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Old 01-17-2016, 11:58 PM   #1
Tex
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Arrow 83,000 km/s Earth Flyby

This is a cool sight. Load this scenario which only has the default delta glider running Orbiter 2010-P1. I was playing around with low flight times back to Earth from Neptune. The scenario begins with Earth just ahead. Watch as it passes below you at an insane speed!

Try to do an aerocapture if you can.

Code:
BEGIN_DESC
~83,000 km/s velocity for this Earth flyby. Good luck stopping!
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 53779.0285860615
END_ENVIRONMENT

BEGIN_FOCUS
  Ship GL-02
END_FOCUS

BEGIN_CAMERA
  TARGET GL-02
  MODE Cockpit
  FOV 50.00
END_CAMERA

BEGIN_HUD
  TYPE Orbit
  REF AUTO
END_HUD

BEGIN_MFD Right
  TYPE Orbit
  PROJ Frame
  FRAME Ecliptic
  REF Earth
END_MFD

BEGIN_SHIPS
GL-02:DeltaGlider
  STATUS Orbiting Earth
  RPOS -40744752.04 272323.35 -154742893.23
  RVEL 24402.857 -142.166 78959.895
  AROT -0.10 -17.17 -1.58
  AFCMODE 7
  PRPLEVEL 0:0.060000 1:0.070000
  NAVFREQ 0 0 0 0
  XPDR 0
  AAP 0:0 0:0 0:0
END
END_SHIPS
Attached Files
File Type: scn Insane Earth Flyby.scn (695 Bytes, 35 views)
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Old 01-18-2016, 12:57 AM   #2
Lmoy
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83 km/s? How long did it take to go to Neptune and back?
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Old 01-18-2016, 01:52 AM   #3
Tex
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This was from a Neptune parking orbit to Earth. TEI to Earth encounter took 4.2 years.

Oh and naturally there was not enough fuel in the delta glider...I had to manually add more just to finish the TEI burn.
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Old 01-18-2016, 02:31 AM   #4
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By chance, I saw a Mars flyby was possible after slinging past Earth in the above scenario. Trip from Earth to Mars took just barely over one month after the Earth sling!

Code:
BEGIN_DESC
Fast Mars Flyby.
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 53810.9810157695
END_ENVIRONMENT

BEGIN_FOCUS
  Ship GL-02
END_FOCUS

BEGIN_CAMERA
  TARGET GL-02
  MODE Cockpit
  FOV 50.00
END_CAMERA

BEGIN_HUD
  TYPE Orbit
  REF AUTO
END_HUD

BEGIN_MFD Left
  TYPE Orbit
  PROJ Ship
  FRAME Ecliptic
  ALT
  REF Mars
END_MFD

BEGIN_SHIPS
GL-02:DeltaGlider
  STATUS Orbiting Mars
  RPOS -62989550.66 -4075577.87 -100248682.01
  RVEL 35776.004 2040.927 53282.961
  AROT 2.19 -33.84 178.46
  RCSMODE 2
  AFCMODE 7
  PRPLEVEL 0:0.180000 1:0.330000
  NAVFREQ 0 0 0 0
  XPDR 0
  AAP 0:0 0:0 0:0
END
END_SHIPS
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Old 01-18-2016, 02:58 AM   #5
Thunder Chicken
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That's 28% of the speed of light.

Good luck aerobraking!
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Old 01-18-2016, 03:24 AM   #6
MaverickSawyer
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Quote:
Originally Posted by Thunder Chicken View Post
 That's 28% of the speed of light.

Good luck aerobraking!
Well, it's be a pretty spectacular light show for a few moments.
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Old 01-18-2016, 07:37 AM   #7
Lmoy
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Quote:
Originally Posted by Thunder Chicken View Post
 That's 28% of the speed of light.
It's about 0.028%. Remember the speed of light is about 300000 km/s
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Old 01-18-2016, 09:54 AM   #8
Urwumpe
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Quote:
Originally Posted by Lmoy View Post
 It's about 0.028%. Remember the speed of light is about 300000 km/s
The scenario description says 83,000 km/s or 83,000,000 m/s ...

EDIT: But the scenario really contains 83 km/s

Code:
RVEL 24402.857 -142.166 78959.895
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Old 01-18-2016, 10:24 AM   #9
fred18
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for speed of light earth flyby there's this:

http://www.orbithangar.com/searchid.php?ID=6458
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Old 01-18-2016, 12:04 PM   #10
Dantassii
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I haven't actually done the Earth return part of my Solar System Transport Vehicle (SSTV) #02 Mission #1 from Earth to Pluto and Back, but try to imagine what the delta V requirements would be for a 100 day Pluto to Earth flight.

I know the delta V for the Trans Pluto Injection (TPI) burn for a 100 Day Earth to Pluto flight is around 350km/s so the delta V for the Earth Orbit Insertion (EOI) burn once you get back is going to be HUMONGOUS.

Lucky for me the SSTV-02 has around 25Mm/s of delta V when fully fueled...

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Old 01-18-2016, 05:22 PM   #11
Tex
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Quote:
Originally Posted by fred18 View Post
 for speed of light earth flyby there's this:

http://www.orbithangar.com/searchid.php?ID=6458
Thanks, that was cool!
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Old 01-18-2016, 07:31 PM   #12
jedidia
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Well, that's what happens when you fall asleep during frameshift.
Next stop, sun. Better wake up now!
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