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Old 02-07-2013, 07:11 PM   #1
flytandem
Tutorial Publisher
 
flytandem's Avatar
Default Earth Mars Earth short mission duration

Here's a choice of 3 different scenarios. All three start out the same with an eject that goes inward to Venus to sling to Mars. Then the difference in the 3 is:
1. A landing on Mars that has about a month on the surface then an easy eject to a soft encounter at Earth for total mission time of about 20 months, Pe vel= 11.7 km/sec..
2. Abort the Mars landing in the first scenario. Sling Mars to return to Earth for fairly fast encounter speed. Total mission time= 16 months. Encounter Pe vel= 16.5 km/sec.
3. Abort the Mars landing in the first scenario. Sling Mars to Earth for a later but softer encounter speed. Total Mission time= 22.5 months, Pe vel= 13.7 km/sec.

The idea would be to evaluate system performance and decide in the last few days before arriving at Mars if a landing is possible or if one needs to skip the landing and with a MCC to sling back to Earth. Then if the sling to Earth is decided, one has the choice of a rapid return but fast Pe velocity at Earth, or a longer return time with a slower Pe velocity at Earth.

Here are the scenarios:
1.
Code:
BEGIN_DESC
Landing on Mars. 29.5 days stay on surface. Then return to Earth. Total mission time= 588 days.
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 57845.0036723390
END_ENVIRONMENT

BEGIN_FOCUS
  Ship 3
END_FOCUS

BEGIN_CAMERA
  TARGET 3
  MODE Cockpit
  FOV 60.00
END_CAMERA

BEGIN_MFD Left
  TYPE User
  MODE TransX
  Ship  3
  FNumber 7
  Int 1
  Orbit True
  Vector  1460415.63083 1256507.31542 6072740.46199
  Vector  -369.843156708 -41.6201590388 97.5541051063
  Double  3.98600439969e+014
  Double  57845.0036718
  Handle Earth
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 0
Plan
0 1
Plan
0 0
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  56330.7514771
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Pe Distance
 1  7645212
Ej Orientation
 1  0
Equatorial view
0 0
Finvars
  Finish BaseFunction
  Int 2
  Orbit False
  Handle Sun
  Handle Earth
  Handle Venus
Select Target
 0 Venus
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 1
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 1
Prograde vel.
 1  0
Man. date
 1  57845.0036723
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Prograde vel.
 2  -4418.8384505
Eject date
 6  57845.8784479
Outward vel.
 1  -1269.73464853
Ch. plane vel.
 4  501.475313428
Finvars
  Finish BaseFunction
  Int 4
  Orbit True
  Vector  718508093.075 1048236174.46 -6012400468.21
  Vector  -1135.83249931 -1690.52808039 9688.38840877
  Double  3.2485863e+014
  Double  58000.2145592
  Handle Venus
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 1
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0031857
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
View Orbit
0 0
Finvars
  Finish BaseFunction
  Int 3
  Orbit True
  Vector  -10967152172.3 2093043268.33 107071482250
  Vector  -40482.8020014 838.238521961 4361.23028803
  Double  1.32712764814e+020
  Double  58007.3802805
  Handle Sun
  Handle Venus
  Handle Mars
Select Target
 0 Mars
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 2
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0031793
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Velocity.
 1  0
Outward angle
 5  1.08571661872
Inc. angle
 3  0.155892808788
Inherit Vel.
0 0
Eject date
 1  58007.3802805
Finvars
  Finish BaseFunction
  Int 4
  Orbit True
  Vector  5377651531.9 -299833775.074 -1977295942.18
  Vector  -4977.16100437 277.518228891 1824.42678948
  Double  4.28282991638e+013
  Double  58196.6923034
  Handle Mars
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 1
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0031756
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
View Orbit
0 0
Finvars
  Finish BaseFunction
  Int 2
  Orbit True
  Vector  -123955980627 -998181658.669 -192862420465
  Vector  17889.7892898 -570.814507189 -6955.55209916
  Double  1.32712482783e+020
  Double  58209.1837486
  Handle Sun
  Handle Mars
  Handle Earth
Select Target
 0 Earth
Autoplan
0 1
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 1
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0031743
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Prograde vel.
 5  -2364.19177917
Eject date
 4  58238.5236553
Outward vel.
 3  -1829.11299313
Ch. plane vel.
 1  0
Finvars
  Finish BaseFunction
  Int 5
  Orbit True
  Vector  2641648805.43 -2598937227.34 -8466621346.9
  Vector  -1078.07486497 1071.04719337 3480.71802107
  Double  3.98600439969e+014
  Double  58406.1034923
  Handle Earth
  Handle NULL
  Handle NULL
Select Target
 0 None
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 2
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0036723
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Draw Base
0 0
Finvars
  Finish BaseFunction
END_MFD

