heliVoY
Veteran
Location: NJ
| Well,
today was awesome !! (besides the 25mph+ wind gusting) The bell230 flew flawlesly !! The blades were cool to the tutch, and the bottom of the fuselage was not even the slightest bit warm even though the pipe glowed RED HOT on startup (this is because the exhaust gets deflected almost 90 degreez upwards 1/2' behind the turbine exhaust .. At almost 40 LBS, i can say the bell230 flies a lot diferently than the Jetcopter SX I was used to ! had to be on the sticks constantly, but it was no problem ... The 230 is very fast in forward flight, and just wants to keep moving, it has some very noticeable momentum !! makes my 3d glo helicopters almost feel like feathers ..
I only had one problem (kind of) today ... I had the head running at 1400 RPM (96000 on turbine) with no load on the ground, as i punched in full pitch on the head for a steep climbout, i heard the HP5 load up, and probably dropped down to around 75000rpm on the turbine from load alone. Shortyl after, the turbine dropped to a lower RPM and stayed there for a while, before regaining its set 96000 again ... WHat i think happened is that after loading the turbine up, the ECU tried to compensate for the RPM drop, and kept dumping more and more fuel in, trying to force the turbine to ramp back up to the 96000 the throtle was set to (HP5 runs on a set throttle position with no throttle curve) ... My max tem durring the overload reached 970c !!!! now i know that there is a limit to the available power from the turbine, as i never realized this on the lighter Jetcopter, which was mildly aerobatic ....
Anyway, im off to bed for now, but in the morning, i will convert the video to MPEG, and post it on my server (i will post the link here) I have at least 5 min of good footage ....
Wojtek |
i will post the video in a few minutes, and you will see what happened ... I went from 0 to 12 degrees pitch in less than a second and thats on a 35+ pound helicopter .. you can actually hear the turbine loading up, and soon after you can hear and see the helicopter drop in rpm ... the software does not shut down in an overtemp, but kind of goes into a failsafe type setting .. it was enough for me to land safely. as i set the heli down, the turbine spooled back up to its peak rpm .. i shut down at that point and checked everything out ...all was ok, and the bottom pf my fuselage shockingly was still cold to the toutch !! and there is only a 1" clearence between the fuse and the bottom of the pipe ... I learned a good lesone here, the power is not unlimited in the HP5 (as the jetcopter had me thinking ) ..... over all i am VERY happy with how the software handled my abusive controll inputs 
.... Im also thankfull for Optikaman always being there to tell me "slow down" "dont do that" or "take it easy" 
