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Results tagged with engine
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user 42636
For general questions related to aircraft engines; use a more specific tag, such as [jet-engine] or [piston-engine], if possible.
1
vote
Is it possible to identify plane engines by sound alone?
The exhaust "purr" of a piston engine is easy to tell apart from the high pitch whine of a turbine engine, which also has a distinct exhaust "swoosh" similar to that of a high bypass jet engine. … Determining the engine would then be a matter of looking up what engine is run in which airframe. …
- 30.5k
0
votes
Why do pilots move the propeller lever full forward before landing?
Therefore if a go around is initiated, the engine will give its best performance. … If the propeller lever was set at a lower rpm, the full power of the engine could not be utilized, as power is simply torque x rpm. …
- 30.5k
3
votes
Accepted
How aircraft manufacturer decide where to mount the engines on the wing?
This mitigates control problems in engine out situations and keeps the wing structure as light as possible: if engines were far from the centerline, the structure of the wing would need to be stronger … and thus heavier, and should either/one of the engines fail, the running engine(s) would impose a strong yaw force on the aircraft. …
- 30.5k
6
votes
Where is the GA community at regarding fuel/engine types?
One more take on the subject: for the safety of you and others, I suggest you start your flying hobby with the most cost efficient (read: cheapest safe) setup, and fly, fly & fly. Every dollar you sav …
- 30.5k
3
votes
Can liquid hydrogen be pumped directly into a jet engine without a heat exchanger? Is it bur...
Hydrogen has to be in gaseous state to burn. The boiling point of hydrogen is ~20 kelvins, while oxygen boils at about 90 kelvins and freezes to solid at ~54 kelvins. It is therefore impossible to mix …
- 30.5k
4
votes
Accepted
Why is the fuel:air ratio of a turbojet engine not around ~1:15 (the stoichiometric ratio)?
In it's original form, the Q presented jet engine f/a ratio as 1/4 - 1/3 and compared it to the stoich ratio of 1/15. … /air ratio (f/a) which is the ratio of the mass of fuel to the mass of air being burned in the engine. …
- 30.5k
27
votes
Why do new engines have a case with a triangular tiling pattern?
This is simply a way to achieve required rigidity/strength and vibration dampening with less material than in a solid, even thickness design.
Varying the weave pattern gives a relatively easy and a v …
- 3
2
votes
Can you fly 2000 miles on an engine that costs less than $500k? If so, what type of engine?
You could even feather the props and shut down the engine -> no cruise consumption (piston engines typically are not very efficient when operating in partial load = cruise). …
- 30.5k
3
votes
Why is the inlet cone shaped conical?
The engine in the first picture is not of a supersonic aircraft. … It still stands as one of, if not the most inspirational jet engine. …
- 30.5k