡¡break¡¡¡¡¡¡his¡¡¡¡¡¡neck¡£¡¡

Strange¡¡to¡¡say£»¡¡too£»¡¡the¡¡higher¡¡he¡¡was¡¡flying¡¡the¡¡safer¡¡he¡¡would¡¡be¡£¡¡

¡¡¡¡¡¡¡¡¡¡All¡¡¡¡¡¡machines¡¡¡¡¡¡have¡¡¡¡¡¡what¡¡¡¡¡¡is¡¡¡¡¡¡called¡¡¡¡¡¡a¡¡¡¡¡¡GLIDING¡¡¡¡¡¡ANGLE¡£¡¡¡¡¡¡When¡¡¡¡¡¡the¡¡

designer¡¡plans¡¡his¡¡machine¡¡he¡¡considers¡¡the¡¡distribution¡¡of¡¡the¡¡weight¡¡or¡¡

the¡¡¡¡¡¡engine£»¡¡¡¡¡¡pilot¡¡¡¡¡¡and¡¡¡¡¡¡passengers£»¡¡¡¡¡¡of¡¡¡¡¡¡the¡¡¡¡¡¡petrol£»¡¡¡¡¡¡aeronautical¡¡¡¡¡¡instruments£»¡¡

and¡¡planes£»¡¡so¡¡that¡¡the¡¡aeroplane¡¡is¡¡built¡¡in¡¡such¡¡a¡¡manner¡¡that¡¡when¡¡the¡¡

engine¡¡¡¡¡¡¡¡¡¡stops£»¡¡¡¡¡¡and¡¡¡¡¡¡the¡¡¡¡¡¡nose¡¡¡¡¡¡of¡¡¡¡the¡¡¡¡¡¡machine¡¡¡¡¡¡¡¡¡¡is¡¡¡¡turned¡¡¡¡¡¡downwards£»¡¡¡¡¡¡¡¡¡¡¡¡¡¡the¡¡

aeroplane¡¡of¡¡its¡¡own¡¡accord¡¡takes¡¡up¡¡its¡¡gliding¡¡angle¡¡and¡¡glides¡¡to¡¡earth¡£¡¡

¡¡¡¡¡¡¡¡¡¡Gliding¡¡angles¡¡vary¡¡in¡¡different¡¡machines¡£¡¡If¡¡the¡¡angle¡¡is¡¡one¡¡in¡¡twelve£»¡¡

this¡¡would¡¡mean¡¡that¡¡if¡¡the¡¡glide¡¡wave¡¡commenced¡¡at¡¡a¡¡height¡¡of¡¡1¡¡mile£»¡¡

and¡¡¡¡¡¡continued¡¡in¡¡¡¡¡¡a¡¡straight¡¡¡¡¡¡line£»¡¡¡¡¡¡the¡¡¡¡pilot¡¡¡¡¡¡would¡¡¡¡¡¡come¡¡¡¡¡¡to¡¡¡¡¡¡earth¡¡¡¡¡¡12¡¡¡¡¡¡miles¡¡

distant¡£¡¡We¡¡are¡¡all¡¡familiar¡¡with¡¡the¡¡gradients¡¡shown¡¡on¡¡railways¡£¡¡There¡¡we¡¡

see¡¡¡¡¡¡displayed¡¡¡¡¡¡¡¡¡¡on¡¡¡¡¡¡short¡¡¡¡¡¡sign¡­posts¡¡¡¡¡¡such¡¡¡¡¡¡¡¡notices¡¡¡¡¡¡as¡¡¡¡¡¡¡¨1¡¡¡¡in¡¡¡¡50¡¨£»¡¡¡¡¡¡with¡¡¡¡¡¡the¡¡

opposite¡¡¡¡¡¡arms¡¡¡¡¡¡¡¡¡¡¡¡of¡¡¡¡the¡¡¡¡¡¡post¡¡¡¡pointing¡¡¡¡¡¡¡¡upwards¡¡¡¡¡¡and¡¡¡¡¡¡¡¡¡¡¡¡downwards¡£¡¡¡¡¡¡¡¡¡¡¡¡This£»¡¡¡¡¡¡of¡¡

course£»¡¡means¡¡that¡¡the¡¡slope¡¡of¡¡the¡¡railway¡¡at¡¡that¡¡particular¡¡place¡¡is¡¡1¡¡foot¡¡

