Questions tagged [battery]

A device that harnesses a controlled chemical reaction to produce electricity; usually carried as an emergency power source in case the aircraft's main generators fail.

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4
votes
2answers
230 views

If, one day, we have an electric airplane, will it be easier to control than a fuelled airplane?

Elon Musk said that Tesla will make battery which can last for million miles. So probably in the next few years there will be a (small) airplane powered by an electric motor rather than by fuel. If ...
0
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1answer
102 views

What do I need to power up an EDF engine? [closed]

I want to buy a EDF engine (just the engine). What items, such as battery and chargers etc. do i need to buy to power it up?
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2answers
358 views

Is it possible to power a very small jet using batteries? [duplicate]

I have read a lot of answers on batteries powering large commercial jets, and how it won't work. However, for a small jet like the Honda jet, would it be possible for it to be powered completely by ...
0
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3answers
156 views

Are piezoelectric energy harvesters too expensive to be used commercially as a power source in drones or small aircraft?

Piezoelectric energy harvesters can draw energy from the mechanical loads and the vibrations in the fuselage/wings/blades of aircraft. What are the disadvantages of such a system being used as an ...
0
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0answers
31 views

Will two blades or three blades last longer on a hobby drone? [duplicate]

Will it be better to run a lighter 2 blade prop vs a heavier 3 blade prop for longevity and battery life? they are the same length. I am curious if the extra weight of the third blade will inhibit the ...
44
votes
6answers
9k views

Is a weak battery a valid reason to reject a rented aircraft?

Today I had rented a Piper Archer III for a local flight. After taxing to the fuel and filling up, I went to start the plane again and it did not want to turn over. This particular plane is somewhat ...
8
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2answers
3k views

What is the typical voltage used on jet airliners?

I have seen several parts that use 28 Volts DC, is this a standard for jet airliners (e.g., Airbuses and Boeings).
5
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2answers
413 views

How are batteries cooled in passenger aircraft?

What sort of systems are used to cool batteries in the air? Liquid cooled? Air cooled? I am interested in lithium chemistry batteries in the form of either pouch cells or 18650 batteries inside of ...
2
votes
0answers
62 views

What kind of batteries are allowed to be transported? [closed]

I am based out of India and I have to send two mobile phones along with batteries to Japan. I thought of sending it by DHL. This link gives information about regulations regarding the batteries. ...
2
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2answers
677 views

How is a lead acid battery and a Ni-Cd battery charged on an aircraft?

How is a lead acid battery and a Ni-Cd battery charged on an aircraft, such as an A320? Is it constant current or voltage?
12
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3answers
2k views

What's the point of separating the Alternator and Battery switches?

What's the point of having a different button for the battery? Why does the alternator turn on simultaneously with the battery? I need an easy and short explanation, if possible.
8
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4answers
3k views

Is it safe to fly on airplane with lithium batteries in cargo hold?

Lithium-ion batteries have the tendency to go on fire. I checked baggage policy of European low cost carriers (easyJet, Ryanair, WizzAir), and while spare batteries are banned from cargo hold, it ...