Page:Dictionary of aviation.djvu/50

 26 DICTIONARY OF AVIATION

Lander's anemometer, an anemometer or anemograf in which a rubber bellows lifts a float suspended in glycerin.

Lind's anemometer, an anemometer consisting of an in- verted glass sifon partly fild with water, mounted en a wethervane.

pendulum anemometer, an anemometer, first described in 1666, in which a metal pendulum is hung broadside to the wind, the velocity of the wind being mesured by the de- flection of the pendulum from the vertical; Hooke's ane- mometer.

reflecting anemometer, same as Aime's nephoscope. see under nephoscope.

Robinson's anemometer, an anemometer in which four hollow hemisfenc cups revolv on a vertical axis.

aiiemoinetric g^ema'metjik, ,seni-mo'metik adj. of or per- taining to anememetry.

aiiemometrical 9,nem9'metr i i-k9}, ,3eni-mo'met3;i-k9} adj. same meaning as anemometric.

auemometrograph 9,nem9'met9-gza:f, ^ni-mo'metr^-gzaif n. [also spelt anemometrograf] an anemograf.

anemometry ^ni'memi-tji n. the process or art of mesur- ing the force and velocity of the wind.

anemonal a'nema-nl adj. of or pertaining to the wind.

aneiiiophobia 9,nem9'foo-bi-9, ,aen9m9'foo-bi-9 n. [also spelt anemofobia] a morbid fear of high winds.

anemoscope 9'nem9,skop n. an instrument for showing the direction of the wind; a wind^vane.

aneroid '3en9,zeid adj. without wetness; destitute of liquid: applied to a kind of barometer which mesures the pressure of the atmosfere net by its action on a column of mercury as does the ordinary barometer, but by its action en the elastic lid of a box containing a vacuum.

aneroid 'aen9,zeid n. an aneroid barometer.

angle 'aerjggi n. the space included between meeting lines or planes; also, the degree of inclination of two lines to each other, as of the line of flight to a horizontal base-line.

angle of ascent, the positiv angle of inclination to the horizontal at which an aeroplane flying^machine makes an ascent into the air.

angle of attack, same meaning as angle of incidence, angle of bladettravel, the angle or degree of inclination at which a propeller^blade travels thru, or impinges upon the air; the angle of travel of a propeller^blade.

angle of entry, the angle at which the front edge of an aeroplane or aerocurv enters or goes into the air; the angle fermd by the line of motion of an aerofoil with a line in the

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