BEGIN_MFD Right
  TYPE User
  MODE TransX
END_MFD

BEGIN_SHIPS
3:DeltaGlider
  STATUS Landed Earth
  POS -117.2601388 34.0891835
  HEADING 151.05
  RCSMODE 0
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000
  NAVFREQ 0 524 84 114
  XPDR 6
  GEAR 1 1.0000
  PSNGR 2 3 4
  TRIM 1.000000
  AAP 0:0 0:0 0:0
END
END_SHIPS

BEGIN_VistaBoost
END

BEGIN_ExtMFD
END
2.
Code:
BEGIN_DESC
Abort landing on Mars, sling to Earth. Total Mission Time= 477 days, Pe vel= 16.5 km/sec.
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 57845.0070428662
END_ENVIRONMENT

BEGIN_FOCUS
  Ship 3
END_FOCUS

BEGIN_CAMERA
  TARGET 3
  MODE Cockpit
  FOV 60.00
END_CAMERA

BEGIN_MFD Left
  TYPE User
  MODE TransX
  Ship  3
  FNumber 7
  Int 1
  Orbit True
  Vector  1352488.26215 1244853.15259 6100075.18777
  Vector  -372.009996072 -38.4862721827 90.3347734877
  Double  3.98600439969e+014
  Double  57845.0070393
  Handle Earth
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 0
Plan
0 1
Plan
0 0
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 0  0
Man. date
 0  57845.0057254
Outward vel.
 0  0
Ch. plane vel.
 0  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Pe Distance
 0  7645212
Ej Orientation
 0  0
Equatorial view
0 0
Finvars
  Finish BaseFunction
  Int 2
  Orbit False
  Handle Sun
  Handle Earth
  Handle Venus
Select Target
 0 Venus
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 1
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 1
Prograde vel.
 0  0
Man. date
 0  57845.0057293
Outward vel.
 0  0
Ch. plane vel.
 0  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Prograde vel.
 0  -4418.8384505
Eject date
 0  57845.8784479
Outward vel.
 0  -1269.73464853
Ch. plane vel.
 0  501.475313428
Finvars
  Finish BaseFunction
  Int 4
  Orbit True
  Vector  718508520.209 1048236763.93 -6012403972.14
  Vector  -1135.83242865 -1690.52808859 9688.38841255
  Double  3.2485863e+014
  Double  58000.2145548
  Handle Venus
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 1
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 0  0
Man. date
 0  57845.0057405
Outward vel.
 0  0
Ch. plane vel.
 0  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
View Orbit
0 0
Finvars
  Finish BaseFunction
  Int 3
  Orbit True
  Vector  -10967151017.1 2093043188.53 107071482352
  Vector  -40482.7842789 838.242727082 4361.24322123
  Double  1.32712764814e+020
  Double  58007.3802804
  Handle Sun
  Handle Venus
  Handle Mars
Select Target
 0 Mars
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 2
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 0  0
Man. date
 0  57845.0062293
Outward vel.
 0  0
Ch. plane vel.
 0  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Velocity.
 0  0
Outward angle
 5  1.08569881636
Inc. angle
 4  0.155969254209
Inherit Vel.
0 0
Eject date
 0  58007.3802804
Finvars
  Finish BaseFunction
  Int 4
  Orbit True
  Vector  5376750817.29 -302854854.968 -1979343139.76
  Vector  -4977.47084212 277.805788001 1824.22749942
  Double  4.28282991638e+013
  Double  58196.6909401
  Handle Mars
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 1
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 0  0
Man. date
 0  57845.0062597
Outward vel.
 0  0
Ch. plane vel.
 0  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
View Orbit
0 0
Finvars
  Finish BaseFunction
  Int 3
  Orbit True
  Vector  -123961731666 -1005553845.99 -192872197881
  Vector  17239.9165978 51.50412131 -7694.80220126
  Double  1.32712482783e+020
  Double  58209.1831856
  Handle Sun
  Handle Mars
  Handle Earth
Select Target
 0 Earth
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 2
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 0  0
Man. date
 0  57845.0070429
Outward vel.
 0  0
Ch. plane vel.
 0  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Velocity.
 0  0
Outward angle
 4  -2.93264288274
Inc. angle
 0  -0.120357905218
Inherit Vel.
0 0
Eject date
 0  58209.1831856
Finvars
  Finish BaseFunction
  Int 5
  Orbit True
  Vector  5534215710.66 -104954880.45 -7401198557.6
  Vector  -7331.82250913 138.499202991 9824.50179351
  Double  3.98600439969e+014
  Double  58314.7402169
  Handle Earth
  Handle NULL
  Handle NULL
Select Target
 0 None
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 2
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 0  0
Man. date
 0  57845.0070429
Outward vel.
 0  0
Ch. plane vel.
 0  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Draw Base
0 0
Finvars
  Finish BaseFunction
END_MFD

