Babe Ruth, on 30 April 2012 - 03:39 PM, said:
Checking public information at NASA website, STS 41G, the flight in question in this thread, was launched with a northeast (57 degree) inclination, which determines that its orbit would have placed it over Russia.
Most launch inclinations are southeast, this one was northeast.
It sounds like you're having some difficulty with "inclinations"...
Prior to missions to Mir and ISS. the typical inclinations targeted for launch were around 30 degrees. This launch trajectory results in and orbit that goes around the earth, and as the Earth rotates below the orbiting Shuttle, the "groundtrack" will cover the Earth in a belt from ~30N to 30S latitude. Launching southeast will not significantly change this.
The "space station" launches to Mir and ISS (which Challenger never undertook) required a much higher inclination, 48 degrees or so (Russian launch sites are high latitude). This required more energy, due to both the higher inclination and the higher target altitude.
So in general there is no "southeast" or "northeast" inclinations...just initial launch vectors that result in a given orbital inclination. There would be no operational reason to launch southeast that I know of (at least from KSC).
edit...I fouled up, it would appear that the Challenger flight was indeed a higher inclination orbit as stated. This would be launched in a more northeasterly direction (much as with the ISS flights) vs the more easterly launches for lower inclination missions. My error. Nonetheless, they never launched southeast.
Edited by mrbusdriver, 01 May 2012 - 02:12 AM.