Célé

The Célé is a 104 km long river in the Cantal and Lot départements, south-western France, a direct tributary of the Lot River. Its source is near Calvinet in the Cantal. It flows generally west through the following départements and towns:

The Célé flows into the Lot at Bouziès.

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Control line

Control line (also called U-Control ) is a simple and light way of controlling a flying model aircraft. The aircraft is connected to the operator by a pair of lines, attached to a handle, that work the elevator of the model. This allows the model to be controlled in the pitch axis. It is constrained to fly on the surface of a hemisphere by the control lines. There is also a control system that uses only a single solid wire that is twisted around its own axis, that spins a spiral inside the airplane to move the elevator. While it can be used with some success on any type of model, it is best for speed models where the reduced aerodynamic drag of the single line is a significant advantage. The control provided is not as precise as the two-line control system. The control lines are usually either stranded stainless steel cable or solid metal wires of anywhere from 0.008 in (0.20 mm) to 0.021 in (0.53 mm). Sewing thread or fishing line may be used instead of wires to control very small models, but its air resistance is greater. A third line is sometimes used to control the engine throttle, and more lines may be added to control other functions. Electrical signals sent over the wires are sometimes used in scale models to control functions such as retracting undercarriage and flaps. Almost all control-line models are powered with conventional model aircraft engines of various types. But it is possible to fly control-line models that do not use on-board propulsion, in a mode called "whip-powered", where the pilot "leading" the model with his arm and wind supply the necessary energy to keep the airplane aloft, in a fashion similar to kite-flying.

CEL

CEL may stand for:

Cel may refer to:

See also

BC

BC may refer to:

Geography

Schools

Businesses and organizations

Bîc River

Bâc (also spelled Bîc) is a river in Moldova, a right tributary of Dniester.

The upper flow of Bâc cuts a deep canyon in Codri Hills. The capital of Moldova, Chișinău, is situated near Bâc. A dam near Chișinău holds the Chișinău Sea reservoir, which has an area of about 10 km². During the summer season, Bâc often dries out and turns into a chain of lakes. The river is heavily polluted, so swimming in it is not advisable.

Coordinates: 46°54′42″N 29°27′59″E / 46.91167°N 29.46639°E / 46.91167; 29.46639

Bù Đốp District

Bù Đốp is a rural district in Bình Phước Province of the south-east region of Vietnam, approximately 90 km north of Ho Chi Minh City, near the border with Cambodia. As of 2003 the district had a population of 51,597. The district covers an area of 378 km². The district capital lies at Tân Tiến.

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