/sci/ - Science & Math » Thread #12090013

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Anonymous Sun 06 Sep 02:53:44 2020 No.12090013 View Reply Original Report

Quoted By: >>12090058

brainlet here, how do helicopters descend? Can they descend faster than gravity? Or do they simply slow their rotations to allow the helicopter to fall?

Anonymous

Anonymous Sun 06 Sep 2020 02:54:57 No.12090014 Report

Quoted By: >>12090022 >>12091588

the 2nd option

Anonymous

Anonymous Sun 06 Sep 2020 02:57:47 No.12090022 Report

Quoted By: >>12090063 >>12090066

>>12090014

Okay. So they can never descend faster than gravity?

Anonymous

Anonymous Sun 06 Sep 2020 03:13:46 No.12090058 Report

Quoted By:

>>12090013
The pitch on the blades adjusts to descend or ascend.
To travel forward the blade pitch will dip in a pulse with every rotation to tip the whole machine forward

Anonymous

Anonymous Sun 06 Sep 2020 03:15:09 No.12090063 Report

Quoted By:

>>12090022
yes if the pitch on the rotor blades goes negative

Anonymous

Anonymous Sun 06 Sep 2020 03:15:53 No.12090066 Report

Quoted By: >>12090226

>>12090022
if you flipped the whole helicopter upside down then sure they could

Anonymous

Anonymous Sun 06 Sep 2020 04:28:58 No.12090226 Report

Quoted By:

>>12090066

This is true, but having a positive collective while upside down is the same as having a negative pitch collective while the right way up

So yes, they can without flipping upside down

Also remind me to never get in a helicopter with you

Anonymous

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Anonymous Sun 06 Sep 2020 15:06:59 No.12091588 Report

Quoted By:

>>12090014
wrong

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