MAE 5495: Lecture 3Trajectories, Time, Launch

Windows and Launch Velocity

Dr. Andrew Ketsdever

UCCS

Sidereal Time

• 1 Sidereal Day = 23 hrs. 56 min. 04 sec• The Earth rotates 360.986º in a solar day

Geocentric Equatorial Coordinate System

Reference: Understanding Space by J.J. Sellers, W.J. Astore, R.B. Giffen, W.J. Larson

Launch Windows

Reference: Understanding Space by J.J. Sellers, W.J. Astore, R.B. Giffen, W.J. Larson

Launch Windows

Reference: Understanding Space by J.J. Sellers, W.J. Astore, R.B. Giffen, W.J. Larson

Launch Windows

Reference: Understanding Space by J.J. Sellers, W.J. Astore, R.B. Giffen, W.J. Larson

Tropocentric Horizon Coordinate System

Reference: Understanding Space by J.J. Sellers, W.J. Astore, R.B. Giffen, W.J. Larson