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Tapered umbrella

Tapered umbrella

Introduction to conical umbrella: The conical belt umbrella coat is composed of concentric belts, and there is a certain gap between the belts. The umbrella garment is composed of horizontal strips parallel to the bottom edge and vertical strips perpendicular to the bottom edge. The horizontal strips generate resistance, and the vertical strips mainly limit the gap distance between the horizontal strips in addition to the resistance. After the umbrella garment is sewn, the structural shape is conical. Features: The conical belt umbrella has the advantages of good stability and small dynamic load. Left use: tapered belt parachutes are commonly used in aircraft resistance parachutes, stabilization parachutes and high-speed and heavy-load parachutes, and are also used in Ma<1.5 low supersonic parachutes.

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Rotary Umbrella

Rotary Umbrella

Rotating umbrella barrel medium: the shape of the rotating umbrella coat, the distribution of the umbrella rope on the umbrella coat or the difference between the length of the umbrella rope have central symmetry. An exhaust port that is consistent in the direction of rotation is created on the full canopy, and when descending from the air, the airflow into the canopy is discharged from the exhaust port. The reaction moment generated by the exhaust gases causes the canopy to rotate about the central axis. Features: Rotating umbrella has high stability, high resistance coefficient and other advantages. But with the general parachute phase it can not be manipulated, the process is more complex, processing requirements are higher. Application: The rotating umbrella is often used as a stabilizing umbrella for ejection seats, bomb parachutes, air-dropped torpedoes, and air-dropped heavy objects.

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Flat round umbrella

Flat round umbrella

Plane circular umbrella tube medium: the plane circular umbrella is in the shape of a circular plate in the unfolded state and can coincide with each point on the plane. Close to semi-ellipsoid after filling in the air. In order to increase the stability of the umbrella coat, reduce the dynamic load of the umbrella opening and improve the manufacturability, the umbrella top is generally provided with an umbrella top hole. Features: Plane circular parachute has the advantages of reliable work, fast opening, uniform force of umbrella coat, convenient packaging, etc., so most traditional parachutes use circular as the basic structure. However, the circular umbrella also has its shortcomings, it is not stable, easy to swing. Left: Flat circular umbrellas are commonly used for human umbrellas and throwing umbrellas.

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Square Umbrella

Square Umbrella

Square Umbrella Profile: Square Umbrella Coat is a plane quadrangle, with parallel and vertical reinforcing bands sewn on the umbrella coat to strengthen the strength of the umbrella coat and limit the range of possible tearing of the fabric. Features: The square umbrella has the advantages of simple structure, large resistance coefficient, high material utilization rate, and small dynamic load. However, the distance from the top of the umbrella to the bottom of the square umbrella is not equal. In the process of straightening and inflating, the umbrella coat and the umbrella rope are unevenly stressed, so the umbrella is slowly opened. In the process of opening the umbrella coat, the dislocation of each part of the umbrella coat is serious, which is easy to cause burns from the umbrella coat and the umbrella rope, and the uneven stress is easy to cause local damage.

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Jiayuan belt

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