hi All .
Here is our product ( still in development) . It is a space simulation , -like Orbiter , but for iPad/Android - Featuring correct physics , entire solar system wide space travel , real planets / surfaces , and a lot - really a lot !- of content/functionality.
A few points noteworthy :
1… we had to create a entire new physics library , to cope with double precision numbers. Basicly we have rewtritten physx , creating a new set of DRigidBody , DVector3s , DColliders , etc… so we can have millimeter accuracy on the models/ velocities/positions ,yet having a functional full scale solar system up-to pluto.
2 … We used a tecnnique of Virtual Textures ( as in Cellestia) , to recursively render planets with fairly good resolution , variable as needed , and keeping in memory only the tiny fraction of “slices” vissible at any time . This way we can render the full size earth with the Blue-Marble tile set from Nasa ( res <50m ) .while still fitting on a ipad/iphone
3… The navigational computer , for the apollo mission is running a emulated Apollo Guidance Computer running (emulated) the original unmodified source code from the 1960s
4 The physics integrator solves numerically for up to 10 bodies , this way It is possible to create gravitational slingshots , full free-return trajectories , etc…
5 The 3D Map option renders the orbits both analytical and numerically , so IT can be used as a route planner
6 We are bundling all the “main” spacecrafts in one go (It would be really tricky to add them later as addons/DLC ) . So we include Mercury/Gemini/Apollo/Skylab/Shuttle missions . In total 300 different missions
7 Most of the MFDs (those square displays ) are accurately represented from the orbiters/shuttle/etc… While landing the Space Shuttle you can actually see meaningfull data there that will help you to land ( HSI , FD , NAV AID ) ,etc…
8 The planett’s positions are computed using the most advanced STVP84 matematical model … up to a millimeter(!) . It shows even the eclipses at the right time ! .
project page here … www.space-simulator.com
We are halfway thought the development right now . We still need to add the capcom ( the radio chatter from MissionControl ) , particles ,effects , optimize the whole thing a lot , sounds , brieffings , and more importantly the front end ( a.t.m is still based on the Unity3D GUI .) . We plan to kickstart-it in a month or so … , and We would be really pleased to hear all your constructive or mildly destructive feedback ! !
Thanks guys !
Keep up the good work 
