The times are constantly advancing, and technology is also constantly evolving. This can be seen from the plane.
At the beginning, the first airplanes had different shapes and all kinds, but after World War I, the shape of the airplane was fixed, the fuselage, wings, and tail, for most of these, the engines were almost all in the front. .
In the jet age, the development began. Swept wings replaced the straight wings. The engine was installed at the tail of the fuselage. At the same time, the fuselage of the aircraft was also quite slender, so as to reduce the air resistance and start moving towards the speed of sound. Sprinted.
The same was true in the era of the second-generation aircraft. Later, the technology of variable swept wings emerged.
This technology originated from the exploration of the wings. The swept wings are suitable for high-speed flight, but the low-speed performance is very poor. Some high-speed fighters often fail when chasing low-speed propeller aircraft.
In this way, if the sweep angle of the aircraft can be changed, the flight performance problems at different speeds can be balanced. Therefore, a large number of variable swept-wing fighters began to emerge. Typical representatives are the F-14 Tomcat, F-111 fighter-bomber, Tornado fighter, and MiG-23, and so on.
However, the wing can be rotated, which leads to the complexity of the structure, inconvenience of operation, and increased failure rate. After that, the trend of the aviation world began to turn to the side wing, and the wing body merged these characteristics, like the typical Su-27 , The whole airplane looks like a lifting body, with an extremely smooth appearance and quite beautiful.
And now, it is the period of how to use the vortex lift to improve the performance of fighters at high angles of attack. Therefore, in this era, a notable conclusion is the outdated theory of variable swept wings.
At the same time, in fact, it is the same. After this era, any new fighter plane no longer uses variable swept wing technology and has returned to normal.
Now, Nathan said that if you develop on the basis of Tomcat, there will certainly be oppositional remarks. How to refute these remarks
Nathan smiled: "The variable swept wing is out of date? What a short-sighted remark. Our variable swept wing will never be out of date! No matter how aerodynamic technology develops, the flight performance of fixed wing will never be changed. It may really surpass the VG Wing!"
Those short-sighted guys came to fool Congress in this way, and those idiots in Congress agreed with this statement.
"Take our current fighter aircraft, relying on the mature variable sweep wing system design, the landing speed can be as low as 130 knots, while the previous F-4 ghost is 145 knots. Relatively, the variable wing also brings At high speed, we can reach Mach 1.35 at an altitude of 5,000 feet, and a maximum speed of Mach 2.51 at high altitude. Don’t forget that we can still carry 4 Phoenix missiles at this time!” Nathan said: “Let those guys in Congress Bibi, besides our Tomcat, is there any fighter that can do it?"
The current data can be achieved with the backward TF30 engine. If the latest engine is installed, the performance will definitely be further improved.
High-speed and high-speed, low-speed and low-speed, this is the biggest advantage of variable swept wings. Look at the Air Force’s current most advanced F-15. With two F100 engines, it only achieved 2.5 Mach at high altitude. Speed, but this is the case without any mounting. When the missile is mounted, it is only the Sparrow missile, and it can only reach about 2.0 Mach!
No fighter is comparable to the Tomcat. The Tomcat is invincible in the sky!
"This is the biggest advantage of our variable swept wings, if we continue to install new engines." Nathan said: "Even, we can achieve supersonic cruise without afterburner!"
What is cruising? That is the long patrol flight of the aircraft.
The speed of any fighter can almost reach supersonic speed, even a metamorphic cargo that reaches Mach 3 like the MiG 25.
However, these airplanes can only be reached after turning on the afterburner.
After turning on the afterburner of the fighter, the fuel will be consumed at an alarming rate. If it can normally fly for 3 hours, then turn on the afterburner and there will be no fuel in 15 minutes.
Therefore, with the exception of a few exceptions, most airplanes fly at supersonic speeds for a short period of time. If they can fly at supersonic speeds without turning on the afterburner, it absolutely requires abnormal engines.
This is the case with the later F-22. It relies on the powerful F119 engine, and the normal intermediate thrust without afterburner is 118 kN. You know, the current engine similar to the F100 has an afterburner thrust of only 129. Thousands of cattle!
When the F119 opens the afterburner, the thrust is as high as 178 kN!
Relying on the powerful engine, F22 realized the dream of supersonic cruise. In the confrontation with the F22 fighter, once the F22 enters supersonic cruise, it means that it will not play with you. On, the fuel soon ran out.
Take the analogy of the current Tomcat fighter. The current TF30 engine has an afterburner thrust of about 90 kN, while the F100 engine has an intermediate thrust of 65 kN. However, after continuous improvement, the subsequent engines of the F100 have intermediate thrust. A model with a thrust of 79 kN.
If you find such an engine and replace it with the Tomcat fighter, then it can be predicted that the Tomcat fighter will be able to easily achieve supersonic cruises with bombs around Mach 1.5!
Relying on this ability, any fighter will definitely explode!
And if the abnormal F119 engine is installed on the Tomcat fighter, then the Tomcat fighter can easily achieve supersonic cruises above Mach 2! It is enough to simply remove the afterburner.
Variable swept wings are obsolete? It can only be said that the performance is too powerful to use.
Look at the big bug again, when it is full of ammunition, give him an F119, it can't fly at supersonic speed.
Nathan said to everyone: "The advantage of the variable swept wing is that it is so powerful. We can easily achieve supersonic cruise at any time. Just look at the guys in the Air Force. I don't envy you!"
Nathan's words made everyone in front of him light up. That's right, just this one advantage is that nothing else can replace it. The current problem is that the engine is not powerful.
In later generations, when the Tomcat developed to the F-14D, it was replaced with the F110 engine. This engine emphasizes reliability, so the intermediate thrust is not strong. If it is replaced with a strong engine, it will be supersonic cruise. It has been realized long ago, and this is one of the standards of the fourth-generation machine!
"If necessary, I can go to Congress to start a debate with them at any time." Nathan said: "Let them know that they are ridiculous. Of course, we also have to improve our fighters."
PS: There are too many data, I don’t know if the reader conference will not be annoying. When Huadong Zhixiong writes these, it is actually quite a pity. If all these are realized, it can be said that the invisible tomcat is the ultimate improvement It's even better than F-22. Yes, Huadongzhixiong is a Tomcat fan. I hope that in this book, I can write about the last stealth cat vs. Su-27. (End of this chapter)