Timeline for Why was Telstar 1 put in a 952 x 5933, 2.6 hour 44.8° MEO orbit?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Jul 22 at 3:21 | comment | added | uhoh | Also somewhat related to Telstar 1's launch trajectory and its challenges is your answer to Which launch was the first to use a dogleg maneuver? | |
| Jul 22 at 3:19 | vote | accept | uhoh | ||
| Dec 11, 2021 at 15:20 | comment | added | Organic Marble | @uhoh it appears that Telstar 1 flew a dogleg profile "The desired higher inclination of 45° was attained by yawing the second and third stages to the south of the initially established ascent trajectory plane when the vehicle had arrived at a point where the range was clear to the south. Since the energy imparted to a spacecraft is reduced by such yawing, the final apogee or perigee or both will be reduced ." | |
| Dec 10, 2021 at 22:05 | comment | added | Organic Marble | Thanks! I missed IV. It was marked out in the galley-proofers writing, so I thought it didn't exist. | |
| Dec 10, 2021 at 22:02 | comment | added | uhoh | Four! I, II, III, IV | |
| Dec 10, 2021 at 21:42 | comment | added | Organic Marble | There is a longer discussion of the orbital choice in the 2nd chapter, but it boils down to what I posted. BTW, there is a volume 3 as well. ntrs.nasa.gov/api/citations/19640001170/downloads/… | |
| Dec 10, 2021 at 21:39 | comment | added | uhoh | update: Oh I see what you mean! You've linked to volume I above and volume II here and both are just chock-full of detailed discussions and photos! | |
| Dec 10, 2021 at 21:28 | comment | added | uhoh | Perfect! It's 5:30 AM, I got up to check for clear skies to see comet Leonard but no luck so I've got some nice, quiet reading time ahead of me this morning. | |
| Dec 10, 2021 at 21:24 | comment | added | Organic Marble | @uhoh you'd probably enjoy a read through SP-32. | |
| Dec 10, 2021 at 21:23 | comment | added | uhoh | I see, not just the apogee's altitude, but its location above 45° north latitude between the two "customers". And since it was essentially a short-lived demonstration/test, no need to worry about managing precession like the Molnya orbit. | |
| Dec 10, 2021 at 17:12 | history | answered | Organic Marble | CC BY-SA 4.0 |