Plane: Disarm after parachute release

[python36]

Based on discussion of PR #25562.

Disarm after parachute release to avoid parachute tangling.

[python36]

@IamPete1 @khancyr please review this PR. If there are concerns, I can replace this with parametric functionality (CHUTE_THR_DISARM).

[timtuxworth]

Just a thought - would it be better to do an emergency stop on the motors rather than a disarm?

[python36]

@timtuxworth It doesn't matter to me how to do it. I want to avoid getting the parachute tangled. Now I’m solving it with custom firmware, which is not very good.

[python36]

Hi. Maybe make a new bit in CHUTE_OPTIONS?
1 - disarme after releasing the parachute.

Please don't ignore me :) this is very important for me

[tridge]

@python36 I think we could consider moving the disarm into the AP_Parachute library so it is common code instead of being in each vehicle, and maybe add a CHUTE_OPTIONS bit to optionally disable the disarm?

[rmackay9]

I'd even be happy without the option.. I think the vehicle should always disarm, the only question may be whether it should keep logging or not.. but I think we have an option for that already.

[python36]

@tridge @rmackay9 thanks for the reply. I will create a new PR and then close this one. thank you

[python36]

Create new PR #26129 taking into account previous wishes.