The first parachute jump
I went to Taupo, New Zealand, and this was my first parachute jump. Skydiving was never what I desperately wanted to do, or even miss such a fleeting thought, but…

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Skydiving in South Africa: A Stunning Summer
If you are a parachuting enthusiast, you already know everything about adrenaline addiction and attractive gravity, so don't miss the chance of an exciting jump if you are relaxing (or…

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Varieties of parachuting
Parachuting requires the athlete's skills to perform a free fall with various acrobatic elements, a controlled descent and an exact smooth landing. The times when the equipment of a paratrooper…

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Beginner Tips – Low U-Turn (part 3)

Acceleration using the front free ends has a number of important advantages compared to turning the brakes. Acceleration with the help of the front free ends accelerates the dome, and a turn with brakes, on the contrary, slows it down. This difference is especially apparent at the end of a reversal. After a turn on the front, the dome slows down to its normal speed and tends to return to a neutral position above the pilot. After turning by the brakes, the dome needs to restore speed to normal, so the pilot returns to the neutral position with a significant delay. A turn of the brakes can create a greater pendulum effect, since in it the dome slows down much faster than the pilot under it. On the contrary, when turning with the help of the front free ends, the dome accelerates only slightly faster than the pilot. When turning with brakes, it takes time for the pilot to “swing” back to the neutral position, and the dome to accelerate again to a speed that provides controllability and maximum lift. U-turn at the front free end can be stopped at any time without affecting handling.

U-turn by brakes can also be dangerous for loaded domes (specific load 1.4 and higher, depending on type). During a sharp turn, the pilot can swing so hard that when he returns to the dome, the overload may be too high for the dome. In this case, the wing is in a situation of flow stall and becomes completely uncontrollable. In this case, brake braking may not help, moreover, it can lead to an even greater loss of lift. All that helps the implementation of the “pillow” in a situation when you are parallel to the surface – will move the point of your collision with the ground.

Finally, when jumping with most types of canopies, the pilot’s turn by the brakes takes the farther out from under the canopy, compared to a turn using the front free ends. The dome in the frontal projection is concave in relation to the pilot and the ground, and a steep turning angle in such a situation means a much faster loss of height. This is due to the fact that the vertical component of the lifting force of such wings in the rotation is rapidly reduced.

All of the above, however, should not be taken as an unambiguous recommendation in favor of turns with the help of the front free ends. There is a phenomenon that can lead to a complete folding of the dome when performing a high-speed turn – and especially a turn using the front free ends on some types of domes. This happens when the relative flow interacting with the wing dramatically changes its characteristics – angle of attack, pitch angle or something else – for example, as a result of another dome entering the satellite stream. The relative flow in this case does not blow on the leading edge of the wing, but on its plane. In the case of a soft dome, this can force air out of the nozzles and cause the dome to fold. Most exposed to this risk are small loaded domes adjusted to a small pitch angle, for which the projection point of the lift is shifted back.

The projection point of the lift force is the point on the upper plane of the wing through which the imaginary lift force vector passes. The dome, at which this point is shifted forward, is very resistant to turbulence, but it will not be as good to plan as a dome with a rear-mounted lift projection point. Domes with a rearward-projected lift projection point develop good speed and have good aerodynamic quality, but are more prone to folding.

Research Institute of Parachuting "Rostec" tested the products in its CEO
Rostec creates a parachute for the "Warrior". The new parachute system takes into account all the features of promising combat equipment The Research Institute of Parachute Engineering tested the new…

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CSKA parachutists win gold at the World Cup
At the 35th World Parachuting Championships, women's group competitions for precision landing were held. At the World Parachuting Championships, the first set of awards was played - in women's group…

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The new parachute system for the Airborne Forces successfully passed the first stage of state tests
Discharges of the new parachute system for armored vehicles (BTR) and airborne combat vehicles (BMD) “Bahcha-U-PDS” at the first stage of state testing were successful. This was reported in the…

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U-Turn Physics under the Dome (part 2)
You should begin training in high-speed landing by approaching in a straight line with acceleration by two front free ends, which must be pulled up by 10-12 cm.This approach will…

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