Question 4
6.999 / 7 points
___
size___
___
semimajor___ ___
axis___
Question 5
7 / 7 points
During liftoff, a launch vehicle goes through four distinct phases on its way from the
pad to its orbit. Name these 4 phases.
Question 6
0 / 7 points
If the right ascension of the ascending node = 45 deg, what is LWST? If the local time
is 1200, how long must we wait until the next launch opportunity, assuming there is
only one opportunity per day?
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Launch azimuth
Right ascension of the ascending node
Inclination auxiliary angle
Launch site latitude
Specific mechanical energy changes an orbit's or
The 4 Phases are:
1. Vertical Ascent
2. Pitch Over
3. Gravity Turn
4. Vacuum Phase
The LWST is 45 degrees. We assume there is one opportunity per day and the RAAN
is 45 degrees, the next launch opportunity is happening at the same time as the
current local time 1200. There is no need to wait, the next launch opportunity is
currently happening.
LWST = 45 degrees + 90 degrees= 135degrees
135degrees divided by 15 degrees per hour = 0900 hours
