Chapter 717 F-15S/MTD Verification Machine
At three o'clock in the afternoon, the sky was clear, and Zhukovsky was full of voices. Pen % fun % Pavilion www.biquge.info
Sitting in the tent in the shade, looking at the runway in the distance, raising the telescope in your hand, the highlight of the air show, the air show finally began.
When a fighter plane painted red and white with NASA painted on the tail slid onto the runway, everyone got up from their seats, what was that? Is it the American show machine this time?
In appearance, the plane is very similar to the F-15, with tall twin tails, rectangular air intakes on both sides, and in the bubble cockpit, a pilot is waving to this side, but, in front of the main wing, what is that thing? How do you get an extra pair of little wings? That thing, a little upturned, seems to be able to move? What is this? Canard wings?
Hmph, that's it, and the technical verification machine has been moved! Standing on the conning tower and looking at the fighters on the runway below, Andrei couldn't help but sneer in his heart, the Americans, don't they all claim that the best canard wings are on enemy planes? Even the three-wing layout, which Andrey repulsed, the Americans tried anyway!
Of course, this is not the final finalized model for equipping troops, this thing is just a verification machine!
The F-15S/MTD is an advanced technology demonstration aircraft developed by McDonnell-Douglas for the Wright Institute of Aviation Research for the United States Air Force in 1984 for the F-15 short take-off and landing and improved maneuverability. The demonstrator is actually to verify advanced aviation technology, and this demonstrator is mainly used to verify four technologies: binary thrust steering/reverse thrust nozzle, integrated flight/propulsion control, uneven/soft field short take-off landing gear, and advanced human/machine interface.
Judging from these projects, this technical demonstrator modified from the F-15B will have outstanding maneuverability, and this maneuverability is obtained from the canard wing in front and the vector engine in the back!
The full-motion horizontal front wing is installed on the wall plate of the air intake on both sides of the demonstrator, which is not newly developed, but is improved from the F/A-18A horizontal tail, and the 20-degree upper reverse angle is added to facilitate the pitching and rolling torque generated by the same direction or differential deflection.
At the same time, the F-100 engine in the tail of the aircraft has also been improved, and a rectangular binary steering nozzle of carbon fiber composite materials is installed, which can deflect the engine thrust up and down relative to the longitudinal axis of the aircraft, with a maximum deflection angle of up to 20 degrees, which improves the take-off performance and maneuverability of the aircraft. Moreover, the thrust reversal blades in the nozzle can reverse the thrust to achieve emergency deceleration and short landing taxiing during flight, similar to the principle of passenger aircraft.
In order to control these extra control systems, the original hydraulic operation of the F-15 can no longer accurately control so many systems, so the fighter also introduced a digital fly-by-wire control system to achieve integrated flight/propulsion control, so that the aircraft can change the thrust without changing the original flight trajectory, and realize all flight parameter control.
Originally, with the help of powerful engines, the maneuverability of the F-15 fighter was already first-class among the third-generation aircraft, and after taking these means, the maneuverability was even better!
Historically, these improvements were completed almost in '88, and repeated test flights were carried out in '89-'91, but now, stimulated by the Soviet Union, the United States had to speed up the development of new fighters.
In the past, the Soviets' MiG-25 overwhelmed the Americans, but now, the Soviets' new generation of fighters, the MiG-29 and Su-27, are rapidly finalizing and equipping the troops, and the Americans are under great pressure. The current technology verification machine is not only a verification of technology, if it proves that the performance is reliable, maybe it will produce new fighters according to this standard.
And now, the plane was brought to Moscow to prove to the Soviets and the whole world that the most advanced aviation technology is still the United States!
Pilot Cruise, sitting in the seat, the engine in the tail has been started, there is a surging sound constantly, and his mood also follows the ups and downs. Since the first test flight of this plane, he has been piloting, and now, he is as familiar with this plane as his own body, as long as he sits here, holding the operating stick, he feels like he is integrated with the plane.
Audience, let me show you the power of this aircraft! For a long time, American aviation technology has been like alien technology!
"Zhukovsky, the eagle asked to take off." Cruise said in fluent English, as an international language, English still has an advantage, for example, now, since the Soviet Union said that the Moscow Air Show is an international air show, then when communicating on the radio, it must be in English.
"You can take off, pay attention to the airspace of the performance, and don't go near the audience." The sound of the tower came from the headphones.
Can't get close to the audience? If you don't get close to the audience, how can you make them feel deeply? Cruise thought to himself. At the current air show, there have not been several serious air crashes in the future, so Cruise did not take the warning to the tower to heart at all.
He pulls the throttle stick to the end, turns on the afterburner, releases the brakes, and after a few seconds, pulls the lever back!
The show starts with a short take-off!
With his operation, the fly-by-wire system understood what he meant, and took off in a short distance!
The improved engine has increased the thrust by 10 percent compared to the original, and there is no need to worry about the life at all, and now it is necessary to fight for a breath! Within a few seconds, the fighter increased to a speed of more than 100 meters per second! Then, as he pulls the lever, the canard wings in front rotate to provide a head-up moment, and the tail fins move together to the nose of the aircraft! The landing gear in front of it took off in an instant, and the landing gear in the back also left the ground after a second! Then, the vent of the engine is deflected downward, providing upward thrust while propelling the fighter forward!
Get up! And so it goes!
When the F-15 is in a volley operation, it is fully fueled, loaded with medium and short-range missiles, and has a glide distance of 274 meters, while in the case of empty and half fuel, it takes off in less than 240 meters.
And now? With the help of new engines, with the help of vector nozzles, with the help of canard wings, at a distance of less than 200 meters, the F-15 is already pulling onions on dry land and flying!
Fly! How is this possible! (To be continued.) )