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/sci/ - Science & Math

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12090013 No.12090013 [Reply] [Original]

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?

>> No.12090014

the 2nd option

>> No.12090022

>>12090014

Okay. So they can never descend faster than gravity?

>> No.12090058

>>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

>> No.12090063

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

>> No.12090066

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

>> No.12090226

>>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

>> No.12091588
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12091588

>>12090014
wrong