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UNPOWERED AIRCRAFT [3 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2006-05-19

English

Subject field(s)
  • Skydiving, Paragliding and Hang Gliding
DEF

The comparative distance a canopy flies forward while descending.

CONT

Glide ratio is directly related to glide path because it is a measure of how far forward we travel for every unit of vertical descent. Typical glide ratios for a paraglider are between 3 to 1 and 6 to 1. This means we travel between three feet forward for every foot of descent and six feet forward for every foot of descent depending on the design.

OBS

The terms "glide ratio" and "lift-to-drag ratio" are interchangeable. … "Glide ratio" is the preferred term for unpowered aircraft, and "lift-to-drag ratio" the preferred term for aerodynamics literature and powered flight.

OBS

["Glide ratio" is] sometimes called "glide angle". A canopy with a 3:1 glide ratio flies three feet forward for every foot of vertical descent.

OBS

… "glide ratio" is the same as "lift over drag," or "L/D."

Key term(s)
  • lift to drag ratio

French

Domaine(s)
  • Parachutisme, parapente et deltaplane
CONT

La finesse d'un aérodyne à voilure fixe est le rapport, à une vitesse donnée, entre sa force portante (portance) et sa traînée aérodynamique. Elle est égale au rapport entre la distance horizontale parcourue et la hauteur initiale, à vitesse constante et sans force de propulsion, en air calme, ou encore au rapport entre la vitesse horizontale et le taux de chute.

CONT

Une voile ayant 5 de finesse avancera de 5000 m de distance pour 1000 m de descente.

Spanish

Save record 1

Record 2 2003-03-12

English

Subject field(s)
  • Model and Figure Making (Hobbies)
DEF

... a scale model of a full size aircraft or a design specifically for the hobby [of aeromodelling].

CONT

Model aircraft can be anything from unpowered and uncontrolled, free-flight gliders, to multi engine radio controlled aircraft with wingspans of six or more feet.

OBS

Aeromodels ... are flown with controls from [the] ground.

French

Domaine(s)
  • Construction de maquettes (Passe-temps)
OBS

[...] il peut s'agir de n'importe quels objets volants radiocommandés ou non, motorisé ou non, sans pilotes, ni personnes à bord.

Spanish

Save record 2

Record 3 1992-12-04

English

Subject field(s)
  • Types of Aircraft
OBS

unpowered aircraft : term standardized by ISO.

French

Domaine(s)
  • Types d'aéronefs
OBS

aéronef sans moteur : terme normalisé par l'ISO.

Spanish

Save record 3

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