in¡¡a¡¡distance¡¡of¡¡50¡¡feet¡£¡¡

¡¡¡¡¡¡¡¡¡¡One¡¡¡¡¡¡in¡¡¡¡¡¡twelve¡¡¡¡¡¡may¡¡¡¡¡¡be¡¡¡¡¡¡described¡¡¡¡¡¡as¡¡¡¡¡¡the¡¡¡¡¡¡natural¡¡¡¡¡¡gradient¡¡¡¡¡¡which¡¡¡¡¡¡the¡¡

machine¡¡¡¡¡¡automatically¡¡¡¡¡¡makes¡¡¡¡¡¡when¡¡¡¡¡¡engine¡¡¡¡¡¡power¡¡¡¡¡¡is¡¡¡¡¡¡cut¡¡¡¡¡¡off¡£¡¡¡¡¡¡It¡¡¡¡¡¡will¡¡¡¡¡¡be¡¡

evident¡¡why¡¡it¡¡is¡¡safer¡¡for¡¡a¡¡pilot¡¡to¡¡fly£»¡¡say£»¡¡at¡¡four¡¡or¡¡five¡¡thousand¡¡feet¡¡

high¡¡than¡¡just¡¡over¡¡the¡¡tree¡­tops¡¡or¡¡the¡¡chimney¡­pots¡¡of¡¡towns¡£¡¡Suppose£»¡¡

for¡¡example£»¡¡¡¡¡¡the¡¡¡¡¡¡machine¡¡has¡¡¡¡¡¡a¡¡gliding¡¡angle¡¡¡¡¡¡of¡¡one¡¡in¡¡¡¡¡¡twelve£»¡¡¡¡¡¡and¡¡¡¡¡¡that¡¡

when¡¡at¡¡an¡¡altitude¡¡of¡¡about¡¡a¡¡mile¡¡the¡¡engine¡¡should¡¡stop¡£¡¡We¡¡will¡¡assume¡¡

that¡¡at¡¡the¡¡time¡¡of¡¡the¡¡stoppage¡¡the¡¡pilot¡¡is¡¡over¡¡a¡¡forest¡¡where¡¡it¡¡is¡¡quite¡¡



¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡145¡¡


¡­¡¡Page¡¡146¡­

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡THE¡¡MASTERY¡¡OF¡¡THE¡¡AIR¡¡



impossible¡¡to¡¡land¡£¡¡Directly¡¡the¡¡engine¡¡stopped¡¡he¡¡would¡¡change¡¡the¡¡angle¡¡

of¡¡the¡¡elevating¡¡plane£»¡¡so¡¡that¡¡the¡¡aeroplane¡¡¡¡¡¡would¡¡naturally¡¡fall¡¡into¡¡its¡¡

gliding¡¡¡¡¡¡angle¡£¡¡¡¡¡¡The¡¡¡¡¡¡craft¡¡¡¡¡¡would¡¡¡¡¡¡at¡¡¡¡¡¡once¡¡¡¡¡¡settle¡¡¡¡¡¡itself¡¡¡¡¡¡into¡¡¡¡¡¡a¡¡¡¡¡¡forward¡¡¡¡¡¡and¡¡

slightly¡¡downward¡¡glide£»¡¡and¡¡the¡¡airman£»¡¡from¡¡his¡¡point¡¡of¡¡vantage£»¡¡would¡¡

be¡¡able¡¡to¡¡see¡¡the¡¡extent¡¡of¡¡the¡¡forest¡£¡¡We¡¡will¡¡assume¡¡that¡¡the¡¡aeroplane¡¡is¡¡

gliding¡¡¡¡¡¡¡¡¡¡in¡¡¡¡a¡¡¡¡¡¡northerly¡¡¡¡¡¡¡¡direction£»¡¡¡¡¡¡¡¡and¡¡¡¡¡¡¡¡that¡¡¡¡the¡¡¡¡¡¡country¡¡¡¡¡¡¡¡¡¡is¡¡¡¡almost¡¡¡¡¡¡¡¡as¡¡

unfavourable¡¡¡¡¡¡for¡¡¡¡¡¡landing¡¡¡¡¡¡there¡¡¡¡¡¡as¡¡¡¡¡¡over¡¡¡¡¡¡the¡¡¡¡¡¡forest¡¡¡¡¡¡itself¡£¡¡¡¡¡¡In¡¡¡¡¡¡fact£»¡¡¡¡¡¡we¡¡¡¡¡¡will¡¡

