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  1. Zatnikitelman

    Question ORB:Connect and Remote MFD

    Two quick questions entirely unrelated to each other. What ist he current status of ORB:Connect especially in regards to Orbiter 2016? It seems the versions I've found (2.1 is latest?) are for Orbiter 2010 so maybe I'm missing something? Second, was there at one time a remote MFD program...
  2. Zatnikitelman

    Relativistic large-scale collisions

    Does anyone know if any theoretical work has been done on the effects of a relativistic large-scale collision? Like if an asteroid were accelerated to 99.999...% light speed and slammed into a planet? The backstory. In a Star Trek Enterprise novel I'm reading, a major plot point centers around...
  3. Zatnikitelman

    Neural network for sequence prediction

    Hey guys, I know I've been absent from Orbiter itself for a long time, but I'm working on that. But I still poke around here and hope to get back into flights and dev work one day. So with that, I know neural networks have been a topic around these parts a number of times so I'm hoping someone...
  4. Zatnikitelman

    [Spoilers?] Star Wars Episode IX cast announced

    I couldn't find the original topic for the new Star Wars films in general. Some might find this spoilery so read further at your own risk. . . . . . . . . . . . . . . . https://www.cnn.com/2018/07/27/entertainment/star-wars-9-cast-cast/index.html They are going to re-use footage of Carrie...
  5. Zatnikitelman

    Question Apollo 13 Oddity - 65 volts?

    One thing that has struck me as slightly odd about Apollo 13 is why the thermostat switch had to be designed for two voltages, 28 from the spacecraft and 65 from the launchpad. Why? Why wasn't the launchpad designed to just output the same 28 volts the spacecraft would be using? From an...
  6. Zatnikitelman

    PID derivative value oddity

    I'm working on tuning an autopilot for a launcher in Orbiter, and I'm breaking out the data into a table to see what effects the variable changes are having. One thing I noticed though when the vehicle approaches the setpoint, the error rate remains the same. Here's the data...
  7. Zatnikitelman

    Tablet case dilemma

    So, I bought an Incipio Capture case for my Surface Pro 3 tablet from Amazon. It comes in two parts, a plastic inner shell, and rubbery outer skin. The plastic shell includes cut outs for all the ports and buttons, the skin contains "doors" and its own buttons (think the button pad on a TV...
  8. Zatnikitelman

    Problem SetWindowText on edit box closes window

    I hit a strange problem writing a scenario editor page. It seems that a call to SetDialogText for one specific Edit Control I have is causing the window to close, and I'm at a loss as to why. Here's a chunk of my message handler method: case WM_NOTIFY: if (((NMHDR*)lParam)->code ==...
  9. Zatnikitelman

    Problem Scenario editor button does not appear (2010)

    So after a long hiatus, I'm getting back into Orbiter, picking up with my truss system. I'm trying to get everything recompiled with VS2013, and I got it to work with a surprisingly small number of issues, however, I'm stuck on getting the scenario editor pages to appear. Here's the relevant...
  10. Zatnikitelman

    SDK Question Multiple calls to SetAttitudeRotLevel interfere?

    I've noticed some odd behavior with the above method. It appears when I have two calls to this method, but for two different axes, the latter call doesn't seem to work. So my scenario looks like this: //In clbkPreStep sprintf(oapiDebugString(), "Roll %lf %lf %lf", rollval, dCurrRoll...
  11. Zatnikitelman

    Angle between vectors in a given plane

    I'm a little stuck working on the autopilot for my Prometheus. I've made a little more progress in a combined vector system to work on all three axes at once. Here's the code I'm working with so far: VECTOR3 attitude = _V(0, 0, 0); double x = 70*RAD; //pitch double...
  12. Zatnikitelman

    Railway signaling simulator

    A while ago I asked for some help with passing references in C#. I mentioned that it was a project outside of Orbiter. This is it. For about 3 or so years, I've been working on and off (mostly off) on a railroad signaling simulator. I am pleased to say that I am releasing version 1 to the wild...
  13. Zatnikitelman

    Orbital transfer vehicle design question

    When looking at long-range transfer vehicles, like could be used for heavy transfers between LEO and the Moon or LEO and Mars, I've noticed one peculiarity in the structural design of such modules. Most follow a design of engine > tanks > open bay > crew module. The peculiarity is that in...
  14. Zatnikitelman

    Question C# Pass object by reference - uninitialized

    I'm working on a C# program outside of Orbiter, and I've hit a little snag. I need to pass a dictionary from one class (a windows form) into another (call it a child form, though there's no polymorphic relationship) with the result being that I'm able to edit the original dictionary. In C++ this...
  15. Zatnikitelman

    Max gimbal angle for engines?

    I'm somewhat getting back to working my Prometheus (again) and was wondering if anyone knew what the maximum gimbal angle of engines like the RS-68 is? I found the maximum angle of the SSME to be +/- 10.5 degrees, but I didn't know if it was any different for more conventional launch vehicles...
  16. Zatnikitelman

    Question RasPi serial port server?

    So I have an unusual application for a Raspberry Pi. Basically, what I need is for it to connect to a device via serial port, then send that data over a network, then have a Windows computer be able to receive that data, but as a serial port. In other words, if I'm in a program that requires...
  17. Zatnikitelman

    Bussard ion drive?

    I don't expect to be a multi-gazillionaire any time soon so I guess there's no reason to hold onto this idea. Would a low earth orbiting satellite using an ion sustainer engine be able to refuel itself from the upper atmosphere similar to how a Bussard ramjet would work? I was inspired after...
  18. Zatnikitelman

    LVLH direction vector

    I'm stuck, I'm working on an autopilot for my Prometheus Launcher once again and I've actually managed to get it to work reasonably well thanks to an updated understanding of PID controllers. I'm looking to improve on it and I need to get the LVLH direction vector of the vessel as well as being...
  19. Zatnikitelman

    Problem Unable to load vessel module - what could cause?

    So I'm trying to make some updates to my old Prometheus Launch Vehicle, but it's not even showing up in Orbiter. It's not crashing, and the Orbiter.log only shows this: **** Orbiter.log Build Aug 30 2010 [v.100830] Timer precision: 2.84443e-007 sec Found 1 joystick(s) Devices enumerated: 6...
  20. Zatnikitelman

    Apollo 13 20th anniversary re-release

    Just wondering if anyone else picked up the 20th anniversary Blu-ray remastered re-release of Apollo 13? I couldn't buy it fast enough and it came this past Tuesday (HAIL PROBE!). I'm hosting a watching party for a few friends on the 13th!
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