{"id":105,"date":"2015-04-06T20:47:17","date_gmt":"2015-04-06T20:47:17","guid":{"rendered":"http:\/\/www.heli-x.info\/cms\/?page_id=105"},"modified":"2019-07-23T15:05:26","modified_gmt":"2019-07-23T15:05:26","slug":"physics","status":"publish","type":"page","link":"https:\/\/www.heli-x.info\/cms\/physics\/","title":{"rendered":"These features define the great physics engine of HELI-X"},"content":{"rendered":"<h4>Physics<\/h4>\n<p>The main developer of HELI-X holds a PhD in applied mathematics and is an expert in computational fluid dynamics. He worked successfully on many projects in aerodynamics. He is not only pilot of R\/C helicopters and planes but also a private pilot of airplanes. He says: \u00ab Of course there are many books and publications on helicopter aerodynamics and flight simulation available. However, the aerodynamics described in these publications mainly deal with the stationary situation and are in a Reynolds number regime which is different to what is of interest for R\/C helicopters and planes. But even more important, the flight dynamics of R\/C helicopters is much more complex than that of the full size helicopters, so that particular models had to be built. In fact, the physics engine of HELI-X is written from scratch. Another important feature of HELI-X is that also the flow outside of the helicopters or planes is modelled which e.g. enables a realistic behavior in auto rotations or the spin up of the rotors. \u201c<\/p>\n<p>Besides others, the following effects are modelled in HELI-X:<\/p>\n<ul>\n<li>Transitional lift<\/li>\n<li>Stall<\/li>\n<li>Ground Effect<\/li>\n<li>Dynamic Stall<\/li>\n<li>Vortex Ring State<\/li>\n<li>Boundary layer separation at the Blades<\/li>\n<li>Paddle dynamics<\/li>\n<li>Rotor head stiffness<\/li>\n<li>Nick\/roll coupling<\/li>\n<li>realistic stall behavior on wings and stabilizers<\/li>\n<li>hysteresis effects for the lift<\/li>\n<li>induced air resistance<\/li>\n<li>flaps and airbrakes<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Physics The main developer of HELI-X holds a PhD in applied mathematics and is an expert in computational fluid dynamics. He worked successfully on many projects in aerodynamics. He is not only pilot of R\/C helicopters and planes but also a private pilot of airplanes. He says: \u00ab Of course there are many books and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-105","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/pages\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/comments?post=105"}],"version-history":[{"count":6,"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/pages\/105\/revisions"}],"predecessor-version":[{"id":1047,"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/pages\/105\/revisions\/1047"}],"wp:attachment":[{"href":"https:\/\/www.heli-x.info\/cms\/wp-json\/wp\/v2\/media?parent=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}