Air Force F-10 demonstration team for the intensive formation interval reduced by a 5 m to 1 m
Data Figure: China Air Force J-10 six-plane formation to perform.
9 月 1st Changchun Aviation Festival, October 29 and November 9 of the Thanksgiving trip air show, China’s new J-10 aircraft three generations of machines to form an air guard of honor, with a wonderful time and time again aerial dance conquered people.
the United States has said the United States, show off a flashy move. Pursuit of the air show flying display viewing area, showing a single difficult move and coordination of multi-machine, which they have the technical details of how to follow the flight of aesthetics? Look at the depth of the Air Force flight test experts Xu Yongling interpretation.
Air Force flight test experts show the depth of interpretation of the technical details and flight aesthetic –
low: precise control of the test
low altitude of the most powerful effects, but the maximum pressure on the pilots. Low-altitude flight is not only a high degree of difficulty to master, but also in trajectory control. From a purely technical point of view, just flying too low, not difficult, a mature and trained pilots simply break the psychological barrier, a high degree of flying half a meter had not much difficulty. The problem is you can not just do straight and level flight at low altitude, but also do hovering or vertical maneuvers. Especially the latter, you need to pilot the aircraft angle of attack of the slope and precise control.
the height of the vertical motor control, can not be adjusted as the level of flight, and the action required in the design and implementation of process control calculations predict. Vertical mobility is to make the aircraft more difficult to obtain the vertical mobility radius as small as possible, you need to enter the initial state, the engine thrust, speed and angle of attack for precise control of overload.
sometimes in order to obtain a more thrilling performance results, vertical mobility in the state of the aircraft but also for changes, but changes will bring more perpendicular to the radius variable motor control can lead to inappropriate risk occurred. 2002 plane crash that the pilot Ukraine Liwo promise to do “over the shoulder roll,” because the control is too large angle of attack roll, roll the aircraft during the “circle”, resulting in a change when the roll angle of depression is too large, coupled with the vertex vertical maneuver, the pilot received inappropriately small throttle, the aircraft out of a dive in the lack of motivation, and ultimately led to 80 deaths in plane crash tragedy.
fierce: the radius of mobility is the key
seen the air show video of friends will find a high level of performance feel like a pilot in the cockpit in the “blacksmith “great range of motion, it is also very firm and decisive, but the aircraft track changes in the external, but did not see the step-uncoordinated movement. This is precisely the mystery of flight demonstrations where the violent action.
intense performance in flight movements and range of motion on a sudden transformation. Before the advent of the fourth generation machine, the effect of violent action to achieve nothing less than to be two aspects, one roll severe, the second is the appropriate angle of attack, as soon as the flight to the former state, which is to get as much as possible a big lift, curve lift movement is centripetal force, centripetal force greater the less the radius of the curve movement, from the perspective of viewing the action more intense.
mighty quick in order to show the performance of the aircraft, to show the effect of strenuous exercise, pilots from the speed of motor, motor the size of the radius of the two angles show the performance of the aircraft. Demonstrate aircraft maneuvering radius is the best means to obtain performance results, because the audience does not go to the specific computation time, the smaller the radius of mobility not only very quick to give the audience the effect of aircraft, but also makes them very mobile changes fast feeling.
to get a small radius of the key motor speed. Experienced pilots maneuver the aircraft in the display performance, always use a smaller motor speed, of course, in order to obtain better control results, the rate is usually not less than 400, unless the aircraft’s high angle of attack to demonstrate performance.
change: allows you to guess the roll
change the traditional aircraft, the so-called change of slope in fact, it sounds too absolute However, the changing maneuvers secret lies in the slope changes. Because no matter how thrilling the circling maneuver, if you always maintain a state, the novelty of the audience will soon be breaking the rigid motion.
performing flying changes so much, but we often see in the actual performances, some pilot actions are constantly changing, but always gives a sense of deja meet the routine, the reason is that not flexible use of roll maneuver. Some pilots do not roll 90 degrees is 180 degrees, or is the roll 360 degrees.
actually roll in flight performance can play a very big role, the reason but also from the “show” perspective, modern aircraft wingspan is usually higher than conventional delta wing aircraft width, therefore, roll generated by the wing of the “fan” who is very impressed.
Russians seem well versed in this area show the road, they are always in trouble in the use of low-altitude maneuver roll, so you still can not guess what his next step, a one in the wings sports fan, your heart also followed with a V; the other hand, the French pilot of the “gust” performance, always use rigid roll motor, 90 degrees, 90 degrees in another direction, or, at most 180 degrees inverted, In this regard Russian art perceptive obviously much higher.
risk: Magic the same action choreography
flight demonstration of the risk it is not only playing the border, it is a low-level, or the so-called advantageous ” show “effect, not the physical strength to fight their tips, playing bold, but rather the arrangement. Risk is actually to give the audience feel “will happen” but “no” kind of exciting, so important is not blind, low, fast, fierce, but to let the audience feel what going to happen, such as down mobility seems to touch the ground, and low-speed flight seemed to stall, and two-plane flight seems to be multi-machine collision, and these actions are actually arranged in advance.
It’s like magic, you know what a particular action will produce results, such as dual-scissors maneuver, dual low-altitude flights, dual-mirror pyramid, the mystery of these actions is to choose its own good frame of reference, such as scissors maneuver must fly to the audience, the audience head-on view, while two-plane intersection of the moment does not depend on one another hide, but advance good control from front to back, which from the perspective of the face is difficult to find, and if the aircraft to the same collision.
the same token, low-altitude flights, the flight crew selected a line of a runway, even though each interval is small, but it’s the same interval and formation flying is unchanged, and therefore safe, but From the positive side of the viewing angle, as if “pass.” Like magic, like the change will never end, breathtaking action choreography is endless, which requires the performers to play their imagination and artistic inspiration, of course, can not break through all the changes in the basic principles of flying.
Qi: queue interval as a sense of
single performance “show” is the pilot of the technology, fleet performance “show” is the formation of homogeneous . The effect of Qi to reach the queue to get a sense as the interval, which gives the performers a very high flight requirements. J-10 show the biggest bright spot is that the young pilots who broke the shackles of tradition, a change in the original intensive formation interval of 5 m limit, the courage to challenge their foreign counterparts, the distance control in the 1 meter. Of course, the actual space flight, if the gap is only 1 meter each, the probability of an accident will be very high, therefore, in order to “show” effect to do the appropriate “technical process”, the key here is that the height difference.
J-10 performance in the latest schedule, whether it is 6 or 4 machines sword machine echelon teams, if several aircraft are fit in together, which in addition to the technical process, more or usually rely on pilot training, the accumulation of sweat. Kind of mutual trust, the kind of seamless feel, the kind of captivating rhythm, we need to get the training usually tempered in this, as a young fellow I would like to pay tribute to his comrades, and I cheer for their superb , but also for their dedication to warm applause.
mentioned above, of course, only some basic knowledge of flight performance, as the performer is actually more to master them. Let us keep a sense of the mysterious flying it. Because the viewer is concerned, we want to admire and enjoy, enjoy superb pilot skills, enjoy the show off the air and beauty of dance! (Xu Yongling)