Talk:Autorotation (fixed-wing aircraft)

message: The reference at the bottom of the page is http://www.copters.com
Shouldn't it be http://www.copters.com/pilot/autorotation.html instead?--Taida 18:05, 18 June 2006 (UTC)
thread_title:  References 

message: This is a good start, but the whole article only really focusses on the use of autorotation in a single engine helicopter following an engine failure. 
As briefly mentioned, autorotation can also be used in other emergency procedures, such as following a yaw control failure (eg tail rotor drive shaft failure). The reasons for the use of autorotation in this case is not mentioned.
It is also the designed principle of flight for some rotary wing aircraft, specifically the autogyro, but also higher speed aircraft such as the Sikorsky ABC.
Some general, easy to understand, detail on the forces on a rotor blade that keep the rotor turning is also necessary.
I will have a look at some edits over the next few weeks hopefully.
--Herb b 01:06, 30 June 2006 (UTC)
thread_title:  Suggestion 

message: I've reverted the edit by Mrhinelander.  He added some technical details, but it isn't exactly formal english, and isn't implemented very well.  Could someone roll these in better please? martianlostinspace 21:49, 5 July 2006 (UTC)
thread_title:  RV Mrhinelander 

message: The wikify template is now on.  Anyone have the time to clean it up, and integrate the details at the top, thanks. --martianlostinspace 16:30, 16 July 2006 (UTC)
replies: text: So done, but shouldn't the entire "Common mistakes" section be deleted per WP:NOT "how to" issues?  (As well as other "how to" instructions removed?) --RJFerret 20:14, 16 July 2006 (UTC)

text: Need to remove use of second person form in the article and change to third person. —QuicksilverT @ 18:14, 24 October 2006 (UTC)
thread_title:  Wikify 

message: Prior to 5 April 2010, the second paragraph in this article stated the following:
:In the operation of fixed-wing aircraft, autorotation is the name given to the manner in which an aircraft in a stall, or approaching the stall, displays a tendency to roll spontaneously to the right or left. A fixed-wing aircraft in a spin rolls continuously to the right or left, displaying the characteristic known as autorotation.
This paragraph was supported by in-line citation of:
* Aerodynamics by L.J. Clancy, (Sections 16.48 and 16.49)
* Flying Qualities and Flight Testing of the Aeroplane by Darryl Stinton (page 503)
On 5 April, the second paragraph was amended by IP 70.188.238.165 to state the following:
:In the operation of fixed-wing aircraft, autorotation is a combination of roll and yaw that propagates itself and progressively gets worse due to asymmetrically stalled wings. It is the name given to the situation in which a yawing moment is introduced to an aircraft in a stall. This yawing moment results in a proverse roll which then leads to the asymmetrically stalled wings. The more stalled (inside) wing produces more drag than the less stalled (outside) wing.  This condition propagates the yawing moment which in turn causes the proverse roll. A fixed-wing aircraft in a spin rolls and yaws together continuously to the right or left, displaying the characteristic known as autorotation.
This amendment emphasised that autorotation in a fixed-wing aircraft includes yawing.
The quoted text in the books by Clancy and Stinton support the idea that rolling and yawing are both essential elements in spinning, but neither support the idea that autorotation includes yawing.  Therefore the in-line citations do not support the amendment made by IP 70.188.238.165.  For this reason, I reverted the amendment.
The existing in-line citations support the following ideas:
*Autorotation is a self-sustaining motion in roll
*Spinning is a self-sustaining  motion involving autorotation and yaw.
In the absence of an in-line citation to support the idea that autorotation includes yawing, this idea should be omitted from the article.  Dolphin51 (talk) 01:04, 7 April 2010 (UTC)
thread_title:  Relevance of yaw 

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thread_title:  External links modified (January 2018)