BEGIN_MFD Right
  TYPE User
  MODE TransX
END_MFD

BEGIN_SHIPS
3:DeltaGlider
  STATUS Landed Earth
  POS -117.2601388 34.0891835
  HEADING 151.05
  RCSMODE 0
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000
  NAVFREQ 0 524 84 114
  XPDR 6
  GEAR 1 1.0000
  PSNGR 2 3 4
  TRIM 1.000000
  AAP 0:0 0:0 0:0
END
END_SHIPS

BEGIN_VistaBoost
END

BEGIN_ExtMFD
END
3.
Code:
BEGIN_DESC
Abort landing on Mars, sling to Earth for total Mission Time = 676 days. Pe Vel = 13.7 km/sec.
END_DESC

BEGIN_ENVIRONMENT
  System Sol
  Date MJD 57845.0159351438
END_ENVIRONMENT

BEGIN_FOCUS
  Ship 3
END_FOCUS

BEGIN_CAMERA
  TARGET 3
  MODE Cockpit
  FOV 60.00
END_CAMERA

BEGIN_MFD Left
  TYPE User
  MODE TransX
  Ship  3
  FNumber 7
  Int 1
  Orbit True
  Vector  1064627.4729 1218480.20343 6162116.15477
  Vector  -376.925750114 -30.1289842895 71.0790041473
  Double  3.98600439969e+014
  Double  57845.0159342
  Handle Earth
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 0
Plan
0 1
Plan
0 0
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0159342
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Pe Distance
 1  7645212
Ej Orientation
 1  0
Equatorial view
0 0
Finvars
  Finish BaseFunction
  Int 2
  Orbit False
  Handle Sun
  Handle Earth
  Handle Venus
Select Target
 0 Venus
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 1
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 1
Prograde vel.
 1  0
Man. date
 1  57845.0159342
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Prograde vel.
 1  -4418.8384505
Eject date
 1  57845.8784479
Outward vel.
 1  -1269.73464853
Ch. plane vel.
 1  501.475313428
Finvars
  Finish BaseFunction
  Int 4
  Orbit True
  Vector  718509793.784 1048238292.82 -6012413195.11
  Vector  -1135.8322655 -1690.52810797 9688.38846547
  Double  3.2485863e+014
  Double  58000.2145435
  Handle Venus
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 1
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0158239
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
View Orbit
0 0
Finvars
  Finish BaseFunction
  Int 3
  Orbit True
  Vector  -10967147827.5 2093042931.1 107071482665
  Vector  -40482.6990542 838.249314462 4361.30276347
  Double  1.32712764814e+020
  Double  58007.3802801
  Handle Sun
  Handle Venus
  Handle Mars
Select Target
 0 Mars
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 2
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0158059
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Velocity.
 1  0
Outward angle
 1  1.08576657004
Inc. angle
 1  0.155936651459
Inherit Vel.
0 0
Eject date
 1  58007.3802801
Finvars
  Finish BaseFunction
  Int 4
  Orbit True
  Vector  5380574939.89 -301149090.224 -1969301859.53
  Vector  -4975.17694503 277.677541024 1825.91857973
  Double  4.28282991638e+013
