Aircraft Building

1. Regular maintenance can be fitted into periods of low production and usually takes only an hour or so to complete.

2. Too often maintenance schedules break down because managements do not cooperate in allowing equipment to be out of operation for maintenance during working hours.

3. The rocket engine does not use atmospheric air as the propulsive fluid stream.

4. There is a constant relationship between the volume, the temperature, and the pressure of the air as it passes through the axial compressor.

5. As the range of functions performed by the digital avionic systems has widened, the reliability of the systems has improved and significant advances have been achieved in the methods of detecting and identifying faults.

6. As part of this program, a wind shear training aid was developed by the Boeing Commercial Airplane Group consultation with international organizations concerned, including ICAO.

7. Both monocoque and semi-monocoque are referred to as "stressed skin" structures as all or a portion of the external load (i.e. from wings and empennage, and from discrete masses such as the engine) is taken by the surface covering.

8. Because o f the complications in scheduling flights and maintaining profitability, airlines have many loopholes that can be used by the knowledgeable traveler.

9. There have been efforts to develop propellers for aircraft at high subsonic speeds. The 'fix' is similar to tha t of transonic wing design.

10. Since this is nearly the same as the velocity of the gas entering the impeller tip from the nozzle guide vanes, an "impact" between the hot gas and the turbine impeller is avoided

11. Thin blade sections are used and the blades are swept back in a scimitar shape (Scimitar propeller); a large number of blades are used to reduce work per blade and so circulation strength; contra-rotation is used.

12. One needs to adjust to the pressurized cabin air from the beginning. 1 in 3 passengers suffer ear discomfort, pain and temporary hearing loss on takeoff or landing, called "aerotitus" by the House Ear Institute in Los Angeles.

13. The burning process in the combustor is significantly different from that in a piston engine.

14. Since they are less efficient than combined cycle plants, they are usually used as peaking power plants, which operate anywhere from several hours per day to a couple dozen hours per year, depending on the electricity demand and the generating capacity of the region.

Дата добавления: 2015-11-14