Chapter 717： F-15 S/MTD verification machine

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At three o'clock in the afternoon, the sky was clear, and Zhukovsky was full of voices.

Sitting in the shaded tent, looking at the runway in the distance, raising the telescope in hand, the highlight of the air show, the air show finally began.

When a red-and-white fighter jet with NASA painted on its tail slid onto the runway, everyone stood up from their seats. What was that? Is it the American show machine this time?

In appearance, this aircraft is very similar to the F-15, with tall double vertical tails, rectangular air intakes on both sides, and a bubble cockpit. A pilot is waving to this side, but, in front of the main wing, that What is the toy? Why do you have an extra pair of small wings? That thing, a little upturned, seems to be able to move? What is this? Canard wings?

Hmph, sure enough, this is the thing, the technology verification machine was brought here! Standing on the conning tower, looking at the fighter planes on the runway below, Andre couldn't help sneering in his heart, Americans, didn't they all claim that the best canards were on the enemy's plane? Even the three-wing layout that Andre rejected, the Americans still tried it!

Of course, this is not the final shape, the model of the equipment unit, this thing is just a verification machine!

The F-15S/MTD is an advanced technology demonstrator for the F-15 short take-off and landing and improved maneuverability developed by McDonnell-Douglas for the U.S. Air Force Wright Institute of Aeronautics in 1984. The verification machine is actually to verify advanced aviation technology, and this verification machine is mainly used to verify 4 technologies: binary thrust steering/reverse thrust nozzle, integrated flight/propulsion control, uneven/soft field short distance Takeoff and landing gear and advanced man/machine interface.

Judging from these projects, this technical demonstration aircraft modified from the F-15B will have outstanding maneuverability, and this maneuverability is obtained from the front canard and the rear vector engine!

The full-moving horizontal front wings are installed on the upper walls of the air inlets on both sides of this demonstrator. This horizontal front wing is not newly developed, but improved from the F/A-18A horizontal stabilizer, and an increase of 20 degrees is added. The dihedral angle is convenient for co-direction or differential deflection to generate pitch and roll moments.

At the same time, the F-100 engine at the tail of the aircraft has also been improved. A rectangular binary steering nozzle of carbon fiber composite material is installed, which can deflect the thrust of the engine up and down relative to the longitudinal axis of the aircraft, and the maximum deflection angle can reach 20 degrees. The take-off performance and maneuvering flight performance of the aircraft are improved. Moreover, the thrust reversing blades in the nozzle can reverse the thrust, and realize emergency deceleration and short-distance landing roll in flight, which is 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. Therefore, this fighter also introduced a digital fly-by-wire system to achieve integrated flight. / Propulsion control, so that the aircraft can change the thrust without changing the original flight trajectory, and realize the control of all flight parameters.

Originally, with the help of powerful engines, the maneuverability of the F-15 fighter is already first-class among the three generations of aircraft, and after taking these measures, the maneuverability is even better!

Historically, these improvements were almost completed in 1988, with repeated test flights between 1989 and 1991, but now, stimulated by the Soviet Union, the United States has to speed up the development of new fighters.

In the past, the Soviets' MiG-25s overwhelmed the Americans, but now, the Soviets' new generation of fighters, the MiG-29 and Su-27, are rapidly finalizing and equipping troops. The United States People are under a lot of pressure. In addition to intensively developing their own fourth-generation fighters, the improvement of existing fighters is also the key content. The current technology verification machine is not only for verifying technology. If it proves that its performance is reliable, it may produce new fighters according to this standard.

And now, bringing this plane to Moscow is also to prove to the Soviets and the world that the most advanced aviation technology is still the United States!

Pilot Cruise, sitting in the seat, the engine at the rear has been started, and there are constantly surging sounds, and his mood also fluctuates. Since the first test flight of this plane, he has been driving it, and now, he is as familiar with this plane as he is with his own body. As long as he sits here and holds the control stick in his hand, he feels that he is integrated with the plane. .

Audience, let you see the powerful performance 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 proficient English. As an international language, English still has an advantage. For example, now, since the Soviet Union calls the Moscow Air Show an international air show, it can be used in radio When communicating inside, you must use English.

"You can take off, pay attention to the performance airspace and don't get close to the audience." The voice of the tower came from the headphones.

Can't get close to the audience? If you are not 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 accidents in later generations, so Cruise did not take the warning to the tower at all.

He pulled the throttle lever to the end, turned on the afterburner, released the brakes, and after a few seconds, pulled the lever back!

The show starts with a short take-off!

With his operation, the telex system understood what he meant, and took off at a short distance!

The improved engine, the thrust has increased by 10% compared with the original, there is no need to worry about the life span, and now it is time to fight for it! Within a few seconds, the fighter plane accelerated to a speed of more than 100 meters per second! Then, as he pulled the operating lever, the front canard turned to provide a head-up torque, and acted together with the tail at the rear to tilt the nose! The front landing gear vacated instantly, and the rear landing gear also left the ground after a second! Then, the nozzle of the engine is deflected downward, pushing the fighter forward while providing upward thrust!

Woke up! Just got up!

When the F-15 was in an interception operation, it was full of fuel and mounted a medium and short-range missile, and the sliding distance was 274 meters. When it was empty and half-fueled, it took off less than 240 meters.

And now? With the help of the new engine, the vector nozzle, and the canard wings, the F-15 has already pulled the green onion in the dry land and flew up in less than 200 meters!

fly! how can that be! (To be continued.) Mobile users, please browse and read for a better reading experience.