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| − | -- Lua script for chapter 2 of Go Play in Space
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| − | --
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| − |
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| − | -- Author: David Murley
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| − |
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| − | -- Date: 7/01/2019
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| − |
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| − | -- Version: 1.1
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| − |
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| − | --
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| − |
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| − | --
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| − |
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| − | term.out('Script invoked')
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| − |
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| − | -- Get access to the Delta Gliders GL-01 and GL-02. With the interface handles
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| − |
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| − | -- obtained, access to various controls and flight data are acquired.
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| − |
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| − |
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| − | hGL1=vessel.get_interface('GL-01')
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| − | hGL2=vessel.get_interface('GL-02')
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| − |
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| − | -- Wait until vessels are docked before continuing with script
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| − |
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| − |
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| − | term.out ('Waiting until vessels are docked before')
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| − | term.out (' executing remainder of script')
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| − | continue = true
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| − | hDckPort = hGL1:get_dockhandle(0)
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| − | continue=true
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| − | while continue do
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| − | hDckStatus=hGL1:get_dockstatus(hDckPort)
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| − | if hDckStatus ~= nil then
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| − | continue = false
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| − | else
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| − | proc.wait_simdt(5)
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| − | end
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| − | end
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| − |
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| − | -- Kill Rotation
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| − |
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| − |
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| − | term.out('Kill Rotation')
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| − | hGL1:set_navmode(NAVMODE.KILLROT)
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| − | proc.wait_simdt(10)
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| − |
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| − | -- Undock
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| − |
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| − | term.out('Undock')
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| − | hGL1:undock(ALLDOCKS)
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| − |
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| − | -- Set RCS mode on GL-01 to Translation
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| − |
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| − | term.out('Set RCS mode to translate.')
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| − | hGL1:set_rcsmode(RCSMODE.LIN)
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| − |
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| − | -- Thrust away from GL-02. The resulting distance from GL-02 is about 35 meters.
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| − |
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| − | term.out('Separation of GL-01 and GL-02 to +/-35 meters')
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| − | -- oapi.set_tacc(10)
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| − | thrstGrpHdl1=hGL1:get_thrustergrouphandle(THGROUP.ATT_BACK)
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| − | hGL1:set_thrustergrouplevel(THGROUP.ATT_BACK,.1)
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| − | proc.wait_simdt(11.237)
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| − | hGL1:set_thrustergrouplevel(THGROUP.ATT_BACK,0)
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| − | proc.wait_simdt(52.777)
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| − | thrstGrpHdl2=hGL1:get_thrustergrouphandle(THGROUP.ATT_FORWARD)
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| − | hGL1:set_thrustergrouplevel(THGROUP.ATT_FORWARD,.1)
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| − | proc.wait_simdt(18.733)
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| − | hGL1:set_thrustergrouplevel(THGROUP.ATT_FORWARD,0)
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| − | -- oapi.set_tacc(1)
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| − | term.out('Separation completed.')
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| − |
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| − | -- Set the prograde autopilot for both vessels to on.
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| − |
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| − | term.out('Set prograde autopilot for both vessels.')
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| − | hGL1:set_navmode(NAVMODE.PROGRADE)
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| − | hGL2:set_navmode(NAVMODE.PROGRADE)
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| − | proc.wait_simdt(25)
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| − |
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| − | -- The following 14 lines set up the annotations that are used to display
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| − | -- time to apoapsis for both vessels
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| − |
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| − | hApT1Label = oapi.create_annotation()
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| − | hApT1Label:set_pos(0.7,0.7,1,1)
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| − | hApT1Label:set_colour({r=1, g=0.7, b=0.3})
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| − | hApT1Label:set_text ('ApT (GL-01): ')
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| − |
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| − | hApT1 = oapi.create_annotation()
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| − | hApT1:set_pos(0.8,0.7,1,1)
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| − | hApT1:set_colour({r=1, g=0.7, b=0.3})
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| − |
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| − | hApT2Label = oapi.create_annotation()
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| − | hApT2Label:set_pos(0.7,0.75,1,1)
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| − | hApT2Label:set_colour({r=1, g=0.7, b=0.3})
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| − | hApT2Label:set_text ('ApT (GL-02): ')
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| − |
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| − | hApT2 = oapi.create_annotation()
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| − | hApT2:set_pos(0.8,0.75,1,1)
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| − | hApT2:set_colour({r=1, g=0.7, b=0.3})
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| − |
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| − | -- Wait until +/- 20 seconds before apoapsis, then slow time acceleration to 1x.
