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	<title>Real-Time Physics Simulation Forum</title>
	
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	<updated>2021-03-20T16:26:52+00:00</updated>

	<author><name><![CDATA[Real-Time Physics Simulation Forum]]></name></author>
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		<entry>
		<author><name><![CDATA[skinduptruk]]></name></author>
		<updated>2021-03-20T16:26:52+00:00</updated>

		<published>2021-03-20T16:26:52+00:00</published>
		<id>https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=43359#p43359</id>
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		<title type="html"><![CDATA[paragliding simulation prototype demo (bullet v2.71 SDK)]]></title>

		
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PARAGLIDING SIMULATION PROTOTYPE DEMO (bullet 2.71 SDK)<br><br>THANK YOU for the amazing bullet code library.  i have wanted to try this project since 2008 and finally sat down this week to give it a go!<br><br>part v playing around with the wing force model and wing stiffness model.<br><br>when wing stiffness is low, applying a tension force along the long axis of the wing prevents the hot air balloon problem.  this allows a loose wing good for ground-handling and take-off practice mode.<br><br>when wing stiffness is too high, instant ground spiral!  the wing becomes responsive and will be good for ACRO practice mode eg how to exit spirals or SATs.<br><br><a href="https://youtu.be/TCZYH6xYjs0" class="postlink">PART V youtube video link</a><br><br>part vi flight tests using brakes on the bullet soft body wing.<br><br>NEW wing force model with forward speed in the direction the wing is facing (via cross product of the wing span and -y vectors).  previously the wing force was a simple velocity hack of the render loop which always added forward speed in the +z direction only.<br><br><a href="https://youtu.be/UH1MQ6us_-w" class="postlink">PART VI youtube video link</a><p>Statistics: Posted by <a href="https://pybullet.org/Bullet/phpBB3/memberlist.php?mode=viewprofile&amp;u=13933">skinduptruk</a> — Sat Mar 20, 2021 4:26 pm</p><hr />
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