Back order? 延期交货_其他_趣味英语-查字典英语网

Back order? 延期交货

In other words, your pay day is pushed BACK, back, that is, into the future.

Hopefully, as is the case with back orders, not too distant future.

Okay, here are media examples of back order:

1. I graduated with a degree in aerospace engineering the same year the Boeing 737 design rolled out. For my senior year, two-person teams had to “design” a light aircraft, as a two-semester project. This was on top of all of our other courses. A course in aircraft stability and control was taught in my junior year.

We were also taught to take an older design and “tweak it” rather than start entirely from scratch. This lessened the engineering and design time.

The bottom line, however, is that the aircraft must be stable in the sense that if the pilot takes his hands off the stick, the aircraft will not oscillate further around the horizontal pitch axis. It will “dampen.”

Certainly, Boeing has used this principle in every aircraft it has built, starting slightly over a hundred years ago.

Yet when the latest redesign of the 737 — now called the 737 Max — was finalized a few years ago, this tenet was no longer the case, since the larger fan jet engines had to be mounted differently to the wings to accommodate the larger diameter nacelle, which could interfere with the ground. This made the aircraft technically “unstable.”

Procedures for the pilots to compensate for this rare case of instability were developed. But this fact seems not to have been adequately communicated to the airlines or to the pilot or to the Federal regulators.