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Search: Posts Made By: Ascend Charlie
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Forum: Rotorheads
2nd Apr 2024, 07:17
Replies: 100
Views: 7,285
Posted By Ascend Charlie

Oh, Paco, you just opened the door to the "bubble...

Oh, Paco, you just opened the door to the "bubble of high pressure air under the disc" myth. Where's the popcorn...
Forum: Rotorheads
28th Mar 2024, 11:14
Replies: 100
Views: 7,285
Posted By Ascend Charlie

Megan, looks like a really old manual, maybe from...

Megan, looks like a really old manual, maybe from when Igor Sikorsky was an instructor on your course.

Note that it says "precession is not a dominant force", and adds that a rotor exhibits "some"...
Forum: Rotorheads
26th Mar 2024, 05:49
Replies: 100
Views: 7,285
Posted By Ascend Charlie

A helicopter is LIKE a hummingbird, it can hover ...

A helicopter is LIKE a hummingbird, it can hover
A helicopter is LIKE an aeroplane, it can fly forwards
A helicopter is LIKE a person on rollerskates on an ice rink, it is somewhat unstable
A...
Forum: Rotorheads
25th Mar 2024, 11:59
Replies: 100
Views: 7,285
Posted By Ascend Charlie

Remember that the stick would have been held...

Remember that the stick would have been held central, with the swash plate level with the deck, so the rotor couldn't have done much different.
Forum: Rotorheads
21st Mar 2024, 21:49
Replies: 100
Views: 7,285
Posted By Ascend Charlie

​​​​​​​It's when the textbook gets it wrong that...

​​​​​​​It's when the textbook gets it wrong that these topics recur. The FAA handbook is still full of wrong statements and misleading "vector" diagrams.
Forum: Rotorheads
20th Mar 2024, 11:37
Replies: 100
Views: 7,285
Posted By Ascend Charlie

Also note that if the rotor system was truly a...

Also note that if the rotor system was truly a gyroscope, it would have to follow the first property of a gyroscope - RIGIDITY IN SPACE, i.e. it would be very difficult to disturb it from its axis.
...
Forum: Rotorheads
19th Mar 2024, 22:37
Replies: 100
Views: 7,285
Posted By Ascend Charlie

The books use "precession" as a way of getting...

The books use "precession" as a way of getting stupid students to sort-of understand why the disc behaves the way it does.

The swash plate and links feed in a pitch angle to the blade. Blade's...
Showing results 1 to 7 of 7


 
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