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MAIN ROTOR BLADE [5 records]

Record 1 2007-04-12

English

Subject field(s)
  • Helicopters (Military)
  • Aeronautical Engineering and Maintenance
  • Ground Equipment (Airports)
CONT

Each time a main rotor blade de-icing harness connector is disconnected and reconnected afterwards on the slip-ring assembly side, then fit the harness connector with a heat-shrinkable sleeve, in accordance with the Eurocopter EC 225 LP ASB No. 05A006.

Key term(s)
  • deicing harness

French

Domaine(s)
  • Hélicoptères (Militaire)
  • Aérotechnique et maintenance
  • Matériel de piste (Aéroports)
CONT

Goodrich Corporation a annoncé aujourd'hui avoir été sélectionné par AgustaWestland, une société de Finmeccanica, pour fournir le système de protection contre le givrage pour l'hélicoptère bimoteur AW139. Grâce au tablier de dégivrage électrothermique DuraTherm(TM) de Goodrich, ce système protège les pales principales et celles de la queue contre le givrage dans des conditions d'opération extrêmes.

Spanish

Save record 1

Record 2 2004-05-21

English

Subject field(s)
  • Helicopters (Military)
  • Flight Instruments and Equipment (Aeroindustry)
OBS

blade trim tab: term officialized by the Aeronautical Terminology Standardization Committee (ATSC) - Helicopters.

OBS

Main rotor blade trim tab.

French

Domaine(s)
  • Hélicoptères (Militaire)
  • Instruments et équipement de bord (Constructions aéronautiques)
OBS

tab compensateur de pale : terme uniformisé par le Comité d'uniformisation aéronautique (CUTA) - Hélicoptères.

Spanish

Save record 2

Record 3 2004-04-08

English

Subject field(s)
  • Aeronautical Engineering and Maintenance
  • Helicopters (Military)
CONT

Trim tab bender shall installed so angle indicator is located on bottom side of trim tab.

OBS

trim tab :Main rotor blades are of all metal construction with an aluminum alloy honeycomb core, aluminum skins and nose block. All structural components are joined by metal to metal bonding. The blades are set in hub grips at a precone angle of 2½ [degree] and are secured by a single retention bolt in each grip. A trim tab is located on the blade trailing edge for tracking adjustments.

French

Domaine(s)
  • Aérotechnique et maintenance
  • Hélicoptères (Militaire)

Spanish

Save record 3

Record 4 1988-03-24

English

Subject field(s)
  • Helicopters (Military)
  • Aeroindustry
CONT

The first helicopter simulators used a rotor map technique which calculated the total thrust vector of the main rotor on the basis of a series of stored steady states... The simulator was therefore quite realistic in steady flight states, but... [not] in transient condition... in order to achieve realism, the main rotor had to be simulated blade by blade throughout every rotation(blade element modelling), so that factors like interference and cross-coupling could be taken into account.

French

Domaine(s)
  • Hélicoptères (Militaire)
  • Constructions aéronautiques

Spanish

Save record 4

Record 5 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 5

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