3 ms·
These rc model turbines pull 20+ kg thrust. In the video he uses turbines noticeably larger, in 50-60kg class. Granted such small turbines have low efficiency -
by trhway 6y ago
These rc model turbines pull 20+ kg thrust. In the video he uses turbines noticeably larger, in 50-60kg class. Granted such small turbines have low efficiency - low compression - so they burn 0.2kg fuel per 10 kg thrust per minute. Thus 4kg per minute for 200kg total weight of which fuel is 60kg at best, thus 15 minutes hover at best.
Once it becomes more popular we'll get turbofans, and that will improve the efficiency.
- taneq 6y agoThat lines up pretty well with the demonstrated performance of these setups, I think they all have ~15min flying time. Can't wait for the turbofan versions! :D
- sizzle 6y agoHow heavy of a battery would you need to power these with enough electricity to lift an adult human, think like a drone on steroids...
- iso947 6y agoLift for how long? https://www.tmotoruavdrone.com/product-detail/4896820732330051.html https://www.tmotoruavdrone.com/product-detail/48968207323300... Looks like the motor you need. 25KW
- taneq 6y agoAnd you'd need four of those, I'd guess... so 100kW or so.
- trhway 6y agowith 57inch props - large beasts though so it would be a personal helicopter style suit (https://en.wikipedia.org/wiki/Martin_Jetpack https://en.wikipedia.org/wiki/Martin_Jetpack) not true jetpack - it makes 94kg thrust at 23kw, so 2 of them is enough with 60kg/7kwh battery making for 9 minutes of hover (though full discharge is truly bad for the batteries).