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CRUISE RPM [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-07-28

English

Subject field(s)
  • Engines (Motor Vehicles)
CONT

How can we make the engine more efficient without giving up a single horsepower of performance when we need it? These days, the answer is engine downspeeding. This is not a reduction in the size of the engine; instead, it's a reduction in the rpm [revolutions per minute] of the engine, especially at highway cruising speeds between 61 and 68 miles per hour. Downspeeding allows the engine to cruise in its sweet spot, reducing friction and increasing fuel efficiency.

French

Domaine(s)
  • Moteur (Véhicules automobiles)
DEF

Décalage des plages de fonctionnement d’un moteur vers des régimes inférieurs, visant à diminuer ses frottements internes et, partant, la consommation.

OBS

abaissement du régime moteur; abaissement du régime : termes et définition publiés au Journal officiel de la République française le 28 juillet 2015.

Spanish

Save record 1

Record 2 1999-02-04

English

Subject field(s)
  • Aircraft Propulsion Systems
CONT

A two-position propeller... does permit a setting of blade angle for best takeoff and climb(low-pitch, high rpm) and for best cruise(high-pitch, low rpm).

Key term(s)
  • two-position controllable propeller
  • two position controllable propeller

French

Domaine(s)
  • Propulsion des aéronefs
CONT

La recherche d'une hélice susceptible d'un rendement satisfaisant, dans les conditions d'utilisation extrêmes que constituent le régime lent succédant au décollage et le régime rapide correspondant au vol à vitesse maximale, a conduit à réaliser en premier lieu une hélice à deux positions. Au décollage, on utilise une position de pales correspondant à un faible angle de calage, donc à un petit pas. En vol, on utilise la seconde position correspondant à un angle de calage élevé, donc à un grand pas.

Spanish

Save record 2

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