@@kingsbishop1479 No, but maybe yes... ;-) This is of the prototype V1, so all up weight was 170lb (77kg). Though, I'm designing the V2 prototype to have a similar battery to flight time ratio but at an all up weight of 300lb (136kg). That is with a 200lb(90kg) payload. This just shows the efficiency improvements I'm shooting for.
I'm not exactly sure how they compare on efficiency, but the real reason is the "C" rating or how fast they can be discharged. Li-ion have a low c-rating while the Lipos I'm using have 120c (120x their capacity meaning I can discharge the whole pack at over 4000A if I need to) To get a Li-Ion pack that could handle the needed current draw would require a heavier battery in the end. Not saying that we won't go that way eventually, but for now it doesn't work for us.
@@kingsbishop1479 We are actually using 12. I don't have a good answer for you. In general what determines efficiency is the total disk area. Area of one disk or sum of areas of 12 disks it should just be the total area. But things like blade design definitely play a factor. Lots to learn here still. Do you have any resources you could share along these lines?
looking good
Great
Thanks for the heart, I absolutely love your jetpack! Can you guide me on how I can create one as well? Any efforts would be appreciated :)
@@exhilex It's not easy, but it is basically drone technology. Find some local RC/drone guys. They will be able to guide you better than me.
@@AscendDynamics thanks for the advice, I will surely try
So what is the battery weight to flight time ratio.
Hm... Haven't thought about that... I guess about 12.5lb/min Haha.
@@AscendDynamics and is it payload weight of 130 kg for it to be 12.5lb/min.
@@kingsbishop1479 No, but maybe yes... ;-) This is of the prototype V1, so all up weight was 170lb (77kg). Though, I'm designing the V2 prototype to have a similar battery to flight time ratio but at an all up weight of 300lb (136kg). That is with a 200lb(90kg) payload. This just shows the efficiency improvements I'm shooting for.
@@AscendDynamics so its around 12.5Ib/min with 90 kg payload.
@@kingsbishop1479 For the next prototype that is what I'm hopping for. Which is almost double the efficiency of V1.
How come you use Lithium polyster batteries instead of lithium ion batteries i thought lithium ion had the most battery efficiency.
I'm not exactly sure how they compare on efficiency, but the real reason is the "C" rating or how fast they can be discharged. Li-ion have a low c-rating while the Lipos I'm using have 120c (120x their capacity meaning I can discharge the whole pack at over 4000A if I need to) To get a Li-Ion pack that could handle the needed current draw would require a heavier battery in the end. Not saying that we won't go that way eventually, but for now it doesn't work for us.
@@AscendDynamics but how much efficiency are you losing using 6 rotors instead of 1
@@kingsbishop1479 We are actually using 12. I don't have a good answer for you. In general what determines efficiency is the total disk area. Area of one disk or sum of areas of 12 disks it should just be the total area. But things like blade design definitely play a factor. Lots to learn here still. Do you have any resources you could share along these lines?
hi