12 Biden "green screen" not actually a green screen. (imgur.com) posted 3 years ago by everbe 3 years ago by everbe +16 / -4 14 comments share 14 comments share save hide report block hide replies
In some turbine engines there is a “clutch” brake so you can have the engine running without the rotor turning, or is possible it is the APU (auxiliary power unit).
Your other points are perceptive though.
Easter eggs......laughed pretty good with that. Thanks
That model helicopter has two engines. It can run one engine to power electrical, and other stuff without engaging the blades.