Throttle cut

[Kehno]

En löytänyt oikeestaan aiheesta mitään edellistä säiettä, joten täräytän tähän.
Elikkäs nitroissahan tuota throttle cutia käytellään ja käsittääkseni yleensä siten, että throttle/lapakulma tikun tietyn asennon alapuolella se vasta toimii, jottei kone sammu vahingossa. Mä tässä rupesin vain miettimään, kun jossain vaiheessa (tod. näk. lähitulevaisuudessa) mokaan elyq:llä ja tarviin sammuttaa koneen jottei kaikki rojut hajoa torpissa. Nyt en pysty sammuttamaan kuin tikun ollessa jossain melko alhaisessa asennossa. Eikös tämä kopukan ollessa jotakuinkin oikein päin pakota minut tuomaan kopterit tonttiin melkolailla niin kovaa kuin vain romusta irtoaa? Mullahan Aurorassa on mahdollisuus tehdä throttle cut myös throttle hold tilassa ja mietinkin olisiko fiksumpaa käyttää sitten tuota?

Kysyisinkin oikeastaan puolesta ja vastaan kumpaakin tapaa, jos täällä nyt vielä heebot polttiksilla ajelee.

[mnentwig]

Hi,

throttle cut that works only with collective at bottom is "foolproof". Disable this "feature" unless you consider yourself a fool
It should work at any time. When something breaks, you'll want to turn it off in the air to avoid a chicken dance (I needed it the last time two weeks ago with a T-Rex 600 that became uncontrollable when the tail rotor slipped off the shaft)

[Kehno]

I'd like to think i am not a fool, maybe dumb but not a fool =)

Anyways, my point was if i can make throttle cut so that it works only in throttle hold mode, wouldn't that be pretty "foolproof" also?
Of course at the moment i'm having throttle cut working only in low collective stick, but i was wondering could this "throttle cut only in throttle hold" mode reduce the risk of hitting heli to ground high speed or is this just nonsense i'm saying. I like to think that say i have heli right way around piroing like crazy a full negative collective when turning off heli (to avoid chicken dance damage) would increase the damage high speeding ground will induce to it.

Of course if you guys think that using throttle cut as i described i trust you not my n00bish thoughts. Also, there hasn't been much discussion about throttle cut so i think this might be helpfull for other ppl.

[kaardian]

I have programmed in to my Futaba 12Z so that when I flip the throttle hold on, and then use the switch assigned into cut, it will shut down the engine. If I toggle the cut switch by mistake it doesn't shut down. Also I have assigned the cut function into such switch that is a "timer type" so it can be only pulled on, and if I release my finger it will return back to 0.

In 12Z this can be done by programming the logic. Not all radios are able to do this. For example I have programmed into HOLD condition CUT being operational and assigned it into specific switch with logic that will check the throttle hold switch too.

[mnentwig]

well I doubt you'll find any single "correct" solution.
Unfortunately, when sh*t hits f*n, it's pretty darn difficult to even flip a simple switch in time. Anything that requires additional thoughts is bad because things happen so quickly.
Anyway, it's just an opinion.

My recommendation, when the heli freaks out
- flip the switch when it becomes clear there won't be a happy end
- "fly the thing as far into the crash as possible" (Bob Hoover quote )
- lacking better options and close to the ground: both sticks to a corner to kill headspeed

[Kehno]

Kaardian's method was exactly what i meant. It is very easy to program with aurora and one could basically add that stick position also as security measure. For me it for some reason seems more safe when i don't need to set collective very low during sheit flying all over the place.

It's good to know that both ways are ok. It's just what you are used to i guess.

In aurora 9 you can actually program so many weird stuff, you have to every now and then ask if there is good practice already available.