On May 28, the M40 transport aircraft has carried out a number of taxiing tests, and at this time, Xiao Weiguo and his two wives, Bai Wanrou and Anna, also entered the Dragon Soul Aircraft Manufacturing Co., Ltd. The first flight of the M40 transport aircraft is of great significance, and Xiao Weiguo attaches great importance to it, so he will personally supervise the completion of the entire first flight. After all, the M40 transport aircraft is an aircraft that adopts a number of new technologies, and it is the first time that Dragon Soul Aircraft Manufacturing Co., Ltd. has designed and developed such a large aircraft, and it also uses a turboprop engine, so the risk of test flight is very large.

On the morning of May 30, 1934, a huge yellow large transport plane appeared on the large runway of the test airfield of the Dragon Soul Aircraft Manufacturing Co., Ltd.! This large runway is specially built for large aircraft, and the test airport of Dragon Soul Aircraft Manufacturing Co., Ltd. has 4 runways, two of which are 2,000 meters long, for small and medium-sized aircraft test flights. The other two are 3,000 meters long and 45 meters wide, which are used for test flights of large aircraft.

The huge yellow M40 transport plane's wide wings are almost reaching the edge of the entire runway! Now it stands quietly at the start of the runway, waiting for the last taxi test. A group of ground staff in blue uniforms were busy under it, powering up, testing, refueling......

Xiao Weiguo, Bai Wanrou, Anna, Heelum and other R&D personnel were next to the No. 01 machine, watching the ground staff work around it. In order to tow it out of the factory, a large truck was also used, and the manpower could not push the large aircraft, so it had to be towed by a car. Large trucks are good for part-time jobs.

Xiao Weiguo's mood is even more excited, today he wants to personally sit on this large transport plane that he personally designed to experience the last taxiing test, it is impossible to say that he is not excited! In another time and space, Xiao Weiguo has already taken the Chinese-made Y-7 transport plane many times, of course, he has also taken the improved MA60 passenger plane many times, and now he wants to see what the difference between the two is, maybe the M40 transport plane will surpass the Y-7 aircraft in some aspects. Of course, that refers to the basic type of Y-7, if it is a MA60 passenger aircraft, forget it. The power plant of the MA60 adopts Pratt & Whitney Canada PW127J turboprop engine, with a maximum power of more than 3,000 horsepower and a first overhaul life of 6,000 hours. In the event of a failure of one engine, the power of the other engine is automatically increased to the maximum take-off power, and the driving system is changed to a two-person driving system. A new electronic airborne equipment was used, equipped with the American Collins APS-85 autopilot system. It has flight guidance and autopilot capabilities, and can meet Class II blind landing. In this day and age, there were no such advanced electronic devices.

Now a transport aircraft with a turboprop engine will go to the stage of history ahead of schedule! There were not many people watching the taxiing test, that is, the designers and engineers of the design team and the test team of the Dragon Soul Aircraft Manufacturing Co., Ltd., as well as some ground crews, a total of only more than 40 people. In charge of this taxi test pilot task were several very experienced test pilots from the Dragon Soul Aircraft Manufacturing Co., Ltd., who were all selected by Xiao Weiguo from some retired pilots in Europe with high salaries, at 10 o'clock in the morning. Ground crew reports that the aircraft is ready for taxiing test!

Xiao Weiguo took the lead and entered the cockpit from the boarding gate! His mood was so excited that even his hands kept trembling slightly! This taxi test is the last taxi, and two days later, on June 1, it will take off for the first time according to the test plan node!

The first is to power on again to check whether the equipment in the cockpit is normal, and then it is to start the 2 wind and thunder turboprop engines in turn according to the specified starting procedures! Driving Green carefully turned on the starter, one hand on the throttle lever of the No. 1 engine. With a slight shake of the plane's fuselage, Engine No. 1 started successfully! After the smooth operation of engine number one. Pilot Juan then checked the oil pressure, and this time the engine oil system was working properly. If it does not rise to the stated value. The engine may not be properly lubricated, so the engine can be shut down to check the cause of the problem, and the first coasting test can be delayed. It seems that today's luck was good, after the successful start of engine number one, it was followed by number two. Fortunately, today's two typhoon thunder turboprop engines are very cooperative, and there is no trouble, which shows that it is still relatively stable and reliable after the test flight finalization!

2 Typhoon Thunder Turboprop Engine Started! The personnel involved in the test checked all the equipment and instruments in the cockpit again, and everything was normal! This is where you can get into the test of gliding. After receiving the signal, several ground crew members hurriedly ran under the plane and removed the aircraft tire fixing groove placed in front and behind the main landing gear tires of the aircraft.

Green carefully increased the throttle stick travel, and the speed of the 2 wind and thunder turboprop engines slowly increased, and at this time it was still a slow state, and the total power of the 2 engines also reached 500 horsepower! As the engine speed increased to more than 1,000 revolutions per minute, the M40 large transport plane finally moved, and it was slowly gliding forward! At this time, the speed is about the same as the speed at which a person walks. The entire airport was filled with the roar of engines and the sound of propellers cutting through the air, which didn't sound so good, but showed the power of the engines.

When you start taxiing, test whether the brakes are working properly as soon as the aircraft starts moving. The crew carefully increased the power to allow the aircraft to move forward slowly, then lowered the throttle and applied smooth pressure to both brakes at the same time. Fortunately, the plane's two brakes responded very sensitively, and with just a slight amount of pressure, the plane was about to stop. The braking test is also an important part of the first slip, and if the braking action is not satisfactory, the engine should be shut down immediately.

But as the throttle continued to increase and the engine speed increased to 3,000 rpm, the M40's massive fuselage accelerated forward and taxied faster and faster, with little or no effect on the direction of the aircraft when gliding at the right speed in windless conditions. However, when the speed of the M40 transport aircraft reaches the low-slip speed limit of more than 70 kilometers per hour, in addition to maintaining the direction of the landing gear, it also relies on the ailerons and flap rudder surfaces for attitude control!

The vibration of the fuselage is increasing, and the crew members sitting in the seats also clearly feel the centripetal acceleration forcing them to press down on the seats, and the taxiing speed is close to 200 kilometers per hour! It's time to reduce the throttle and slow down, and the M40 transport plane is already taxiing into the middle of the three-kilometer runway! (To be continued.) )