dismal battery life

[Kilrah]

It makes no sense that hovering takes more energie then traveling from one place to another.

Yet it does

 

[SkyeHigh]

It makes no sense that hovering takes more energie then traveling from one place to another.

It’s a natural assumption but it is actually true, hovering requires more energy than forward/backward/sideward motion.

While hovering, the downward force created by the propellers has to counteract the weight of the aircraft. Transitioning to flight gains additional lift from the increase in volume of air passing through the aircraft’s propellers.

 

[Audiorent]

Do you have proof off that statement, hoovering takes more energy?
Anny link?.
I found a test on YouTube, that proofs normal flying around, costs more energy than hoovering.
It is common sense.
The energy holding something at place, cost less energie then moving it around.
I can stand still a hole day long.
But running arround, less then 10 minutes.

 

[karlblessing]

I would probably say that hovering in zero wind likely takes less energy than flying in one direction at full speed.

Hovering in windy conditions however may take more energy as it continuously calculates its position (GPS and/or Visual Sensors on bottom) and compensates against the wind to hold that position.

 

[Audiorent]

Hoovering in place in windy conditions is (almost) the same as flying.
Thats not how Hoover Tests work.

 

[Kilrah]

I have seen videos in the past that replicated the conditions and airspeed quoted by DJI with the aircraft the specs were for and the higher draw in hover was correct, but I'd have no idea where since it was like 3-4 years ago.

 

[SkyeHigh]

Do you have proof off that statement, hoovering takes more energy?
Anny link?.
I found a test on YouTube, that proofs normal flying around, costs more energy than hoovering.
It is common sense.
The energy holding something at place, cost less energie then moving it around.
I can stand still a hole day long.
But running arround, less then 10 minutes.

If you wanted proof of a physical statement of fact YouTube would not be the place to turn too. And using yourself as an analogy is ridiculous and completely unrelated... unless, of course, you were flapping your arms fast enough to hover yourself clear of the ground.

Just do a simple Google search for ‘Transitional Lift’

 

[Audiorent]

And so I did. I read that the fonomane will starts around 16 to 24 knots, so you don't need to go in sportsmode. N will do.
A few day's ago i did the hoover test, it last 28 minutes.
As soon as the wind "will lay down" as we say in Holland, I do the test over flying around.
The best way to proof the theorie, is to compair it to the practice.

 

[SkyeHigh]

And so I did. I read that the fonomane will starts around 16 to 24 knots, so you don't need to go in sportsmode. N will do.
A few day's ago i did the hoover test, it last 28 minutes.
As soon as the wind "will lay down" as we say in Holland, I do the test over flying around.
The best way to proof the theorie, is to compair it to the practice.

There’s no need to test anything but by all means feel free to experiment. The physics of single and multi-rotor aircraft is fully understood and has been for longer than quadcopter ‘drones’ have been around.

If you’re interested in the physics governing this form of flight:

Helicopter Flight Physics

This chapter is dedicated to present the principles that constitute the fundamentals of helicopter flight physics, starting from the basics of the main rotor aerodynamics and of the component parts related to flight control. The chapter opens with a short history of helicopter development...

www.intechopen.com

Or in layman terms:

What is effective translational lift? - Helicopter Study Guide

Effective translational lift (ETL) is when the lift generation from the rotor disc is more efficient due to increased aircraft speed or wind.

www.thehelicopterstudyguide.com

 

[boblui]

And so I did. I read that the fonomane will starts around 16 to 24 knots, so you don't need to go in sportsmode. N will do.
A few day's ago i did the hoover test, it last 28 minutes.
As soon as the wind "will lay down" as we say in Holland, I do the test over flying around.
The best way to proof the theorie, is to compair it to the practice.

Your intuition is correct but only when the craft is flying at relatively high speed. This is from the user manual of Air 2 :

 

[Polyvista]

Brand new, Mini2, got battery bank (so 3 batteries in total)... I took it out today for the first time...
Did a few (less than 15' of flying and I had to bring it back for low battery.... then...
Did about 2.5 minutes of video (and maybe another 2 minutes of flying at the most) freshly charged battery at 100%) and the app was already indicating battery down to 63%. it doesn't seem this will last more than 12' ? (if that)... I'm not doing a whole bunch of crazy things, up and down and all that... just getting used to it.. a couple of quick shots but I can see the battery counting down like no other when flying ... is this normal ?? Tried other batteries ....pretty much the same...

I understand the fact this is a small drone and all that but from what I see there is NO way I'll get even close to the advertised flight time. Maybe 15' max and good luck getting it back home !!!

I'll need an 18 wheeler full of batteries right next to me to get any enjoyment out of this... So disappointing... I find myself paying more attention at the battery than the drone itself....

Cold weather affects the battery capacity!

 

[Audiorent]

When flying, the battery's are getting warm.

 

[karlblessing]

When flying, the battery's are getting warm.

That only helps to an extent. It's possible for the cold to get cold enough that the battery still can't give a proper amount of voltage despite the warning up as a result of discharge. Hence why there is an operational range of 32F to 104F, some of the higher end drones have their own dedicated battery warmers to handle colder.

Flying something well below its operating range too often will also damage the battery cells until they rupture.

 

[Audiorent]

I promest to do a fly time test, I may do a battery temperature test as well.
Hoovering for 28 minutes at 37°F maked the battery's get handwarm.

 

[SkyeHigh]

I promest to do a fly time test, I may do a battery temperature test as well.
Hoovering for 28 minutes at 37°F maked the battery's get handwarm.

Much of that warmth will have come from the aircraft itself, which helps... very slightly.

 

[Audiorent]

Is that importend where the warmth was comming from? Is the heat coming from the main board off the RC, you think? Can't be from the motors...
Anyway, the accu was so warm, it won't fast charge.

 

[DanMan32]

Hoovering in place in windy conditions is (almost) the same as flying.
Thats not how Hoover Tests work.

The hoover test, as mentioned in the old TV show Emergency! is to determine if someone is lying about being paralyzed in the leg.

The hover test is to examine how a copter behaves floating stationary in air.

Sorry but seeing the misspelling constantly was getting annoying.

 

[SkyeHigh]

Is that importend where the warmth was comming from? Is the heat coming from the main board off the RC, you think? Can't be from the motors...
Anyway, the accu was so warm, it won't fast charge.

The heat will largely come from the onboard electronics and battery. In very cold weather the aircraft electronics could be creating more heat than the battery. The motors are not creating any useable heat other than they are consuming considerable power, which will generate heat on the ESC’s, the main electronics boards and battery.

Nothing to do with the ‘RC’, which is the abbreviation we use for Remote Controller.

 

[Mavic 57]

The hoover test, as mentioned in the old TV show Emergency! is to determine if someone is lying about being paralyzed in the leg.

The hover test is to examine how a copter behaves floating stationary in air.

Sorry but seeing the misspelling constantly was getting annoying.

The guy lives in the Netherlands, can you speak Dutch. Be kind.

 

[Audiorent]

The heat will largely come from the onboard electronics and battery. In very cold weather the aircraft electronics could be creating more heat than the battery. The motors are not creating any useable heat other than they are consuming considerable power, which will generate heat on the ESC’s, the main electronics boards and battery.

Nothing to do with the ‘RC’, which is the abbreviation we use for Remote Controller.

It was getting late, Of course I ment "the drone" (UAS )