1 / 39

Prince William Composite Squadron Col M. T. McNeely

CIVIL AIR PATROL PRESENTS The CAP-STK Aerospace Education Program INTRO TO SPACE COURSE. Presentation for AGI Users Conference . Prince William Composite Squadron Col M. T. McNeely. …using AGI’s Satellite Tool Kit. Why is this important?.

quintana
Download Presentation

Prince William Composite Squadron Col M. T. McNeely

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CIVIL AIR PATROL PRESENTS The CAP-STK Aerospace Education Program INTRO TO SPACECOURSE Presentation for AGI Users Conference Prince William Composite Squadron Col M. T. McNeely …using AGI’s Satellite Tool Kit

  2. Why is this important? • Intro to Space will enhance CAP Aerospace Education • Program • Broaden cadet’s knowledge of Space and Satellite operations • Cadet will gain an understanding of a variety of • Space fundamentals • Orbital Mechanics • Types of Orbits • Placing a Satellite in Orbit • Conducting Satellite Operations • Stimulate interest in the ‘Final Frontier’: THE FUTURE!!

  3. ORBITAL MECHANICSLesson Plan 1 - Part 1 • Origins • Physical Laws • Requirements for Injection • Classifications of Orbits • Coordinate Reference Systems • Orbital Elements

  4. PHYSICAL LAWSKepler’s 2nd Law: Law of Equal Areas

  5. T4 T3 T5 T2 A4 A3 T1 A5 A2 A1 T6 A6 PHYSICAL LAWSKepler’s 2nd Law: Law of Equal Areas The line joining the planet to the center of the sun sweeps out equal areas in equal times

  6. F F PHYSICAL LAWSNewton’s 2nd Law: Law of Momentum • Change in momentum is proportional to and in the direction of the force applied • Momentum equals mass x velocity • Change in momentum gives: F = ma

  7. INJECTION REQUIREMENTSSpeed 17,500 mi/hr 100 miles

  8. ORBITAL ELEMENTSKeplerian Elements • Semi-Major Axis (Size) • Eccentricity (Shape) • Inclination • Right Ascension • Argument of Perigee • Epoch Time (Location within orbit) • True Anomaly (Orientation)

  9. ORBIT CLASSIFICATIONShape (Conic Sections) Circle Ellipse

  10. e = 0.75 e = .45 e = 0 ORBIT CLASSIFICATIONSEccentricity Eccentricity = c/a

  11. ORBITAL ELEMENTSKeplerian Elements: Inclination Equatorial Plane Inclination ( i ) Orbital Plane

  12. i Line of Nodes First Point of Aries () Right Ascension of the Ascending Node () ORBITAL ELEMENTSKeplerian Elements: Right Ascension

  13. i Line of Nodes  ORBITAL ELEMENTSKeplerian Elements: Argument of Perigee Argument of Perigee () 

  14. ORBITAL MECHANICSLesson Plan 1 - Part 2 • Ground Tracks • Perturbations • Launch Considerations • Orbital Maneuvers • De-orbit/Decay

  15. Ground TracksWestward Regression - Earth rotates east under a satellite => satellite appears to walk west - Earth rotates 360 degrees in 24 hours (15 degrees per hour)

  16. Ground TracksWestward Regression C B A -120 -90 -60 -30 0 30 60 A - time zero B - after one orbit C - after two orbits

  17. Ground tracks Inclination 60 30 45N 0 30 60 45S Inclination = 45 degrees Eccentricity ~ 0

  18. Ground TracksEccentricity Ground Track for Molnyia orbit eccentricity = .7252

  19. PERTURBATIONS • Definition • A disturbance in the regular motion of a satellite • Types • Gravitational • Atmospheric Drag • Third Body Effects • Solar Wind/Radiation Effects • Electro-magnetic

  20. PERTURBATIONSGravitational: Libration • Ellipticity of the Earth causes gravity wells and hills • Stable points: 75E and 105W -- Himalayas and Rocky Mountains • Unstable points: 165E and 5W -- Marshall Islands and Portugal • Drives the requirement for stationkeeping

  21. PERTURBATIONSElectro-Magnetic • Interaction between the Earth’s magnetic field and the satellite’s electro-magnetic field results in magnetic drag

  22. LAUNCH CONSIDERATIONSLaunch Windows • The period of time during which a satellite can be launched directly into a specific orbital plane from a specific launch site • Window duration driven by safety, fuel requirements, desired injection points, etc. • Window is centered around optimal launch time

  23. DE-ORBIT/DECAY • De-Orbit is the controlled re-entry of a satellite to a specific location • Used for the recovery of payload • Manned missions • Decay is uncontrolled re-entry • Potential impact anywhere along ground track • Re-entry Assessment (by Cheyenne Mountain)

  24. TYPES OF ORBITSLesson Plan 2 • Types of Satellites and Missions • Satellites vs Orbits • Use STK to Evaluate Orbit Type vs Mission Requirement

  25. TYPES OF ORBITS -Uses of Satellites • Daily Uses of Satellites • Big Picture • Affects of Altitude

  26. TYPES OF ORBITS -Uses of Satellites GPS Receiver Used in Search and Rescue Missions

  27. TYPES OF ORBITS • LEO • MEO • HEO • GEO

  28. PLACING A SATELLITE IN ORBITLesson Plan 3 • How Satellites are Launched • Location Advantages of Two Primary Launch Sites • Purpose of a Hohmann Transfer • Use STK to Demonstrate Concepts

  29. PLACING SATELLITES IN ORBIT • Booster Types DELTA II

  30. PLACING SATELLITES IN ORBIT • Booster Types ATLAS 2AS

  31. PLACING SATELLITES IN ORBIT • Booster Types TITAN IV

  32. PLACING SATELLITES IN ORBIT • Booster Types TAURUS

  33. PLACING SATELLITES IN ORBIT • Booster Types The SHUTTLE BOOSTER

  34. PLACING SATELLITES IN ORBIT • Booster Types PEGASUS

  35. PLACING SATELLITES IN ORBIT • Launch Constraints

  36. CONDUCTING SATELLITE OPERATIONSLesson Plan 4 • Basic Elements of a Space System • Space System Functions • Access • STK Demonstrations

  37. SATELLITE OPERATIONSFUNCTIONS • GPS Example

  38. EXERCISESLesson Plan 5 • Apply Knowledge Concepts to Problems and Formulate Solutions • Demonstrate with STK

  39. INTRO TO SPACESUMMARY • Classroom Presentations using Powerpoint • Demonstrate with STK • Let’s Demo !! The world of Space Operations awaits you!!

More Related