normal vs high altitude props?

[PatrickP]

Anyone have experience with the high altitude props? Do they reduce battery life or possibly extend it if lighter? are they a different material? Would love to hear some thoughts, Thanks!

 

[AeroMirage]

As I understand it, they have more pitch to create more airflow in thinner atmosphere.
So, if that is true, they would create more resistance in lower atmospheres and thus use more power.
Probably reducing flight time.
I have never used them but have read about them on the DJI forum.

 

[PatrickP]

As I understand it, they have more pitch to create more airflow in thinner atmosphere.
So, if that is true, they would create more resistance in lower atmospheres and thus use more power.
Probably reducing flight time.
I have never used them but have read about them on the DJI forum.

Thanks, i do most of my flying at about 5300ft wondering if it would be a good idea...

 

[dgreen729]

Using high altitude props at 5,000ft will give you the same performance characteristics of regular (sea level) props at, say, 200ft.

They create more resistance but that means a reduction in motor speed. For each 1,000ft above sea level I think (remembering from a hungover lecture about 8 years ago) you lose around 2-3% in performance/thrust for a given RPM and prop. So you're operating at around 85-90% compared to if you flew at sea level.

That being the case you should see a slight increase in flight times though I imagine it will be very small.

Definitely worth getting a set.

Sent from my LG-H815 using InspirePilots mobile app

 

[PatrickP]

Using high altitude props at 5,000ft will give you the same performance characteristics of regular (sea level) props at, say, 200ft.

They create more resistance but that means a reduction in motor speed. For each 1,000ft above sea level I think (remembering from a hungover lecture about 8 years ago) you lose around 2-3% in performance/thrust for a given RPM and prop. So you're operating at around 85-90% compared to if you flew at sea level.

That being the case you should see a slight increase in flight times though I imagine it will be very small.

Definitely worth getting a set.

Sent from my LG-H815 using InspirePilots mobile app

thanks for the detail, ill pick up a couple pairs!

 

[Donnie Frank]

Thanks, i do most of my flying at about 5300ft wondering if it would be a good idea...

Wonder no more, my friend.

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[Luff84]

Thanks, i do most of my flying at about 5300ft wondering if it would be a good idea...

Where are you allowed to fly at 5300ft?

 

[droneseyeview]

Where are you allowed to fly at 5300ft?

Above sea level... many places in the US are thousands of feet above sea level- Colorado for example.

 

[Luff84]

Above sea level... many places in the US are thousands of feet above sea level- Colorado for example.

Thanks for the clarity, i had visions of a hacked drone flying past airliners!!

 

[Fidel Gonzales]

Thank you for your comparison. Very helpful


Sent from my iPad using InspirePilots

 

[Donnie Frank]

Where are you allowed to fly at 5300ft?

Denver. Albuquerque. Or any other city that resides @ 5200' MSL.

 

[Ftolino]

Decrease in fly time . Different pitch will give you better lift but use more power to do so . Sane as the 1360's for the inspire 1

 

[vyoufinder]

I fly regular props all the time at about 5000'. At about 7-9k is where you begin to notice a difference. Above 10k, you almost need them or fly very carefully.