TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

REFLECTING BLADE [2 records]

Record 1 2002-06-21

English

Subject field(s)
  • Hunting and Sport Fishing
DEF

A bright metal vane which spins as the line is drawn through the water, used as a lure.

OBS

A spinner consists of an oval or car-drop-shaped blade that whirls around a shaft, reflecting light in a series of intermittent flashes as it pulls through the water.

French

Domaine(s)
  • Chasse et pêche sportive
DEF

Leurre métallique composé d'une palette en forme de cuiller, montée de façon à pouvoir tourner autour d'un axe.

CONT

Les cuillères tournantes sont plus efficaces à profondeurs faible ou moyenne, car elles calent lentement.

Spanish

Save record 1

Record 2 1985-01-02

English

Subject field(s)
  • Aeroindustry
  • Radar, Radio Guidance and Goniometry
CONT

Detection relies entirely on echoes returned by the main rotor blades which do yield a significant Doppler effect. Experience has shown that rotor blades, whether metal or plastic, behave like mirrors in terms of reflecting electromagnetic radiation. In other words, a blade will only give a usable return to the transmitter location if it is perpendicular to line connecting blade and transmitter. At the receiver, a series of return pulses can be detected, each corresponding to the passage of a blade. By analogy with the illumination of a rotating mirror, this pulsed return pattern is known as "blade flash".

French

Domaine(s)
  • Constructions aéronautiques
  • Radar, radioguidage et radiogoniométrie
CONT

La détection repose entièrement sur les échos renvoyés par les pales du rotor principal qui, eux, présentent un effet Doppler important. L'expérience a montré que les pales, métalliques ou plastiques, se comportent vis-à-vis du rayonnement électromagnétique comme des miroirs. En d'autres termes, elles ne réfléchissent l'émission radar que si elles sont perpendiculaires à celle-ci. A la réception, on enregistre donc une série de retours de caractères impulsionnels, chacun correspondant au passage d'une pale. Par analogie avec l'illumination d'un miroir tournant, on appelle "éclairs de pale" ces retours impulsionnels.

Spanish

Save record 2

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