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Aviation History
1918
1918 - 0101.PDF
JANUARY 24, igi8i "Ve For lo« speed: 40 miles per hour and 1100 revolutions per minute. For high speed: m miles per w ^ li0Q. revoiutions p*r nUnute FIG. 3-VELOCITY AT VARIOUS BLADE SECTIONS -AND RESULTANT AIR FORCE PER SQUARE FQOT », so BLADS . ccrtos* NunozB e'-Jo' 7--30- " 7--3S1 ZI3 264 IO4.I 691 10.35 13 JSO 70. SO S4.60 7T3KOUK. in IO-32 3O.30 SZ./O 63OO 663 668 C93TA/VC f ALO VG Bi. *BC »• #* to fx> TO 60 SO 40 *J 20 10 HurfBe K. 1 3 5 ATTACH. -S--4O- -z--s -O'-W /'-Iff O'~4O' 104 IS6 215 277 34Z i.tFT 255 5031 66.Z 125 3 ****** we 4.33 3.73 846 IS9Z PtXJHOS 1087 35.3 S7.6 7SS TO mourn fOUMO BMMT O£>O IZ3Z 3776 42.OO 96ZO AT 3CCT/O/Y -oa 74.3Z 70.00 , - • i I , ' 2 3 4 T E ^ [ VMU3. . // Afce err*. LOtfC Z seen t»cr / if-fy 1 ! cr * / -• N •..j^i... ' \ \ \ 1 1—A ! [ 'l € For low speed. 40 miles per hour and 1JJM) revolutions per minute.' For high speed: SO miles per hour and 1400 revolutions per minutej FIG. 4.—THRUST, TORQUE AND POWER EFFICIENCY '" ! 1*3 low speed: 40 miles per hour and 1100 revolutions per minute. I 2. 3 For high speed: 80 miles per hour and 1400 revolutions per- minute.] FIG. 5.—STRESSES -AND FACTOR OF SAFETY
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