tag:blogger.com,1999:blog-5821098719340852065.post3584309219009512861..comments2024-03-25T09:31:36.926+01:00Comments on Furahan Biology and Allied Matters: Nereus (or how you can have radial flight with an odd number of wings)Sigmund Nastrazzurrohttp://www.blogger.com/profile/16449461215427527447noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-5821098719340852065.post-81325839339316331662013-07-12T02:15:18.100+02:002013-07-12T02:15:18.100+02:00Wouldn't the walking gait from your page on cl...Wouldn't the walking gait from your page on cloakfish work with an odd number of wings?<br /><br />Also, if the movement is totally sinusoidal with evenly arranged phases then you get no net torque on the body before considering aerodynamic effects, much like three-phase AC power.Andrew Broekerhttps://www.blogger.com/profile/03455959935160897929noreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-63391154228380082762012-12-15T02:12:14.203+01:002012-12-15T02:12:14.203+01:00Nereus animals looke like pokemons. Nereus animals looke like pokemons. TalahRamahttp://paleofreak.blogalia.comnoreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-29544392050580075102011-01-27T20:59:53.371+01:002011-01-27T20:59:53.371+01:00I had completely forgotten I had said that, so can...I had completely forgotten I had said that, so can I really claim anything? :)<br /><br />In any case, I think the option is viable, and I may just implement it in a future species, but don't let that stop anyone from trying the idea out as well...Evan Blackhttps://www.blogger.com/profile/10493966209787828900noreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-10299967449799859172011-01-25T22:25:21.830+01:002011-01-25T22:25:21.830+01:00RECTIFICATION
I was browsing and came upon one of...RECTIFICATION<br /><br />I was browsing and came upon one of Evan's comments from one year ago, on a post even older: http://planetfuraha.blogspot.com/2008/04/tetropters.html<br /><br />On rereading that, it is perfectly clear that Evan had designed the 'differential speed' solution for odd-winged clap and fling flight at the time. I must have forgotten that, and when I sat down to attack the problem a year later, I thought of the same solution. Hidden memories? Independent thought? I honestly do not know, but credit where it is due: Evan thought of it before I did.Sigmund Nastrazzurrohttps://www.blogger.com/profile/16449461215427527447noreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-34228544853485648332011-01-20T04:04:05.023+01:002011-01-20T04:04:05.023+01:00Digital painting? Awesome! I remember seeing one...Digital painting? Awesome! I remember seeing one of the head of a centauroid you did some time back. I can't wait to see more!Evan Blackhttps://www.blogger.com/profile/10493966209787828900noreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-36241495319722001162011-01-19T21:29:03.905+01:002011-01-19T21:29:03.905+01:00Evan: my pleasure! Your message reminded me to res...Evan: my pleasure! Your message reminded me to respond to J,W.'s solution for triradial clap and fling. I wanted to wait for more responses and was then sidetracked... Sorry.<br /><br />I will just repeat what I wrote to Evan a while ago. It seems that all three of us thought of the variable speed solution: "The trick proved to be simple: in my designs so far, the clockwise movement of a wing took just as long as its counter-clockwise movement. A wing's movement cycle is therefore divided into two halves. Say a cycle starts at 0 degrees and ends at 360 degrees, then the two points where the wings are at their furthest positions are 180 degrees apart. Where you start the cycle is arbitrary: suppose you define one clap position, the furthest in the clockwise direction of a wing, as occurring at 0 degrees, then the other clap position at the counterclockwise point will be at 180 degrees in the circle. All other wings will have to conform to this. This only works if there is an even number of wings. Now for a triradial design. Suppose it takes a wing one third of a cycle to move in the clockwise direction between the two clap positions, and two thirds of a cycle to move back in the counterclockwise direction. Do this for all three wings, and you will find that there will be claps at 0 degrees (wings 1 and 2), 120 degrees (wings 1 and 3) and 240 degrees (wings 2 and 3).<br />Is this a better solution than we one we had? I do not know really. Claps do not occur synchronously, but instead occur at intervals, and each clap would unbalance the beast a bit. What you would also need is to try to make the wing generate as much lift going one way as the other, even though it takes twice as long to do so (angle of attack?)."<br /><br />Next weekend: my first digital Furaha painting will be revealed..Sigmund Nastrazzurrohttps://www.blogger.com/profile/16449461215427527447noreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-5258529788232270012011-01-19T21:14:34.755+01:002011-01-19T21:14:34.755+01:00Thanks guys for your comments, and thanks Gert for...Thanks guys for your comments, and thanks Gert for the blog post! My website has had so much attention: more in the last month than in the year before! <br /><br />A solution for three-winged flight that came to my mind involves the wing going faster in one direction than the other. This introduces stability issues, but perhaps not beyond what life forms can handle.<br /><br />I've seen Purple-Plasmid's work as well. I'm very impressed with it.Evan Blackhttps://www.blogger.com/profile/10493966209787828900noreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-47696237592928419912011-01-05T13:06:10.139+01:002011-01-05T13:06:10.139+01:00Fantastic. Absolutely fantastic. Many, many thanks...Fantastic. Absolutely fantastic. Many, many thanks for sharing.<br /><br />I suggest you to check out Purple-Plasmid's gallery in deviantart, if you haven't seen it yet.<br /><br />http://purple-plasmid.deviantart.com/gallery/#Fentiltentaculusnoreply@blogger.comtag:blogger.com,1999:blog-5821098719340852065.post-61561581669391388352011-01-04T00:48:42.152+01:002011-01-04T00:48:42.152+01:00"Recently I came up with a way to have a clap..."Recently I came up with a way to have a clap-and-fling mechanism with just three wings though. It would increase lift but introduce some new problems."<br /><br /><br />As far as i can figure it out, with an odd number of wings you would have to do one (or both) of the following:<br /><br />* give the different wings each different ranges of movement (I.E. one might move through 160º, while another 80º)<br />* make different wings move at different speeds, at different times.<br /><br />Most plausibly (i think this is the one you thought of), is that one wing would move right and left at a constant speed, while the other two would switch between double speed or half speed at alternating times.<br /><br />My intuition is that this (especially the first) would have dire aerodynamic repercussions, but i'm no aerodynamic expert.<br /><br />I had thought about this problem before and come to no remotely satisfactory solution... but since you said there was a solution i had to try again.j. w. bjerkhttps://www.blogger.com/profile/06800512284198234202noreply@blogger.com