Difference between revisions of "Scott Manley YouTube Index"

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(OrbitMFD)
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OrbitMFD is a multi-functional display that is included in the Orbiter basic package. The MFD displays the central body about which the ship is orbiting, the orbit of the ship as well as the orbit of another ship, space station, or natural body in orbit around the same body. The MFD also displays various orbital elements and parameters of the ship and can also display the elements and parameters of the other aforementioned body.
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#redirect: [[List of Orbiter related videographers]]
  
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== Display ==
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[[Category:Redirected pages]]
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=== Graphics ===
 
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By default, the body which has the highest gravitational influence on the vessel is the reference body, so, in LEO, the earth would be the reference body as it has the most influence on the vessel. The user can select other reference bodies (any natural body in the simulator) by selecting the REF button and selecting other bodies in the popup menu.
 
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The orbits the MFD displays are the osculating orbits at the current epoch. What is displayed are the Keplarian orbits calculated from the ship's current state vectors of the reference body. Over time, the orbit may change due to perturbation of other gravitational bodies, planet shape, and thrusting by the ship itself.
 
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== Display Modes ==
 
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Orbital Elements displayed are:
 
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{|class="wikitable" border="2"
 
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|'''MFD Label'''||'''Element'''||'''Unit of Measure'''||'''Description'''
 
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|SMa||Semimajor Axis||m, km, AU||One-half the sum of the major diameter (Apoapsis and Periapsis). If Ecc ≥ 1, SMa will show a negative number
 
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|SMi||Semiminor Axis||m, km, AU||One-half of the minor axis
 
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|PeR<br>PeA||Periapsis Radius<br>Periapsis Distance||m, km, AU||Radial distance from the center of the reference body to the low point of the orbit<br>Radial distance from the surface of the body to the low point of the orbit
 
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|ApR<br>ApA||Apoapsis Radius<br>Apoapsis Distance||m, km, AU||Distance from the center of the reference body to the high point of the orbit<br>Radial distance from the surface of the body to the high point of the orbit
 
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|Rad<br>Alt||Radius Vector<br>Altitude||m, km, AU||Radial distance from the center of the reference body to the vessel<br>Radial distance from the surface of the reference body to the vessel
 
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|Ecc||Eccentricity||0 - ∞||Measure of how circular or non-circular the orbit is. Circle = 0, ellipse = >0 to <1, Parabola = 1, Hyperbola >1
 
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|T||Orbital Period (Time)||Seconds||How long it takes to make one revolution
 
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|PeT||Time to next Perapsis||Seconds||How long until the next periapsis, if past the periapsis
 
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|ApT||Time to next Apoapsis||Seconds||How long until the next apoapsis, if Ecc ≥  will show N/A
 
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|Vel||Velocity||m/s|| How fast the body is going
 
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|Inc||Inclination||Degrees (°)|| Vertical tilt of orbit in reference to the ecliptic or the equator of the reference body
 
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|LAN||Longitude of Ascending Node||Degrees (°)||Horizontal orientation of the line of ascending node with respect to the vernal equinox
 
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|LPe||Longitude of Periapsis||Degrees (°)||Angle measured from the vernal equinox to the peiapsis as if the inclination is zero
 
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|AgP||Argument of Periapsis||Degrees (°)||Angle measured from the ascending node to the periapsis
 
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|TrA||True Anomaly||Degrees (°)||Position of the body along the orbit from the periapsis
 
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|TrL||True Longitude||Degrees (°)||Position of the body along the ecliptic from the vernal equinox
 
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|MnA||Mean Anomaly||Degrees (°)||Ficticious position of the body along the orbit from the perapsis as if it was moving at a constant velocity
 
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|MnL||Mean Longitude||Degrees (°)||Ficticious position of the body along the orbit from the perapsis as if it was moving at a constant velocity
 
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|G||Gravity contributiion||||Releative fraction of gravity of the reference body to the total gravitational field of the vessel
 
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|}
 

Latest revision as of 13:36, 30 June 2023

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