Stuart Buchanan wrote: > Hi All, > > Enthused by a comment on the forum by snork > (http://www.flightgear.org/forums/viewtopic.php?t=1333), I've been working on > an extension to the generic blackout/redout script which attempts to simulate > the feeling of compression due to g-forces, by moving the pilot viewpoint > vertically depending on the apparent g-force. > > This is a simplified version of what vivian, Josh et al. created for the > Buccaneer and other aircraft. > > Of course, the main advantage of this is that it is completely generic, and > pretty lightweight too. The overhead ontop of the redout/blackout is minimal: > one extra property read/write per frame, only when the feature is enabled and > in cockpit view. > > A patch for this is available from > http://www.nanjika.co.uk/flightgear/headshake.patch > > Comments are very welcome, but I'm particularly interested in peoples views > on the following: > > 1) Obviously this duplicates some aircraft-specific code, and one can argue > that this sort of feature is only important for high-energy jets, where it > should be modelled in more detail than I have done. I've been playing with > this code on the Stampe, A4-F and Pitts, and have felt that it has improved > the feeling of realism, but then I wrote it ;) Do people feel it is worth > providing a generic implementation, given that for most GA flying is at 2g or > less, and this will move the pilot viewpoint 5cm! > > 2) Currently the redout and headshake enabling properties are userarchive, > which (as I understand it) means that the user's preference will over-write > any aircraft setting. Given that both these generic features duplicate > existing aircraft-specific code, I think I should remove this flag, so > aircraft designers can over-ride it. Any comments? > > 3) At the moment, this feature is limited to the y-offset of the pilot > viewpoint. For non-military aircraft, the most significant g-forces will be > felt in the y-axis (in the pilots frame of reference), as they cannot yaw > fast enough to cause any in the x-axis, and they don't have enough power to > cause any in the z-axis. If it is worth providing a generic feature, is it > worth making it multi-dimensional? > > -Stuart > > Hi Stuart , I had this option long long ago in all my aircraft , but Martin Spot claimed that it was unrealistic , so I removed it ... the old code is still in the 787 (which is a modification of the 777 Justin and I worked on ) , and the A6M2 has the code in jwarbirds.nas ... Personally , I like the effect :) Cheers Syd
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