Yun Qi, or how can the new boat series be changed in the future? Anyway, Yang Hui really can't think of how this guy can develop in terms of technical positioning, in fact, the last face Xinzhou is almost like that, and if it can carry 70 passengers, it can be regarded as the top of the sky, and any more is redundant.

As for the fact that it is really like the last face, the first flight institute and the 172 factory cooperated to change the airfoil and change the turbo slurry turbofan, to make an aircraft similar to the EMB-145, Yang Hui himself is very unoptimistic anyway, in the later republic's high-speed rail army, the regional airliner is really not too big a place to survive, and the only Tibetan plateau route is almost enough to use the Xinzhou 60.

Let the MA72 series develop according to the old way of the previous one, as long as the United Airlines airliner company can make a reputation, the sales of the same MAoC series aircraft will definitely be much better than the previous one, and the frontal competition with the ATR-72 will not be any problem, at least the MA75 series aircraft will be more than a star and a half more beautiful than the ATR-75.

The only thing that is still a little regrettable, I'm afraid it should be that the engine of this aircraft does not have a domestic counterpart, not to mention any turbo five series engines, if it is not for the domestic military transport aircraft to have this need, I am afraid that there will be no future for a long time, look at the fuel consumption, that power, volume

If a new domestic engine can be developed for this aircraft, it must be perfect enough.

And to say that the development of a corresponding turbo engine, this is no longer any problem for the current Southwest Science and Industry, the turbofan engine of Southwest Science and Industry starts from a missile engine of several hundred kilograms, and the entire range can be regarded as full coverage of eight tons. Some engines may still be in the final stages of development, but the core engine of the whole series has been fully finalized.

In addition, Southwest Science and Industry frantically ordered the gear transmission technology tree. Whether it is fixed-shaft transmission or planetary gear transmission technology, it can definitely be ranked in the forefront of the world now. The roadblocks (reducer, core machine) of the turbo pulp research and development can be regarded as a comprehensive purge, as long as there is this need, Southwest Science and Industry can immediately set up the project.

Even if it is to develop a PT-400D-6 turbo engine comparable to that used in the European A400M transport aircraft, Southwest Science and Industry can also take over the task, PT-400D-6 uses the core engine of the M88 military thrust turbofan engine as the core engine, which is the same level as the turbofan 12 military thrust core machine in terms of air flow, so Southwest Science and Industry has stock!

PT-600D-6 adopts a three-axis design scheme, and the planetary gear reducer used in CG-2000 can also achieve the same effect.

If you insist on saying that there are still some places in Southwest Science and Industry, it should be in view of the gap in the development time of the engine between the two sides. This plane is only in the nineties, and the last plane developed PT-600Y was already in 2010, so Southwest Science and Industry is now developing PT600 This level of engine should have some power loss, fuel consumption may be higher, but Yang Hui dares to guarantee that it will never deviate too much, which is within an acceptable range.

Of course, neither now nor in the foreseeable future, it is impossible for the Republic to develop a transport aircraft of the A400M class, so there is no need for a big guy with up to 11,000 shaft horsepower like the PT-600. Even if it is the Y-9, it is enough to use only a 5000 shaft horsepower engine, and the turbo 6C engine finalized in the 607 not long ago is completely sufficient.

The use of the core engine can develop a turbo engine with up to 10,000 shaft horsepower, so it will not be a problem to develop a new generation of turbo engine for the Xinzhou series based on the core engine of the smallest turbofan 11 engine in the Southwest Science and Industry turbofan engine series. Even compared with the original Pratt & Whitney Canada PW-127C engine installed in Xinzhou, the performance will definitely not be weak.

But the problem now is that the new boat series uses the PW-127C engine, which is a large part of the reason why the new boat can get the FAA airworthiness certificate. There are also reasons why the civil aviation company trusts the Canadian PW127 engine in the purchase of aircraft, otherwise why would the French also use the PW125 engine when developing the ATR72. And not by Turbomeca to develop a turbo engine?

It is true that Yang Hui also admits that the domestic army needs an engine of the same level, after all, the national conditions of the Republic and France are different! We will definitely not be able to purchase PW-127C engines for military use. But Yang Hui still doesn't think that Southwest Science and Industry needs to develop such an engine now.

On the one hand, the state has no money to support this project, and it is not cost-effective to let Southwest Science and Industry pay for it themselves, and now there is a large number of projects that need to spend more money, and the current 607 Institute should not be able to allocate enough resources to do this project, they are stepping up the development of MS-4 engines for Embraer's 145 passenger aircraft.

Besides, the army's requirements for Yunqi are not too high now, and everyone has the attitude that they can use it and are relatively satisfied, and Yang Hui is too lazy to join in the fun.

Of course, if the Republic Navy needs an aircraft carrier carrier aircraft in the future, it will develop a transport aircraft with the same combat mission as the U.S. C2 Greyhound transport aircraft, then it may be necessary to re-develop an excellent engine to install the Y-7, and the aircraft carrier will be a big guy of the same level as the C2 Greyhound transport aircraft.

But after 2000, as the performance of large aircraft carriers increased, did it still need to use an old turboprop-powered aircraft as a carrier-based transport aircraft platform?

Even in the 80s, when Mao Zi was developing carrier-based early warning aircraft, he chose a turbofan engine-powered transport aircraft as a platform, and the US military was also preparing to develop a replacement for the C-2 in the 90s, and set up a research program of "shared aircraft carrier support aircraft", which was also a very wise choice to abandon the turbo engine and use the turbofan engine as the power instead.

And the reason why the US imperialists still let the C-2, a turbo aircraft, operate on aircraft carriers in the new century, is because there is no need to be too anxious to replace the support aircraft-based aircraft platform, and the old C2 can continue to be used if the life of the old C2 is extended, but this does not mean that the Navy carrier-based transport aircraft must use the same turbo engine as the US imperialists, and the reason why that guy is saving Zài is no different from the US imperialist B52 shouting that it will fight for another 20 years.

If the Navy needs carrier-based transport aircraft later, in fact, the transport aircraft platform for the An-71 AWACS aircraft of the Antonov Design Bureau should be the best choice, and after the fuselage of that aircraft is brought back to the Republic, it is completely feasible to change the engine to the CG-2000 engine, and the big plate on its vertical tail can also be honorably said goodbye.

Anyway, when the Republic really needs to install carrier-based early warning aircraft on aircraft carriers, it should have developed airborne phased array early warning radars a long time ago, and when the time comes, it is the king to use the radar fuselage on both sides like the Israeli G550 early warning aircraft, so that the aerodynamic impact on the aircraft is absolutely minimal, and there is no need to install a mechanical scanning radar on the vertical tail like the An-71, and there is no need to strengthen the vertical tail and add additional weight.

Such an early warning aircraft is a modern carrier-based early warning aircraft, and its performance is stronger than the C-2 early warning aircraft by more than one grade in any respect, (ps, don't use the low speed of the turbo aircraft to speak, the jet of the carrier-based aircraft is the right way) Moreover, the fuselage platform of the An-71 early warning aircraft can not only be used as an early warning aircraft.

Do the math, it seems that large aircraft carriers have a need for transport aircraft, right? This guy is completely competent, if you change it again, it will work completely as a fixed-wing carrier-based anti-submarine aircraft, and even changing this guy into a dedicated carrier-based air tanker will not be a problem.

(To be continued.) )