The dangerous situations encountered by parachutes are roughly the folds of umbrellas during turbulence, when the water of lakes, rivers, and seas must fall into water, and when cumulus clouds are attracted by strong updrafts.
When the center air outlet flaps, the umbrella will drop rapidly immediately, and the umbrella will swing back and forth quite strongly. At this time, the left and right control ropes should be pulled down at the same time to prevent the umbrella from leaning forward , and then the center air outlet flaps will Open again. And the magnitude of the pull of the control rope is related to the degree of the flap of the tuyere, that is, the larger the flap is, the larger the pull of the control rope is, and vice versa.
When the control rope is pulled down and the tuyere flaps are restored, it may also cause a stall situation. The left and right umbrella clothing fold the wings first to pull down the control rope on the side without flaps to keep the umbrella gliding forward and prevent the spiral rotation. After reaching the safety zone, pull the control rope on the side of the flaps up and down sharply and quickly. If one time is invalid, pull the second time and the third time. If it is not possible to return to its original state, you should immediately consider using a para-umbrella.
In fact, when the umbrella is rotating, the descending speed will immediately increase. At this time, the other control rope should be pulled down a little to prevent pressure loss and fold the wings. If the wings are pulled, the control rope is quickly pulled up and down 2-3 times.
Before falling into the water, detach the cuff from the body first, and the lock of the hook must be opened, especially when falling into the river, the umbrella clothing will be washed away by water, and the possibility of drowning is quite high, so special attention must be paid. It is forbidden to approach where there are high-voltage lines, but in case of approaching, you should definitely avoid touching two wires at the same time, keep your body as vertical as possible, hands and feet straight , and there will be a magnetic field near the high-voltage lines, so you should also avoid. If the location of the high-pressure line is downwind and the altitude is sufficient, use the downwind to cross the high-pressure line before landing , because landing downwind is sometimes safer.
If flying by the sea or lake, it is best to wear a life jacket in case of falling into the water. In addition, if the umbrella cover is over the head after falling into the water, it will cause the danger of being unable to breathe, so be sure to brake before falling into the water. Landed behind the pilot.
I usually avoid cumulonimbus clouds when I see them from afar. However, its movement speed is too fast, and sometimes the pilot will be sucked up without learning. When such an abnormal rising condition is discovered, an effort should be made to break away immediately .
If the ascending airflow is very strong, the 360-degree rotation usually used to reduce the height usually increases the speed of ascent. Therefore, at this time, the ground height should be measured. Use Full Stall to wind the control rope around your hand for 2 or 3 turns, then pull it to the full brake, and stick your hands on the outside of your hips to bend the umbrella into a horseshoe. To achieve the effect of rapid decline.
However, due to the full stall, the umbrella is greatly damaged when it is released, and the umbrella is stopped momentarily when the rear brake is pulled down. The pilot will sway forward due to inertia. Unless he is a fairly skilled operator, he will instead It is easy to be in danger due to this sudden situation. So now more and more people use B Stall instead of full stall to escape the chaos.
Stall B refers to the method of pulling the control strap of group B (the umbrella rope of group 2) and lowering the umbrella vertically while stalling. The method is to pull down the control band of group B, it is best to pull it to the shoulders first, observe the condition of the umbrella, then decide whether to pull it to the chest, and release it slowly after leaving the cloud area (do not put it too fast, otherwise the umbrella will fall down) Straight forward) .
The parachute is the last chance for the pilot to save himself in case of circumstances. Generally, when the umbrella is folded, it can be recovered in a timely manner. When it is restored to its original state, its height will be relatively lost. If the recovery operation is too late, and if the sling and the umbrella cannot be entangled, it is likely to It was close to the ground before recovery. In addition, the material of the main umbrella coat is degraded by ultraviolet radiation, and the remaining strength of the material is not enough. Once it encounters an unexpected situation, its strength is likely to be unbearable and damaged. At these times, only the parasol can save lives.
The pilot parachute is thrown from the thrown to the surface of the parachute and loses at least 50 meters in height. This must be considered, so if the pilot parachute must be thrown below a drop of 50 meters, the parachute has no purpose. On the contrary, it may be entangled with the main umbrella due to turbulence, which must be paid great attention.
The auxiliary umbrella can be roughly divided into two forms: one is discarded, the other is Cut Away. The discarded outsourcing has two types of barrels and squares. When using, hold the belt with one hand and then force it to When thrown in the rear, the umbrella rope will be pulled out in sequence, and the inner umbrella bag will fall off. The harder you throw it away, the sooner you open the umbrella. Then the umbrella clothing starts to eat the wind, and then rises from the back to the top. When the auxiliary umbrella is raised, the main umbrella should be retracted and held as far as possible to prevent it from being entangled with the auxiliary umbrella. At the same time, grasp the combination of the auxiliary umbrella with the other hands band.
Detach The detachable auxiliary umbrella needs to be pulled off the hook. The main umbrella detachment and the auxiliary umbrella opening are completed at the same time. Its shape is like a small high-altitude umbrella, and it can also control the direction.
When using the disposable umbrella, you must be careful not to throw it directly below, because if it is downwind, the secondary umbrella may rise from the front, so it will be enveloped by the main umbrella and will not work. In addition, it is best to open and check the umbrella again at regular intervals, because the umbrella must be opened 100% during use, and there can be no mistakes. Therefore, it is necessary to ensure that it can be used once it is used. Save lives without mistakes. There are two sizes of the umbrella rope of the auxiliary umbrella. One is longer than the main umbrella and the other is lower than the main umbrella. The purpose is to prevent entanglement with the main umbrella. The sooner the auxiliary umbrella is opened, the longer the strain time, but it will drift with the wind. The longer the time is, and because the disposable para-umbrella cannot be operated, it should be avoided in complex terrain areas and thrown after passing. If the main umbrell a is stepped on under the strong turbulence during the flight, and the whole person is surrounded by the main umbrella like a sandwich, no matter what type of auxiliary umbrella cannot be opened, it is necessary to avoid the main umbrella. Wrap up. When the para-umbrella is fully open, pay attention to whether you are in a supine position. At this time, try to change the posture of the head and foot to prevent landing on the back.
When the parachute exercises under the normal condition of the main parachute, it only speeds up the fall, but when it is actually used, it is in a critical situation. Therefore, you must keep your head calm and make a decision immediately. Once you decide to use the parachute, you must immediately Do not hesitate to pull it out, because a momentary mistake may cause danger to life.
If the emergency situation occurs when the height is less than 30 meters, it is definitely too late to throw the auxiliary umbrella. At this time, don t try to rule out the flaps. You should immediately stand upright, find a good place, and prepare to land and roll over again. At this time, the psychological preparation is that you should not hurt your spine and head even if you break your leg. So in any case, you need to use your feet to land first, and then roll over to cushion.