This is no hoax. Victor uses a flight controller of his own design running a modified version of AQv6 firmware. Dropping spent batteries is of course what makes this demo possible. However, getting long flight times without ditching is possible. I have a hex able to perform 45 minute long missions with standard LiPos. I am building a custom battery pack using NCR18650A's which, based on bench tests, should extend this to 1Hr, 20mins. The key is to use ultra efficient prop / motor combinations. You want large, slow turning props attached to motors with low Kv.
Radial motor with good efficiency with that propeller.
Big quantity of amp 2.4 of battery 11 amp of battery.
So to doing more of two hour the tricks could be the drop of exaust battery. If you keep attention in the video after a while release battery .
Could be nice doing an excel with some valuation. So i study the problem one years ago and i found that is very important to optimize the time of flight use a motor and propeller that work in the best condtion for the motor .
I'll step in as a mighty skeptic and say this IS a hoax. If I'm not mistaken, there currently is no technology whereby such a long flight may be made possible (at least not for rotorcraft of this size). This includes liquid fuel as well as battery power. I imagine if this was actually possible, we'd all be having some pretty impressive flights (25 minutes or more, at the very least you'd think).
Comments
Don't know what he's using, but I've been using RCTimer 5010 360Kv motors with RCTimer 15x5.5" CF props with a minimum of 4S.
Everybody knows that you need big prop's and low Kv motors. The question is what combination is being used here.
Is there some reason why you won't answer such a simple question?
Yes it's the secret of long time of flight.
efficient prop/motors combination ... and drop battery.
Best
Roberto
This is no hoax. Victor uses a flight controller of his own design running a modified version of AQv6 firmware. Dropping spent batteries is of course what makes this demo possible. However, getting long flight times without ditching is possible. I have a hex able to perform 45 minute long missions with standard LiPos. I am building a custom battery pack using NCR18650A's which, based on bench tests, should extend this to 1Hr, 20mins. The key is to use ultra efficient prop / motor combinations. You want large, slow turning props attached to motors with low Kv.
he drop spent batteries, thats the reason of this ultra long flight
Robero, do you know what propeller and motor they are using?
So the tips and tricks are :
Big propeller
Radial motor with good efficiency with that propeller.
Big quantity of amp 2.4 of battery 11 amp of battery.
So to doing more of two hour the tricks could be the drop of exaust battery. If you keep attention in the video after a while release battery .
Could be nice doing an excel with some valuation. So i study the problem one years ago and i found that is very important to optimize the time of flight use a motor and propeller that work in the best condtion for the motor .
best
Roberto
Winner last year All Out Time Duration 65min:29sec
http://www.rcgroups.com/forums/showthread.php?t=1567716
I think you can win this year ;)
I'll step in as a mighty skeptic and say this IS a hoax. If I'm not mistaken, there currently is no technology whereby such a long flight may be made possible (at least not for rotorcraft of this size). This includes liquid fuel as well as battery power. I imagine if this was actually possible, we'd all be having some pretty impressive flights (25 minutes or more, at the very least you'd think).
I'll be happy to be proven wrong, though!
-
1
-
2
-
3
-
4
-
5
of 5 Next