imagine¡¡¡¡¡¡¡¡¡¡¡¡an¡¡¡¡¡¡extreme¡¡¡¡¡¡¡¡¡¡case£»¡¡¡¡¡¡¡¡where¡¡¡¡¡¡¡¡the¡¡¡¡¡¡airman¡¡¡¡¡¡¡¡¡¡is¡¡¡¡over¡¡¡¡¡¡¡¡country¡¡¡¡¡¡¡¡¡¡quite¡¡

unsuitable¡¡for¡¡landing¡¡except¡¡toward¡¡the¡¡south£»¡¡that¡¡is£»¡¡exactly¡¡opposite¡¡to¡¡

the¡¡¡¡¡¡direction¡¡¡¡¡¡in¡¡¡¡¡¡which¡¡¡¡¡¡he¡¡¡¡¡¡starts¡¡¡¡¡¡to¡¡¡¡¡¡glide¡£¡¡¡¡¡¡Fortunately£»¡¡¡¡¡¡there¡¡¡¡¡¡is¡¡¡¡¡¡no¡¡¡¡¡¡reason¡¡

why¡¡he¡¡should¡¡not¡¡steer¡¡his¡¡machine¡¡right¡¡round¡¡in¡¡the¡¡air£»¡¡even¡¡though¡¡the¡¡

only¡¡power¡¡is¡¡that¡¡derived¡¡from¡¡the¡¡force¡¡of¡¡gravity¡£¡¡His¡¡descent¡¡would¡¡be¡¡

in¡¡an¡¡immense¡¡slope£»¡¡extending¡¡10¡¡or¡¡12¡¡miles¡¡from¡¡the¡¡place¡¡where¡¡the¡¡

engine¡¡stopped¡¡working¡£¡¡He¡¡would¡¡therefore¡¡be¡¡able¡¡to¡¡choose¡¡a¡¡suitable¡¡

landing¡­place¡¡and¡¡reach¡¡earth¡¡quite¡¡safely¡£¡¡

¡¡¡¡¡¡¡¡¡¡But¡¡supposing¡¡the¡¡airman¡¡to¡¡be¡¡flying¡¡about¡¡a¡¡hundred¡¡yards¡¡above¡¡the¡¡

forest¡­an¡¡¡¡¡¡¡¡¡¡occurrence¡¡¡¡¡¡¡¡¡¡not¡¡¡¡¡¡likely¡¡¡¡¡¡to¡¡¡¡happen¡¡¡¡¡¡¡¡with¡¡¡¡¡¡a¡¡¡¡¡¡skilled¡¡¡¡airman£»¡¡¡¡¡¡¡¡¡¡who¡¡

would¡¡probably¡¡take¡¡an¡¡altitude¡¡of¡¡nearly¡¡a¡¡mile¡£¡¡Almost¡¡before¡¡he¡¡could¡¡

have¡¡time¡¡to¡¡alter¡¡his¡¡elevating¡¡plane£»¡¡and¡¡certainly¡¡long¡¡before¡¡he¡¡could¡¡

reach¡¡open¡¡ground£»¡¡he¡¡would¡¡be¡¡on¡¡the¡¡tree¡­tops¡£¡¡

¡¡¡¡¡¡¡¡¡¡It¡¡is¡¡thought¡¡that¡¡in¡¡the¡¡near¡¡future¡¡air¡­craft¡¡will£»¡¡be¡¡fitted¡¡with¡¡two¡¡or¡¡

more¡¡motors£»¡¡so¡¡that¡¡when¡¡one¡¡fails¡¡the¡¡other¡¡will¡¡keep¡¡the¡¡machine¡¡on¡¡its¡¡

course¡£¡¡This¡¡¡¡¡¡has¡¡been¡¡¡¡¡¡found¡¡necessary¡¡¡¡in¡¡¡¡¡¡Zeppelin¡¡¡¡¡¡air¡­ships¡£¡¡¡¡In¡¡¡¡¡¡an¡¡¡¡¡¡early¡¡

