Chapter 544

After listening to Lin Guanghua's words, Zhuang Jianye frowned subconsciously.

Now Tengfei group does have turboshaft engine, which is derived from the improvement of D-30 series gas turbine power plant based on hx-4-1 core engine.

According to different technologies, the d-30-z series turboshaft engines are roughly divided into three versions, with power ranging from 296kw to 554kw.

At that time, Tengfei did not have any plans for its turboshaft engine. Just as the turboprop engine was gradually maturing, it wanted to make use of the mature reduction gearbox, transmission mechanism, bearing combination and control system of the turboprop engine, plus the derivative of the hx-4-1 core engine, so it was ready to do some further research In addition, it was transformed into a special turbine shaft engine for helicopter.

Due to its experimental nature, the benchmark model selects the D-30 series gas turbine power plant, which is very mature in Tengfei aviation power, hoping to accumulate experience for the conversion of d-40 series or d-50 series into turboshaft power in the future.

Because of this, the d-30-z series turboshaft engine has been in the substantial research stage since a year ago. Originally, it was not anxious to take off the aviation power. Anyway, it was an experiment. For the following models of mice, the problem to be solved was whether there were any problems, and the good and bad could only be digested later.

So when to take it out, Tengfei group is very Buddhist.

However, after the informed ministries and commissions learned the specific parameters of the d-30-z series turboshaft engine developed by Tengfei aero power, they immediately sent several expert groups to Tengfei aero power to conduct extremely detailed investigation and demonstration on the d-30-z series turboshaft engine.

Finally, the conclusion is that the d-30-z series turboshaft engine is in line with the supporting power scheme of the light multi-purpose military and civil helicopter just put forward in China, and should be supported in principle.

The name of the light multi-purpose military civilian helicopter is very long. In fact, it is the later zhi-11 helicopter.

In the background of the early stage of the zhi-9, the mid-term of the zhi-10 and the beginning of the new era of the zhi-20, the sense of existence of the zhi-11 helicopter is actually very low.

But low does not mean unimportant. In fact, the starting point of zhi-11 is still very high, because its benchmarking models are French "squirrel" series helicopters and American bell-206 series helicopters.

These two helicopters are world-renowned light helicopters, especially the bell-206 series helicopters of the United States. According to different needs, many sub models have been derived, among which the most important are three: one is the passenger sightseeing model, the other is the helicopter trainer, and the last is the military model.

The first is the most common civil model, including the driver, carrying seven people or lifting the same weight of equipment, used for short-distance passenger transport, ground and air mapping, aerial photography and other purposes.

The second is the daily training of helicopter pilots and the adaptive training of go around pilots. After all, the maintenance cost and use cost of light helicopters are relatively low, which is an ideal platform for helicopter training.

The last and most important type is the light Armed Reconnaissance Helicopter. The most typical is the bell-206 series helicopter improved model oh-58a "Kiowa" light Armed Reconnaissance Helicopter.

As the main component of the rapid assault force of the U.S. Army's aviation force, the helicopter forms a low altitude fire strike system with the AH-64 "Apache" armed helicopter, which combines high and low altitude fire with light and light. It is specially used to counter the Soviet steel flood that may break through the iron curtain on the European fields.

As for the effect, the Gulf War a few years later is the best proof.

Of course, China doesn't expect what will happen in a few years, but in recent years, several French "squirrel" series helicopters and American bell-206 series helicopters have been introduced through civil aviation, and they feel very good after using them.

In particular, a large number of helicopter pilots are needed in the army, whether it is the army air force which has not been established for a long time, or the helicopter force which has been provided by the air force itself, or the ship borne helicopter force which has been expanded by the Navy, and the cultivation of professional helicopter pilots is bound to require professional helicopter trainers.

However, due to the lack of domestic understanding of this aspect, the helicopter trainer was still blank until the end of 1980s. Compared with the perfect fixed wing trainer and training system, the gap is not one and a half stars.

What's more, light helicopters also play an important role in front-line reconnaissance, armed assault and fixed-point anti tank. Especially after the introduction of the French "little antelope" light armed helicopter, the Army Air Force has a high evaluation of this flexible and light helicopter platform. It is hoped that similar equipment will be available in China as an important force in aviation reconnaissance and ground to air anti tank, After all, on the northern border, China is also threatened by the flood of Soviet steel.

Therefore, under the promotion of various parties, the theory of the light multi-purpose military civilian helicopter began to demonstrate in 1986, and the basic structure was formally determined in 1988, and then it was officially developed.

Like many domestic aircrafts, the light multi-purpose military and civil helicopter also has uncertainty in power. According to the plan of the development project team, the light multi-purpose military and civil helicopter adopts the vortex shaft 8 which imitates the French ahye series vortex shaft engine.With the introduction of the domestic turboshaft engine along with the French "dolphin" helicopter, the overall performance is not bad, which fully meets the needs of the light multi-purpose military and civil helicopter.

However, the localization has been stumbling. The research and development project team of the light multi-purpose military civilian helicopter went to the manufacturer of vortex shaft 8 several times. Although the manufacturer made a promise, the leaders of the research and development project team are still worried. They are all old birds in the aviation industry. Who hasn't experienced the embarrassing situation of aircraft and other engines?

In order that the light multi-purpose military and civil helicopter will not fall into the old pattern of power system, and turn a sketch into a tedious soap opera series, another power replacement must be provided.

This is also the common practice of the world's major aviation production giants. Take Airbus for example, their aircraft usually has three power schemes, namely, RORO, Pratt & Whitney and GM. to put it mildly, this is called the standby scheme. To put it mildly, it is not allowed to hang on a crooked neck tree. Otherwise, my aircraft is designed to seize the market, and I find that the power has not come out Airbus has to cry to death.

In the past, there was no such condition in China. After all, there were only a few aero-engine manufacturers in China. Due to historical reasons and planning system, only turbojet can be produced. To produce turboshaft, it is necessary to produce turboshaft honestly. They do not belong to each other, and they make a clear distinction between them. There is a kind of old and dead attitude.

In the face of this situation, the R & D project teams of various aircrafts can only hand over the power part to a certain classification plant for development according to the instructions of the ministries and commissions. As for when it will be completed and the aircraft will be installed to complete the finalization, only God knows.

But now it's not the same. As long as it's related to aerospace, it's almost involved. Especially in aero-engine, it's completely out of the Ministry's plan and the pattern of manufacturer's production. With silent investment and hard research and development, several series of gas turbine power plants have been formed in a few years.

The R & D project team of the light multi-purpose military and civilian helicopter, looking at this, was waiting for anything. Without thinking about it, they decided to use the d-30-z series turboshaft engine as the backup power of the light multi-purpose military and civilian helicopter and set up the project by subsystem.