New answers tagged

4

You can guess what most of the tubing goes to if you know a few of the parts under the cowl and have a general understanding of how engines work. You can also get a good idea of what each part is by studying the parts catalog for the aircraft. You can view the Parts Manual for my Cherokee and an Arrow that I fly. Piper Arrow Six Cylinder Continental Let’s ...


0

On GA airplanes you will usually see black braided hose made to MIL-H-8794 (several thousand PSI burst pressure) used on anything that carries fluids under significant pressure (engine oil, fuel, brake lines, and coolant on an engine with liquid cooling). The most common is Aeroquip 303 and Stratoflex 111, which have a black braided cloth kind of outer ...


1

Air pipes are always going to be a lot larger diameter than everything else. But beyond that I don't know any general rules. Oil fuel and hydraulic lines can look pretty similar. If you narrow it down to one specific engine (e.g. a cfm56-7) someone might be able to give some heuristics. But just engines in general is pretty broad.


7

A performance increase after a compressor wash is expected to happen, but it does not return to the original performance as there are more degradation mechanisms at play. This answer explains that organic build-up causes a change in airfoil shape causing the recoverable performance degradation. Another source may be deposition of salts and dissolved ...


5

The compressor blades accumulate a coating of organic material from the atmosphere on the blades, which in the later stages, where the temperatures get above the material's flash point, may be mostly carbon from cooked organic material like pollen and bugs (the same sort of blackened accumulated crud you'll see on the butterfly of a late stage compressor ...


1

VFE is calculated for full flap extension, so the loads with just one notch of flaps are much smaller than the limit loads which determine VFE. It is very unlikely that this results in structural damage. Having said that, there is really no reason to exceed VFE with flaps down. There are two types of damage that could result from flying too fast with flaps ...


2

Unless a different speed is explicitly noted for partial flap extension, Vfe pertains to extending the flaps any amount. (For example, the C-172RG has a Vfe of 130 KIAS to 10º flaps, 100 KIAS beyond 10º flaps. Not so for the PA28s.)


28

No. It doesn't have an APU — it has two of them. They are located close to the main landing gears. From An-225 Mriya is the world’s largest aircraft (English version): Auxiliary power plant consisting of two TA-12 turbofans installed in the left and right chassis fairings provides independent power to all systems and starts the engines. I think "...


Top 50 recent answers are included