@fighterace0 40 degrees is the approximate launch trajectory needed to intercept the orbital path of the target spacecraft (in this case the ISS). Search for my video "Orbiter Launch Azimuth Tutorial" for a method to pre-determine the launch trajectory. Rinc stands for "Relative inclination". This is simply the shuttles orbital path relative to the ISS orbital path. The closer the Rinc value is to zero the more aligned the two orbital paths are.
@fighterace0 Great point! The only thing I can come up with is that the MFD is displaying the ISS orbital inclination relative to the sun (or to the ecliptic) rather than the earth. The reason I think this may be is because when I subtracted the earths axial tilt relative to the ecliptic (23.5) from the displayed ISS inclination (74.53) I come up with =51.03 degrees. I dont know why it would be displayed relative to the sun as I have chosen the earth as the reference. Maybe a bug in orbiter?
@AztroNut66 lol wow well at least I'm getting to the bottom of this! In that case where do you find the 23.5 (axial tilt relative to ecliptic). If I look at object info the value for earth's "obliquity of ecliptic" is 23.44. Is this the value I'm looking for?
@fighterace0 Yeah. I guess just subtract 23.44 degrees from the displayed inclination... as it appears the MFD is displaying relative to the ecliptic.
@fighterace0 Just a short simple example of relative inclination: Imagine your driving down the road approaching a crossroads intersection and you see a vehicle on the crossing road run a stop sign in front of you moving from right to left . His direction of travel Relative to yours would be 90 degrees. If that same car were traveling behind you on the same road you are on then your relative direction of travel to that car would be zero degrees.
@sgtmcguckin16 Glad it helped out. If I can ask, what were the confusing parts?...maybe I could do a better job on the tutorial :) By the way...I really enjoy your musical style on the guitar...just superb!
@AztroNut66 It was really just some of the words you used to describe some of the functions! I had to find out what they meant. But this really did help me me! I'm enjoying space now! :P & Thank You! :) I really appreciate the kind words on my music! Makes me feel proud :P
launch azimuth for a shuttle-iss mission is typically around 44 degrees.
fvgdfbdokd 2 months ago
still it doesnt tell you HOW to launch. like how do you hit the throttle? do you need a flight stick?
cbradley1391 3 months ago
why 40 degrees? and what are you watching Rinc for?
fighterace0 4 months ago
@fighterace0 40 degrees is the approximate launch trajectory needed to intercept the orbital path of the target spacecraft (in this case the ISS). Search for my video "Orbiter Launch Azimuth Tutorial" for a method to pre-determine the launch trajectory. Rinc stands for "Relative inclination". This is simply the shuttles orbital path relative to the ISS orbital path. The closer the Rinc value is to zero the more aligned the two orbital paths are.
AztroNut66 4 months ago
@AztroNut66 Ok So I thought I figured it out. But when I went to fly it I feel like my RInc was almost opposite of ISS.
In this video your lat is 28 and ISS inc is 75, right? So that should put your azimuth at about 17 or 18 right?
So then where's the 40 degrees come from? I believe I'm calculating right, am I pulling the wrong ISS Inc?
In your other video you list ISS orbital inclination at 51.6 degrees. How can that be so? Your MFD shows 75, that shouldn't change right?
fighterace0 4 months ago
@fighterace0 Great point! The only thing I can come up with is that the MFD is displaying the ISS orbital inclination relative to the sun (or to the ecliptic) rather than the earth. The reason I think this may be is because when I subtracted the earths axial tilt relative to the ecliptic (23.5) from the displayed ISS inclination (74.53) I come up with =51.03 degrees. I dont know why it would be displayed relative to the sun as I have chosen the earth as the reference. Maybe a bug in orbiter?
AztroNut66 4 months ago
@AztroNut66 lol wow well at least I'm getting to the bottom of this! In that case where do you find the 23.5 (axial tilt relative to ecliptic). If I look at object info the value for earth's "obliquity of ecliptic" is 23.44. Is this the value I'm looking for?
fighterace0 4 months ago
@fighterace0 Yeah. I guess just subtract 23.44 degrees from the displayed inclination... as it appears the MFD is displaying relative to the ecliptic.
AztroNut66 3 months ago
@fighterace0 Just a short simple example of relative inclination: Imagine your driving down the road approaching a crossroads intersection and you see a vehicle on the crossing road run a stop sign in front of you moving from right to left . His direction of travel Relative to yours would be 90 degrees. If that same car were traveling behind you on the same road you are on then your relative direction of travel to that car would be zero degrees.
AztroNut66 4 months ago
@AztroNut66 Thanks for the explanations! I'm new to all this. I thought I should just take off due east but this helps with fuel burn I imagine.
fighterace0 4 months ago
@fighterace0 You're welcome:)
AztroNut66 4 months ago
Has ever a shuttle been launched in manual controls?
SF1010 7 months ago
@SF1010 Not to my knowledge...Perhaps in the simulator or an abort flight :)
AztroNut66 7 months ago
This helped alot! Got very confusing for me. But after an hour it made sense :P Thanks
sgtmcguckin16 8 months ago
@sgtmcguckin16 Glad it helped out. If I can ask, what were the confusing parts?...maybe I could do a better job on the tutorial :) By the way...I really enjoy your musical style on the guitar...just superb!
AztroNut66 8 months ago
@AztroNut66 It was really just some of the words you used to describe some of the functions! I had to find out what they meant. But this really did help me me! I'm enjoying space now! :P & Thank You! :) I really appreciate the kind words on my music! Makes me feel proud :P
sgtmcguckin16 8 months ago
@sgtmcguckin16 You're welcome. Well deserved!
AztroNut66 8 months ago
excelent !
TheAvigdor 9 months ago
@TheAvigdor Thanks alot!
AztroNut66 9 months ago
this is the best tutorial so far ive seen well done
lordoftheriffs79 1 year ago
@lordoftheriffs79 Thanks alot! I was thinking I should have narrated it..Next time maybe...
AztroNut66 1 year ago