  Double  58196.7224981
  Handle Mars
  Handle NULL
  Handle NULL
Select Target
 0 Escape
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 1
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0157808
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
View Orbit
0 0
Finvars
  Finish BaseFunction
  Int 3
  Orbit True
  Vector  -123887793147 -1002235590.96 -192875003533
  Vector  16173.6024678 4.49776436968 -12148.454592
  Double  1.32712482783e+020
  Double  58209.2169115
  Handle Sun
  Handle Mars
  Handle Earth
Select Target
 0 Earth
Autoplan
0 0
Plan type
0 2
Plan
0 0
Plan
0 0
Plan
0 2
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0157533
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Velocity.
 1  0
Outward angle
 6  2.44816583686
Inc. angle
 1  -0.124197629572
Inherit Vel.
0 0
Eject date
 1  58209.2169115
Finvars
  Finish BaseFunction
  Int 5
  Orbit True
  Vector  7808120592.6 164855669.485 -4941947695.63
  Vector  -6771.00584366 -138.97534577 4295.77596275
  Double  3.98600439969e+014
  Double  58509.2637189
  Handle Earth
  Handle NULL
  Handle NULL
Select Target
 0 None
Autoplan
0 0
Plan type
0 1
Plan
0 0
Plan
0 2
Plan
0 0
Select Minor
 0 None
Manoeuvre mode
0 0
Base Orbit
0 0
Prograde vel.
 1  0
Man. date
 1  57845.0157253
Outward vel.
 1  0
Ch. plane vel.
 1  0
Intercept with
0 0
Orbits to Icept
0 0
Graph projection
0 0
Scale to view
0 0
Advanced
0 0
Draw Base
0 0
Finvars
  Finish BaseFunction
END_MFD

BEGIN_MFD Right
  TYPE User
  MODE TransX
END_MFD

BEGIN_SHIPS
3:DeltaGlider
  STATUS Landed Earth
  POS -117.2601388 34.0891835
  HEADING 151.05
  RCSMODE 0
  AFCMODE 7
  PRPLEVEL 0:1.000000 1:1.000000
  NAVFREQ 0 524 84 114
  XPDR 6
  GEAR 1 1.0000
  PSNGR 2 3 4
  TRIM 1.000000
  AAP 0:0 0:0 0:0
END
END_SHIPS

BEGIN_VistaBoost
END

BEGIN_ExtMFD
END
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Old 02-13-2013, 09:22 PM   #2
perseus
Addon Developer
 
perseus's Avatar
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Hello, good scenario, but I have something unexpected when I leave the influence of the earth's gravita field, the whole plan is deleted and need new setting, this often is normal?
perseus is offline   Reply With Quote
Old 02-14-2013, 04:32 PM   #3
flytandem
Tutorial Publisher
 
flytandem's Avatar
Default

The plan and all the stages should remain. But if you are missing Venus beyond some limited amount, it will appear as though you are not heading there. Is that what you mean? Post a save (scenario) for what you are describing.
(edit) and it's normal that future slings need to be tweaked and repositioned after (actually during) every mid course correction.

Last edited by flytandem; 02-14-2013 at 04:34 PM.
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