Scorching hot rotors !

[jojonono]

hello

well here in dubai its as hot at 46c last friday and 37c this morning before Noon,

i was flying my air 3s few days ago in a huge shaded warehouse, not sure how hot it was maybe 32-35c in complete shade !

i did a couple of drone flights in the warehouse on slowest settings mostly obviously since its indoors !

after just 15 minutes tops i landed the drone, the bottom was hot coz i hand landed, but the rear motors were very hot in the 40~c ! while front motors were indeed hot but not like in the back,

latter on we went to the desert jsut under the sun probably in the 40~c. i noticed drone (ever since i bought) in sport mode never achieved that claimed 96c, and in that freekin desert drone couldnt fly faster 30c,

my friend suggested something is wrong with the drone but i think its mostly the hot weather i dunno !

today morning it was 37c way before noon, i flew it for max 30c but weather was cloudy mostly yet when i landed i was shocked to find rear or front rotors (cant remember) we iron hot id say in 50s~ or even 60s C
is all this normal in such a ****** weather here in the UAE or should i send it to warranty ??...

i didnt see any errors in the dji app !

thanks,

 

[Felix le Chat]

Straight out of the specs page of the Air 3S manual...

• Operating Temperature​

• -10° to 40° C (14° to 104° F)

Because it's dark plastic, the body will absorb external heat, which gets added to by the internal heat generated by the battery and electronics.... 36° in the sun (or the shade) plus 10° above ambient generated by the drone and you're trying to fly with an equivalent temperature of 46° or higher.

 

[DougMcC]

Almost all aviation specs assume sea level and ambient air temp of about 19 C. The efficiency of the propellers decline as the temperature climbs. You are operating at a very high density altitude with a fixed pitch propellers. Your system is operating in a challenging environment at a high density. Your motors will be running at very high RPM compared to a “normal “ day of 19 C

 

[jojonono]

Straight out of the specs page of the Air 3S manual...

• Operating Temperature​

• -10° to 40° C (14° to 104° F)

Because it's dark plastic, the body will absorb external heat, which gets added to by the internal heat generated by the battery and electronics.... 36° in the sun (or the shade) plus 10° above ambient generated by the drone and you're trying to fly with an equivalent temperature of 46° or higher.

Am not sure this formula u provided (adding 10c ur own) applies to what dji describes as operating temperature, should this mean i can fly the drone in temps of 40c period ? I dont wanna damage my drone anyways from now on so ill play it safe....

 

[jojonono]

Almost all aviation specs assume sea level and ambient air temp of about 19 C. The efficiency of the propellers decline as the temperature climbs. You are operating at a very high density altitude with a fixed pitch propellers. Your system is operating in a challenging environment at a high density. Your motors will be running at very high RPM compared to a “normal “ day of 19 C

So I cant reach speeds of 90 kmph simply because am flying the drone in hot weather ?

Pretty soon we will have a a periodic shoot in noon but with a m3pro, does the m3pro or m4pro tolerate higher temps or are they all the same ?

For the next 3 months unfortunately in the uae its gonna be really hot

 

[Felix le Chat]

Am not sure this formula u provided (adding 10c ur own) applies to what dji describes as operating temperature, should this mean i can fly the drone in temps of 40c period ? I dont wanna damage my drone anyways from now on so ill play it safe....

Experience. I've seen one of my batteries register an internal temperature well in excess of 20°c just after landing... so saying +10°c above ambient was very conservative.

Where you are you don't have much choice: you have to fly in temperatures higher than 40°c, just realize that there's both an external heat source (sun) as well as an internal heat source (battery & electronics) and unless you move to Alaska: they're not going to cancel each other out.

 

[jojonono]

Experience. I've seen one of my batteries register an internal temperature well in excess of 20°c just after landing... so saying +10°c above ambient was very conservative.

Where you are you don't have much choice: you have to fly in temperatures higher than 40°c, just realize that there's both an external heat source (sun) as well as an internal heat source (battery & electronics) and unless you move to Alaska: they're not going to cancel each other out.

so the temps here are the limiting factor for the air 3s to not reach 96 kmph speed ? is something like m4pro gonna be more reliable in our weather ?

thanks a lot,