4 ms·It's been 11 years and they are still barely flying a not-full-size prototype.by sjburt 9y agoIt's been 11 years and they are still barely flying a not-full-size prototype.drewm1980 9y agoThat is not a long time for something like this.drewm1980 9y agoThat is not a long time for something like this.