XKCD on autgyros

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XKCD on autgyros

Joined: May 25th, 2012, 4:07 pm

March 26th, 2018, 5:50 pm #1

https://xkcd.com/1972/


Not anything new, but will probably generate a spike of interest in them.
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gvgoebel
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gvgoebel
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Joined: May 19th, 2012, 1:33 pm

March 27th, 2018, 3:00 am #2

Nothing like a helicopter?   Heavens, they were the first practical step towards them.  

Hiya PL.   Still getting snowed on?   You may have noticed that, thanks to that syntax checker I found, my level of typo errors has fallen off.
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Joined: May 25th, 2012, 4:07 pm

March 28th, 2018, 4:30 am #3

gvgoebel wrote: Nothing like a helicopter?   Heavens, they were the first practical step towards them.  

Hiya PL.   Still getting snowed on?   You may have noticed that, thanks to that syntax checker I found, my level of typo errors has fallen off.
"Nothing like a helicopter" from the pilot's perspective, not from the aerodynamicist, or indeed the aviation historian. An autogyro is about the easiest thing to fly while a helicopter requires three hands.

For the weather, I'm far enough inland that I've avoided the Nor'easters.  March has been somewhat above average for snowfall but considerably above average for snow staying on the ground.  I've had a pet theory that snow persistence would be a useful thing to measure and this last month has convinced me of it.  I don't care about how many inches of snow fell from the sky... I care about how long the snow has been on the ground.  Call them inch-days of snow or something.  There are still significant patches now.

 
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gvgoebel
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gvgoebel
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Joined: May 19th, 2012, 1:33 pm

March 28th, 2018, 1:15 pm #4

The flexible hub system for helicopter rotors was developed for autogyros, and there's a trick where the engine can be coupled to the rotor to spin it up, to then get a jump takeoff by adjusting rotor blade pitch.   Of course, the fundamental difference between the two technologies is that the airflow normally goes DOWN through the rotor on a helicopter, and normally UP through an autogyro -- except, of course, when a helicopter is auto-rotating.   Which is something nobody normally wants to do.

Lingering dirty snow ... it's depressing.
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