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- Dec 29, 2016
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No, the p4p is plenty stable, I'm just curious. I know the Inspire 1 is supposed to be stable, but when I went to a festival someone had a inspire 1 there. From what I could see, it drifts much more then I figured.The P4P is going to be more stable in stronger winds since it's a larger aircraft. If you want something more stable than a Phantom, then you'll want to step up to the Inspire.
Yes that's true. The person with the I1 must not have calibrated it or something. It was drifting quite a bit!Aircraft can drift for many reasons. As far as wind goes though, it's going to have more of an effect on lighter aircraft.
They are both quite capable of resisting wind.
Flying downwind and up high with a strong wind is one of the most common causes of incidents that inexperienced owners call flyaways.Anecdotally I hear of alot of Mavics being literally 'blown away', or at least running out of battery when returning home into a headwind. I wonder if this is because of pilot / beginner error, or Phantoms are more resistant to this?
Flying downwind and up high with a strong wind is one of the most common causes of incidents that inexperienced owners call flyaways.
It doesn't matter what drone you fly, if the wind is too strong to fight, you go home without your drone.
Yeah, that always scares me. Sometimes when I go up to 100-200 feet when there's 10-15 mph winds, my phantom warns me of wind and I'm pretty sure the winds get MUCH stronger the higher you go.Flying downwind and up high with a strong wind is one of the most common causes of incidents that inexperienced owners call flyaways.
It doesn't matter what drone you fly, if the wind is too strong to fight, you go home without your drone.
Anecdotally I hear of alot of Mavics being literally 'blown away', or at least running out of battery when returning home into a headwind. I wonder if this is because of pilot / beginner error, or Phantoms are more resistant to this?
I don't agree much with the notion that the P4P is more stable because it is heavier. It also has a lot more surface area that the wind can push around. (Plus the legs and camera dangling underneath)
The MP has this nice dense packaging to it. 750 g in a small volume.
I'll get my MP back tomorrow - I hope. Another windy day and I'll hover both side by side and film them - 360° heading rotations to compare.
Here's a comparison that estimates the MP may have a slightly higher P/W ratio. In any case they are very close.
View attachment 80773
Max hover minutes for the P4P is based on the MP's 24 minute hover v 27 max endurance times the 30 minute max endurance for the P4P.
I don't disagree with what you say. That said, given that it's the same engineers, the same control loops (with different weighting/time constants), same IMU and baro (I assume), etc. the thing that stands out is reserve power to do something about an upset and the sail area of the drone in question. The P4P is massive in sail area to power compared to the MP. (IMO; I don't have a simple clear way of measuring their cross sections (via photograph perhaps?)).
The MP has a head on X-section (in hover) that is tiny. The camera is "in the nose" and not hanging down. The landing gear is two little stubs (not worth mentioning the tail gear). In cruise (or hover in a stiff headwind), however, the head on drag area of the MP increases a lot as the nose pitches down. This seems less so, to me, than for the P4P - though still present. The "down lift" in forward flight would seem to me greater for the MP than the P4P resulting in less power margin.
A couple months ago in the MP group we discovered a funny thing about the MP. Because it's designed to fold, the engineers made some compromises on rotor plane angles. Such that the difference between fore and aft rotor planes is a whopping 10.2°. This results, in a stable, no wind hover, in the front rotors working 61% more than the rear (without accounting for the slight nose-heaviness of the MP). So the MP may be headroom limited due to that. (How those angles play in forward flight is harder to say...).
Reasonable assumptions. The only thing I would add to that is mass - since that determines acceleration given the force imbalance from the wind drag.
Yeah, I do see your point. Although, out of countless videos and reviews I've seen on comparisons on both drones, the majority of the reviews stated the p4ps can hold gusts much better. I mean, logically they can, because of the stronger motors. Although, I have to hand it to the mavic when it's close to the ground on stability. All phantoms have a tendacy to throw themselves when close to the ground.Yep I forgot my father's standard: "F=ma but you can't push on a rope."
Yeah, I do see your point. Although, out of countless videos and reviews I've seen on comparisons on both drones, the majority of the reviews stated the p4ps can hold gusts much better. I mean, logically they can, because of the stronger motors. Although, I have to hand it to the mavic when it's close to the ground on stability. All phantoms have a tendacy to throw themselves when close to the ground.