Zeppelin¡¡model£»¡¡which¡¡was¡¡provided¡¡with¡¡one¡¡engine¡¡only£»¡¡the¡¡insufficient¡¡

power¡¡caused¡¡the¡¡pilot¡¡to¡¡descend¡¡on¡¡unfavourable¡¡ground£»¡¡and¡¡his¡¡vessel¡¡

was¡¡wrecked¡£¡¡More¡¡recent¡¡types¡¡of¡¡Zeppelins¡¡are¡¡fitted¡¡with¡¡three¡¡or¡¡four¡¡

engines¡£¡¡Experiments¡¡have¡¡already¡¡been¡¡made¡¡with¡¡the¡¡dual¡­engine¡¡plant¡¡

for¡¡aeroplanes£»¡¡notably¡¡by¡¡Messrs¡£¡¡Short¡¡Brothers£»¡¡of¡¡Rochester£»¡¡and¡¡the¡¡

tests¡¡have¡¡given¡¡every¡¡satisfaction¡£¡¡

¡¡¡¡¡¡¡¡¡¡There¡¡¡¡¡¡is¡¡¡¡¡¡little¡¡¡¡¡¡doubt¡¡¡¡¡¡that¡¡¡¡¡¡if¡¡¡¡¡¡the¡¡¡¡¡¡large¡¡¡¡¡¡passenger¡¡¡¡¡¡aeroplane¡¡¡¡¡¡is¡¡¡¡¡¡made¡¡

possible£»¡¡¡¡¡¡¡¡¡¡and¡¡¡¡¡¡¡¡if¡¡¡¡parliamentary¡¡¡¡¡¡¡¡¡¡¡¡powers¡¡¡¡¡¡¡¡¡¡have¡¡¡¡¡¡¡¡to¡¡¡¡be¡¡¡¡¡¡obtained¡¡¡¡¡¡¡¡¡¡for¡¡¡¡¡¡the¡¡

formation¡¡of¡¡companies¡¡for¡¡passenger¡¡traffic¡¡by¡¡aeroplane£»¡¡it¡¡will¡¡be¡¡made¡¡

compulsory¡¡¡¡¡¡to¡¡¡¡¡¡fit¡¡¡¡¡¡machines¡¡¡¡¡¡with¡¡¡¡¡¡two¡¡¡¡¡¡or¡¡¡¡¡¡more¡¡¡¡¡¡engines£»¡¡¡¡¡¡driving¡¡¡¡¡¡three¡¡¡¡¡¡or¡¡

four¡¡distinct¡¡propellers¡£¡¡One¡¡of¡¡the¡¡engines¡¡would¡¡possibly¡¡be¡¡of¡¡inferior¡¡



¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡146¡¡


¡­¡¡Page¡¡147¡­

¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡THE¡¡MASTERY¡¡OF¡¡THE¡¡AIR¡¡



power£»¡¡and¡¡used¡¡only¡¡in¡¡cases¡¡of¡¡emergency¡£¡¡

¡¡¡¡¡¡¡¡¡¡Still¡¡another¡¡cause¡¡of¡¡accident£»¡¡which¡¡in¡¡some¡¡cases¡¡has¡¡proved¡¡fatal£»¡¡

is¡¡the¡¡taking¡¡of¡¡unnecessary¡¡risks¡¡when¡¡in¡¡the¡¡air¡£¡¡This¡¡has¡¡happened¡¡more¡¡

in¡¡¡¡¡¡America¡¡¡¡¡¡and¡¡¡¡¡¡in¡¡¡¡¡¡France¡¡¡¡¡¡than¡¡¡¡¡¡in¡¡¡¡¡¡Great¡¡¡¡¡¡Britain¡£¡¡¡¡¡¡An¡¡¡¡¡¡airman¡¡¡¡¡¡may¡¡¡¡¡¡have¡¡

performed¡¡¡¡¡¡a¡¡¡¡¡¡very¡¡¡¡difficult¡¡¡¡¡¡and¡¡¡¡¡¡daring¡¡¡¡¡¡feat¡¡¡¡¡¡at¡¡some¡¡¡¡¡¡flying¡¡¡¡¡¡exhibition¡¡¡¡¡¡and¡¡

the¡¡papers¡¡belauded¡¡his¡¡courage¡£¡¡A¡¡rival¡¡airman£»¡¡not¡¡wishing¡¡to¡¡be¡¡outdone¡¡

in¡¡skill¡¡or¡¡courage£»¡¡immediately¡¡tries¡¡either¡¡to¡¡repeat¡¡the¡¡performance¡¡or¡¡to¡¡

perform¡¡an¡¡even¡¡more¡¡difficult¡¡ev

·µ»ØĿ¼ ÉÏÒ»Ò³ ÏÂÒ»Ò³ »Øµ½¶¥²¿ ÔÞ£¨0£© ²È£¨0£©

Äã¿ÉÄÜϲ»¶µÄ