morehead state university morehead, ky prof. bob twiggs rjtwiggs@gmail
DESCRIPTION
Understanding Orbits Chapter 4-9. Morehead State University Morehead, KY Prof. Bob Twiggs [email protected]. Click here for audio comment on slides. . Page 103. SSE-120. Understanding Orbits. Page 105-6. SSE-120. Understanding Orbits. Page 105-6. SSE-120. Understanding Orbits. - PowerPoint PPT PresentationTRANSCRIPT
Morehead State UniversityMorehead, KY
Prof. Bob [email protected]
Click here for audio comment on slides.
Understanding OrbitsChapter 4-9
1
Page 103SSE-1202
SSE-120
Understanding Orbits
Page 105-63
SSE-120
Understanding Orbits
Page 105-64
SSE-120
Understanding Orbits
Page 155-1565
SSE-120
Understanding Orbits
Page 157
Eccentricity
6
SSE-120
Understanding Orbits
Page 1597
SSE-120
Understanding Orbits
Page 1648
SSE-120
Understanding Orbits
Page 2739
SSE-120
Understanding Orbits
Page 27310
North Pole to the South Pole (the shortest diameter) is approximately 12,714 km.
The equatorial diameter (the longest diameter) is approximately 12,756 km.
SSE-120
Understanding Orbits
Page 27311
What about gravitational pull on the satellite in the orbit?
Would it be uniform all around the orbit?
SSE-120
Understanding Orbits
Page 27712
SSE-120
Understanding Orbits
Page 17913
SSE-120
Understanding Orbits
Page 18014
SSE-120
Understanding Orbits
Page 18115
What determines the velocity of spacecraft in a circular orbit?
What about gravitational pull on the satellite in the orbit?
Would it be uniform all around the orbit?
v
Fg
Fc
Velocity of spacecraft
Altitude: given
Orbit Period
Vcir = 631.3481 r-1/2 km/sec r - is from center of the earth – 6378 km
Vesc = 892.8611 r-1/2 km/sec
Circumference = 2pr
Orbit
Time to orbit = distance/velocity
Orbit Period = Time to orbit (minutes)
km/s mi/hourconvert
X (km/s) x 60s/m x 60m/hour x (1/1.6) mi/km = X (km/s) x 2250 mi/hour
V = (7.739 km/s) x 2250 mi/hour = 17,142 mi/hour
What is ISS altitude?
Spacecraft Orbital Velocity and Orbit Period -2
= 17,142 mi/hour
h = (150) (1.852) = 278 km
SSE-120
Understanding Orbits
16
LEO
Page 184SSE-120
Understanding Orbits
Velocity of spacecraft
Orbit Period
Vcir = 631.3481 r-1/2 km/sec r - is from center of the earth – 6378 km Vesc = 892.8611 r-1/2 km/sec
Circumference = 2prTime to orbit = distance/velocity
Orbit Period = Time to orbit (minutes)
Altitude: given
Page 184SSE-120
Understanding Orbits
Page 184SSE-120
Understanding Orbits
Page 203SSE-120
Understanding Orbits
Page 272SSE-120
Understanding Orbits
Page 273SSE-120
Understanding Orbits
Page 275SSE-120
Understanding Orbits
Sun-synchronous LEO orbit
Page 277SSE-120
Understanding Orbits
Page 278SSE-120
Understanding Orbits
Perturbation
Ascending nodePlane changes
Orbit periodOrbital Velocity
Page 278SSE-120
Understanding Orbits
Page 278SSE-120
Understanding Orbits
Page 308SSE-120
Understanding Orbits
Page 308SSE-120
Understanding Orbits
Page 315SSE-120
Understanding Orbits
Page 315SSE-120
Understanding Orbits
