Recent content by Gibbon

Simplified drag equation?? Hi, I am a 3D programmer and I am trying to apply drag to some of my objects in my software. After looking around and from previous research i know that calculating drag isn't such a simple thing to do and involves knowing air density, object area and the drag...

Hi Janger, i agree but i seem to run into a lot of problems with it and at first i thought it was simply my programming and me not quite understanding it and doing it incorrectly, as i have now tried and tried and tested and more testing I am startin to believe there might be a bug in the...

Hi, I am trying to implement better / more realistic pendulum effect into my paragliding simulator. When a paraglider turns hard it results into a dive, but as the center of mass is near the pilot and higher lift/drag on the wing, it soons swings / pendulums back into level flight. Im...

K^2, thanks for you information. The problem I am having is calculating the relative wind vector, I am having a hard time trying to find a solution to this. I have my wing chord angle, but I am not sure how to get the wings moving angle in order to find the angle between them. Ill take a...

Hi, thank you for you replies, i really do envy you guys who can have all the information like that on hand. I wish i did. I for some reason am missing just that "thing" that's preventing me from my goal, I am a computer programmer and I've been a apart of aviation from childhood till now...

Hi, I am again toying with programming and simple flight movements and whilst researching I've read that the angle of attack is perpendicular to the relative wind or flow and NOT an aeroplane wing. But isn't relative flow always in the oppostive direction of the planes direction vector...

Ok, thanks Jeff, ill have good go at adding the vertical stablizer in. Also i think i need to have another good look over my variables measurements as i don't think there consistant and also... i know for sure some are based on real specs of a cessna (which i chose to base it on) and others that...

Hi Brian, cheers for your advise. And yes i agree and i am doing my best learn about all these, but please correct me if I am wrong (because more than likely i am!) but 6-DOF and a few other factors mentioned are not actually necessary for the basic flight sim. For instance, I am sure Microsofts...

If your still around jeff :), I am getting closer but its still not working as it should, and i think that's down to the fact I am being ignorant to what your said here: And i think that's because I am not 100% understanding it (down to me!) So I am going to keep reading it and trying too...

Thank you Jeff, very, very helpful information! Later today I am going to do all the new calculations and see how it goes. Every night though it gets closer and closer. Ill keep you informed how it goes. You have been a huge help. Thanks Andy

Cheers Jeff, ill have a good luck into it later. I've not really give the center of mass and gravity much thought. Well not a lot anyway. Im also now thinking if I am going about adding forces and torque correctly. You see i have made my plane up from 4 rigid bodies. fuselarge with a...

Thanks Jeff, Thanks again for taking time to help. I figured out the problems you referred to in your last post (should of reposted and said, sorry). I therefore started to put things into practise in 3D, and receiving strange problems. Without "trying" to explain, I've drawn a very crude...

Another problem i am finding, i have wrote a quick app that simulates a wing that i can change AoA so i can see the effects to lift. And when my wing is at 0 AoA along the vector --------> its fine and if i tilt the wing up, Cl goes up and lift goes up (and using the above equation u stated...

Ok, that's sort of somthing i have been using. And if that's a "around about way for now" about doing it then that is what ill do. When you refer to: "This gives you a CL of 1.0 at 10 degrees AOA." Is that AoA in radians? I am understood it needs to be? Or am i incorrect? Thanks Andy

Hi Jeff, thanks for stopping by again, you helped me last time with a related question. I have looked into this and this is where i get confused. In Computer programming terms, do i then have to somehow calculate (in real time) the CL by pulling data from a table of "aerofoil" data? CL is...