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| − | -- Ignition of main engines on both vessels occurs around +/- 10 seconds before
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| − | -- apoapsis. Time acceleration during the waiting period is set to 100x to
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| − | -- reduce waiting time for those who are easily bored.
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| − |
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| − | term.out ('Wait until +/- 10 seconds from aoapis. Then fire')
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| − | term.out (' main engines to stabilize orbit')
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| − | oapi.set_tacc(100)
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| − | continue = true
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| − | while continue do
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| − | el,op = hGL1:get_elementsex()
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| − | TimeToApoapsis= op.ApT
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| − | hApT1:set_text(TimeToApoapsis)
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| − | el,op=hGL2:get_elementsex()
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| − | TimeToAposis=op.ApT
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| − | hApT2:set_text(TimeToApoapsis)
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| − | if TimeToApoapsis < 20 then
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| − | continue=false
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| − | end
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| − | proc.wait_simdt(1)
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| − | end
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| − | oapi.set_tacc(1)
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| − |
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| − |
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| − | -- Track time to apoapsis from time=+/-20 sec in 1x time.
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| − |
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| − | continue=true
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| − | while continue do
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| − | el,op = hGL1:get_elementsex()
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| − | TimeToApoapsis1 =op.ApT
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| − | hApT1:set_text(TimeToApoapsis1)
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| − | el,op = hGL2:get_elementsex()
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| − | TimeToApoapsis2=op.ApT
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| − | hApT2:set_text(TimeToApoapsis2)
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| − | if TimeToApoapsis1 <= 10 then
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| − | continue=false
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| − | oapi.del_annotation(hApT1)
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| − | oapi.del_annotation(hApT1Label)
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| − | oapi.del_annotation(hApT2)
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| − | oapi.del_annotation(hApT2Label)
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| − | else
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| − | proc.wait_simdt(1)
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| − | end
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| − | end
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| − |
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| − | -- Set up annotations to show orbit eccentricities
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| − |
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| − | hEcc1Label = oapi.create_annotation()
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| − | hEcc1Label:set_pos(0.7,0.7,1,1)
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| − | hEcc1Label:set_colour({r=1, g=0.7, b=0.3})
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| − | hEcc1Label:set_text ('Ecc (GL-01): ')
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| − |
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| − | hEcc1 = oapi.create_annotation()
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| − | hEcc1:set_pos(0.8,0.7,1,1)
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| − | hEcc1:set_colour({r=1, g=0.7, b=0.3})
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| − |
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| − | hEcc2Label = oapi.create_annotation()
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| − | hEcc2Label:set_pos(0.7,0.75,1,1)
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| − | hEcc2Label:set_colour({r=1, g=0.7, b=0.3})
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| − | hEcc2Label:set_text ('Ecc (GL-02): ')
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| − |
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| − | hEcc2 = oapi.create_annotation()
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| − | hEcc2:set_pos(0.8,0.75,1,1)
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| − | hEcc2:set_colour({r=1, g=0.7, b=0.3})
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| − |
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| − | -- Stabilize orbits
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| − |
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| − | term.out('Start Stabilization of Orbits')
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| − | hGL1:set_thrustergrouplevel(THGROUP.MAIN, 1)
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| − | hGL2:set_thrustergrouplevel(THGROUP.MAIN, 1)
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| − | continue1=true
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| − | continue2 = true
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| − | while continue1 or continue2 do
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| − | el=hGL1:get_elements()
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| − | e1 = el.e
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| − | hEcc1:set_text(e1)
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| − | if e1 <= .005 then
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| − | hGL1:set_thrustergrouplevel (THGROUP.MAIN, 0)
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| − | continue1 = false
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| − | end
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| − | el = hGL2:get_elements()
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| − | e2 = el.e
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| − | hEcc2:set_text(e2)
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| − | if e2 <= .005 then
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| − | hGL2:set_thrustergrouplevel (THGROUP.MAIN, 0)
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| − | continue2 = false
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| − | end
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| − | proc.wait_simdt(1)
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| − | end
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| − | term.out ('Orbits stabilized.')
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| − | term.out ('')
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| − | term.out ('')
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| − |
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| − | -- Wait a few seconds and then delete eccentricity annotations
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| − |
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| − | proc.wait_simdt(10)
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| − | oapi.del_annotation(hEcc1)
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| − | oapi.del_annotation(hEcc1Label)
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| − | oapi.del_annotation(hEcc2)
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| − | oapi.del_annotation(hEcc2Label)
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| − |
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| − |
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| − |
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| − | term.out ('End Script')
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