Recent content by rpmc

Andre, Thanks to your patient explanations, the light finally went on for me. I had a visualization problem. When I thought of the final Yaw rotation, I now realize I had always visualized it at Bank=0 or at Pitch=0, and in those two specific attitudes only, a 90 degree Yaw flips the Pitch...

Andre, This still isn’t working for me. Maybe it's wrapped up with intrinsic vs. extrinsic rotations and the actual nature of aircraft attitude angles as measured by the aircraft instruments (that's what I'm using as my "input"). I’m not sure. As I view the problem, if the fourth rotation...

Hmmm, To make sure that I understand, when you say "You can see from the coords that it's just a bit to the East of North and pointing up a bit (remember that the positive z direction is down), which is what you'd expect from those movements.", you are looking at 0.9089 -0.1493 0.3893...

Ooops ... I was editing my last response when you posted ... Bob

First off, Andre, thank you so much for taking the time to help me. Your efforts are greatly appreciated. It is quite embarrassing to admit that I still do not understand this. I know that I am missing something very fundamental, doing something very wrong, but I don't see it yet. Here's my...

Thanks Andre, I think I understand the concept of your approach, vectors vs angles, but I'm still hung up on some points. Do you have the time to expand a bit on "A rotation of a vector is achieved by pre-multiplying it by a rotation matrix"? I'd like to see the matrix math representation of...

Suppose an aircraft attitude is given by Heading=040 degrees Pitch=15 degrees Up Bank=20 degrees left bank And then the aircraft “yaws”, or rotates 30 degrees left about its yaw axis. What are the new Heading, Pitch and Bank angles? What do the rotation matrices look like that describe...

Apologies up front for the long question … I have tried to be brief. I want to define camera angles for Google Earth (GE) when rotated about an aircraft yaw axis. The input is Latitude, Longitude, Altitude plus Heading, Pitch and Bank angles, actually coming from Flight Simulator. These drive...