Page:Dictionary of aviation.djvu/220

 196 DICTIONARY OF AVIATION

shaft $a:ft n.

1. the main stem or steck of a bird's fether including both the calamus and rachis; the scape.

2. an axle, commonly an elongated cylinder or bar in shape, as that connecting the motor of an airship with the propeller; also, any bar revolvd by power and communi- cating its motion to various working^parts or separate ma- chines, as by drums and belts, or by cogwheels.

sharpshooter '$a:zp,$uu-t9z n. one skild in shooting with firearms, especially with the rifle; a skirmisher.

shear $i:z n. a deflection or deviation from the normal path; movement to one side.

shelter-belt '$elt9z,belt n. a forest maintaind as -a protec- tion against wind or snow; a shelter-wood; a wmd-mantle. compare wind-break.

ship $ip n. an aerial vessel; an airship; a dirigible balloon.

shock-absorber '$k-3b,so:z-b9z n. a device for absorbing or dedening the shock or concussion experienced by an air- ship when it lands or comes into contact with any obsta- cle ; a buffer.

shooting-star 'Suu-tir^staiz n. same meaning as falling* star.

short -winged '$o:zt,wir)d adj. [also spelt shortewingd] hav- ing wings that are short; furnisht with short wings.

shoulder '$ool-d9z n. the part of an aerofoil or streamline body just behind the hed; the hinder portion of the en- trance of a streamline body.

shoulder-feather '$ool-d9z,fed9z n. same meaning as scapular.

shoulder-fork '$ool-d9z,fo:zk n. the fork or yoke-like part of the movable seat-back, as of a Curtiss aeroplane, em- bracing the operator's shoulders ; the shoulder^yoke : as,
 * shoulder?fork control.

shoulder-yoke '$ool-d9z,jook n. the yoke or ferk-like part of the movable seateback, as of a Curtiss aeroplane, em- bracing the operator's shoulders; the shoulder-fork.

shoulder-link '$ool-d9z,hrjk n. the shoulder-jomt of a bird, in the region of luhich the tertiary fethers are attacht.

sho we r- cloud '$au-9z,kz,aod n. a cumulo-nimbus cloud from whose base a shower of rain, hail, or sleet generally falls; a thundercloud

side-plane 'said,pi.een n. a plane placed at either side, or near the lateral extremities, of a flying-machine, as for stability.

side-pocket 'said,pekit n. a wind-pocket or windbag en the side of a Japanese kite, for aiding stability.

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