Chapter 915 (1/2)
Last night, baozixuan went back to the hotel alone. Little MacDonald was not surprised at this. As a recognized saint in the world, I really don't know what kind of woman I like.
But because of this move, old William appreciated and feared the richest man in Bao more. The man who is younger than him looks almost flawless. It's incredible.
Little MacDonald smiled and said, ”bag, my friend. Sometimes you can't be too strict with yourself. You can relax occasionally. Of course, this is just my humble opinion. Don't care too much; Just as a joke. ”
They are not yet familiar with the point of interfering in their private life, but want to win more opportunities for Debbie Dickinson. I promised Janice Dickinson when I came here this morning.
Steamed stuffed bun Xuan didn't care, but smiled and said, ”what's the arrangement today? I want to go to McDonnell Douglas workshop. I don't know whether it's convenient or not.”
Customers can visit McDonnell Douglas production workshop. We must let others know the manufacturing technology of our company's aircraft, otherwise who will pay easily.
Bao Zixuan's identity is somewhat special. On the surface, he is a partner; At the same time, it is a competitor. It is an expert in the field of aircraft manufacturing, and the problem of leakage should not be underestimated.
But at this time, Bao Shoufu has proposed, don't you agree. How to cooperate after that? Boeing is the strong enemy.
Little MacDonald: ”of course, all McDonnell Douglas Aircraft workshops are open to you, including orders for the Ministry of defense.”
In this way, little MacDonald drove to the production workshop with baozixuan and his party.
This is McDonnell Douglas after all, and little MacDonald is very familiar with it; Besides, as the host, we must introduce the products on the production line to the guests.
First, I came to the passenger plane production workshop. At a glance, baozixuan saw the aircraft being assembled on the production line - DC10.
DC-10 is an American Douglas company. Of course, it has been incorporated into McDonald's company. The three engine medium and long-range wide fuselage airliner developed in response to the needs of American aviation can also be used for military purposes.
DC-10 has less passenger capacity than B747, and its range is similar to Boeing 747. It can not only fly routes across the United States, but also fly international routes. The development plan was launched after the merger of Douglas company and McDonald company in 1967.
With the advent of the oil crisis, the use cost of three engine airliner has increased sharply. In the 1970s, the Airbus A300 wide body aircraft newly designed by European Airbus began to be delivered, equipped with two high bypass ratio turbofan jet engines with greatly improved performance. The relaxation of extended flight restrictions on twin engines has further widened the route range of twin engines, which is enough to fly transatlantic flights. The A300 is significantly better than the L-1011 and DC-10 in performance and cost, and is very popular in the 250 seat wide body aircraft market. DC-10 gradually loses orders due to relative fuel consumption.
Since 1972, DC-10 has been involved in many major air crashes. Baozixuan has little interest in products destined to be eliminated. And facts have proved that the three engine airliner is very immature at the present stage, even worse than chicken ribs.
Seeing that steamed stuffed bun Xuan is not strong, little MacDonald took him to other assembly lines.
Bao Zixuan himself is disgusted with the three engine airliner. Staying here too long will only increase his troubles.
A military transport plane appeared in front of everyone, and even military fans basically didn't know his name; Fortunately, baozixuan has seen the technical data of the aircraft.
In the 1970s, the U.S. Air Force planned to select one of Boeing yc-14 and McDonnell Douglas yc-15 for production, that is, it tried to bid with Boeing's yc-14 and McDonnell Douglas's yc-15, and then the winner replaced the C-130. Finally, this plan was cancelled because the development cost and performance were no better than the C-130. This is the most famous advanced medium-sized short takeoff and landing transport aircraft plan. This competition for medium-sized jet transport aircraft led to the advent of Boeing yc-14 and McDonnell Douglas yc-15,
Unlike yc-14, McDonnell Douglas yc-15 does not ”blow to the upper surface of the wing” like yc-14, but ”blow to the lower surface of the wing”, which is the externally blown flap technology.
Yc-15 adopts four Pratt Whitney jtsd-17 turbofan engines with a single thrust of 71 kn. The engine is installed under the front of the wing, its nacelle almost completely extends out in front of the wing, and the tail nozzle is close to the lower side of the leading edge of the wing.
Its basic principle is that the engine jet blows along the lower surface of the leading edge of the wing to the double slot flap, and then the drainage function of the double slot flap leads the jet to a large downward deviation angle, so as to improve the lift coefficient and shorten the take-off and landing distance. Therefore, it is also called ”lower surface blowing and lifting technology”. Yc-15 can take off and land on the runway within 572 meters when carrying 150 soldiers or 36.7 tons of cargo.
Although yc-15 aircraft did not obtain the service qualification, the development experience of this model directly led to the birth of McDonnell Douglas C-17 ”global overlord” transport aircraft.
C-17 aircraft is the US military and the most advanced military transport aircraft in the world. C-17 has been experimentally improved on McDonnell Douglas yc-15 test machine, especially the blowing flap technology, supercritical airfoil, reverse thrust device and head up display device verified on yc-15 aircraft.