Although the bubble cockpit of the F-15 has a good rearview view, the tall ejection seats block the view from looking backwards, and Dick has no idea how serious the engine fire behind him is, only the smoke billowing from the back, and the engine fire alarm in the cockpit is constantly sounding. Pen & Fun & Pavilion www.biquge.info

Today's fighters are full of fuel and ammunition, especially aviation kerosene, which is in danger of exploding at any time! Major Dick was shrouded in the threat of death at this moment, and he was afraid that in the next moment, the entire plane would explode violently and blow him into a fireball!

Major Dick hesitated for only a second before pulling the ejection handle of his seat.

Major Dick, who was ejecting his legs together and put his legs together, was successfully ejected from the cockpit with the caco-clamour of the cap-breaking gun piercing the roof out of the hole!

The initial production F-15 fighter was equipped with McDonnell Douglas' ACESII ejection seats, which still have zero-zero life-saving capabilities. At zero airspeed and zero altitude, the ejection mechanism is activated in 0.3 seconds, the rocket starts in 0.45 seconds, the person and chair are separated after 1.3 seconds, and the parachute is opened after 2.3 seconds.

Listening to the whirring wind in his ears, Major Dick was overwhelmed by the huge overload of the ignition of the rocket seat, and then his body stopped rising, the seat separated, and as soon as his body tightened, the parachute had opened.

Only then did he open his eyes, and when he looked down, his face turned pale.

****！

The right engine, still billowing smoke, and the left engine, still working normally, pushed the fighter plane and continued to glide on the runway, but in just two seconds, there was a yaw, and under Dick's gaze, the unmanned gliding fighter plane plunged headlong into the tarmac on the side of the runway!

Four F-15 fighters were refueling and hanging bombs there, preparing to take off, and when they found that the plane was rushing over, all of them ran to the side like crazy, but unfortunately, their two legs couldn't outrun the fighter at all! In this way, Major Dick's fighter plane rushed into the place, collided with other fighters, collided with the ground crew refueling truck on the side, and then, a larger and more violent flame appeared!

Even Dick's parachute, which seemed to be pushed by the air currents from the explosion, stalled for a moment, and Major Dick seemed to be able to feel the heat of the air wave.

I'm in trouble! Before ejecting, at least turn off the engine, stop the fighter! Major Dick closed his eyes.

The fire engine at the base sounded the alarm and quickly headed towards the place of the explosion, but the flames that rushed to the sky were not so easy to control!

With his legs on solid ground and watching the people around him nervously rush to the fire, Major Dick felt a trance in front of him.

Yokota, U.S. Army Command.

"There was an accident at the Misawa base." Lieutenant General Paul listened to the news he had just received: "An F-15 engine failed, and after the pilot parachuted out, the fighter plane crashed into the tarmac, crashing four F-15 fighters, and the fuel truck exploded as a result, and the Misawa base has now extinguished the fire, and it will take two hours to restore the ability to operate." ”

As a forward base to support air combat in Hokkaido at any time, the Misawa base deploys the most important F-15 fighter jets of the U.S. military! Now, the F-15 fighters at the Misawa base, there has been such an accident!

Lieutenant General Paul's face is very grim, the chain fell at the critical moment, and some people must be held responsible!

"In addition, the technical experts of McDonnell Douglas conducted a failure analysis at the scene, believing that the F-15 fighter that first caught fire due to engine failure was caused by the rupture of engine compressor blades, and hoped that we would ground all F-15 fighters and confirm their safety before resuming flight after a comprehensive inspection."

"What?" Lieutenant General Paul stood up: "Our F-15 fighters, all engines are fully tested before they can return to flight?" McDonnell Douglas's request came at a better time! Connect me to McDonnell Douglas now! ”

Now, if you want to seize air supremacy over Hokkaido, you must rely on a powerful third-generation aircraft like the F-15! Only the F-15 will be able to have sufficient technical superiority! Lieutenant General Paul pinned all his hopes on the F-15, and in the entire island region, the U.S. military and the Air Self-Defense Force of the island country have been equipped with hundreds of F-15s! In the narrow airspace of Hokkaido, there is enough to seize air supremacy, and there is no need for F-4 to play.

But now, the battle is about to start, and McDonnell Douglas says it wants to ground the F-15? Lieutenant General Paul really wanted to pull out his pistol at this time, point it at the head of the head of the McDonnell Douglas Company, and ask him if he was serving the KGB!

"Hey, I'm Lieutenant General Paul, what's going on with the grounding of our F-15s?" After answering the phone, Lieutenant General Paul suppressed the anger in his heart and asked on the other side of the phone.

"Report General, I'm Smith, an engine engineer at Hewlett-Packard." The words on the other end of the phone were a little blunt: "The engine that just ran out of control was caused by the broken blades of the compressor, this is not an isolated case, we suspect that this batch of engines has the same problem, and it must be tested one by one to be determined." Now we are dismantling the engine of another F-15, and it has been discovered that there are cracks in the blades of the compressor, and in a fierce air confrontation, the cracks in the blades can easily expand and break, and in this way, it is not good for our pilots. ”

(Pratt & Whitney, PW, not HP, HP, Pratt & Whitney makes engines, HP makes PCs, and there is no gross relationship.) ）

The engine of another F-15, after being disassembled, also found cracks in the compressor blades! This shows that this is definitely not an isolated case, and it is a sign of a serious accident!

F100, the thrust-to-weight ratio of the engine manufactured by Pratt & Whitney Company in the United States, the degree of advancement is staggering, in later generations, Huaxia has developed turbofans for more than ten years, and the technical indicators are still not as good as F100, you know, F100 was put into use in the seventies! Moreover, the total development time is less than four years!

The designers considered the high performance requirements of the engine, which were highly emphasized by the user: high thrust and high thrust ratio, and a large number of advanced technologies were adopted at that time, such as the selection of typical "2 high and 1 low" thermal cycle parameters, that is, high boost ratio, high pre-turbine temperature, low bypass ratio, and a large number of new materials, new processes and new structures, such as titanium alloy materials have reached more than 25% of the total weight of the engine; It is the first to use IN100 powder superalloy to manufacture 11 components such as large-diameter turbine discs and compressor discs, and PWA1422 directional solidification superalloy to manufacture turbine blades; In terms of processing technology, advanced processes such as precision casting, hot isostatic pressing (HIP), and electron beam welding (EBW) are adopted......

However, this hastily launched engine also has a disadvantage, and this disadvantage is reliability! (To be continued.) )