Heli-Team.pl

Q 24: How can I set fail safe values like I do on my planes
A: Unlike aircraft that are self-stable, RC heli are inherently unstable.
Therefore, levelling the swashplate during a Fail Safe does not in any way straighten the model.
A Fail Safe that changes control surface positions can be useful in RC Aircraft.
It could cause major problems in RC heli and become dangerous:
If Fail Safe were momentary, it would cause changes in direction and unwanted jolting of the model.
(this is also the main reason why we do not automatically activate the Auto Level function in case of Fail Safe)
Unlike aircrafts, RC Helis also have a sustenance pitch control, and if the model were in reverse flight (in addition to normal reverse flight, for example, during looping or tonneaux), moving the pitch from negative to positive would cause the model to crash faster and much more violently with more energy and resulting damage.
If the RC heli is doing a hurricane in front of the pilot, changing the pitch from negative to positive or the aileron and elevator controls would cause the hurricane to go out of the hurricane’s circle with the possibility that the model without more control will go against the pilot or spectators.
Etc. etc.
There is countless flight situations of an RC heli where the change of position of the swashplate would cause the exit from its current trajectory with consequent risks to the safety of the pilot, spectators and things.
The only thing that reduces the risks, energy and violence of an impact is to remove kinetic energy from the rotors and bring the throttle to zero.
According to all this, Brain controllers have always kept the last valid command received (hold) without modifying it and remove the throttle when used on heli RC in case of Fail Safe.
Note to OpenTX users: The “No Signal” setting of Fail Safe does not actually remove the output signal from the receivers as you might think from the name, but rather takes all commands to -115% and then activates the Fail Safe flag. So never use this Fail Safe setting with OpenTX but use the “Holds” setting. Always check what happens to the swashplate by turning off the transmitter. The swashplate must not move.

mwx pisze:Z Rikiem tak właśnie się rozmawia.

mwx pisze:Zanim ogarnie że rozmówca wie o co chodzi i może wnieść coś sensownego to będzie go spławiał, odsyłał do fakju i nie będzie zbyt uważnie czytał co mu się pisze. Trochę przeszkadza też bariera językowa - polecam mu rozrysować o co biega.

mwx pisze:Mam kilka teorii dlaczego tak jest, pewnie wymyślisz podobne, nie będę nudził. Ale jedna z nich opiera się na założeniu że to lekkie niedopatrzenie ze strony MSH, więc będę wdzięczny jak nie podzielisz się z Rikiem moimi obserwacjami, bo mi popsuje apdejtem. Już w ostatnim coś tam grzebali w sprawie odbiorników połączonych w M/S...

mwx pisze:Dlaczego B1 nie odczytuje z S.Busa informacji o pogubionych ramkach? Tego nie wiem. Rozwój B1 zakończył się już dawno, może zanim zmienili zdanie na temat działania F/S i tak już zostało