Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Slide 33Slide 34Slide 35Slide 36Slide 37Slide 38Slide 39Slide 40Colorado Space Grant ConsortiumColorado Space Grant ConsortiumGateway To SpaceASEN / ASTR 2500Class #30Gateway To SpaceASEN / ASTR 2500Class #30T+12Today…- Announcements- One minute reports- Finish up orbits- 40 minute movieToday…- Announcements- One minute reports- Finish up orbits- 40 minute movieToday…- Announcements- One minute reports- Finish up orbits- 40 minute movieToday…- Announcements- One minute reports- Finish up orbits- 40 minute movieAnnouncements…- Grades are posted – please review- Design Expo forms due today- Homework #5 due today at 4:00 PM via email- Final Presentation Template is onlineDesign Expo Comments…- All team members present for judging - Shifts during set up and public viewing- Two people at the booth at any one time- Highly recommend all teams present when I stop by (will be done during judging time)Final Presentation Plan…- Presentations start at 8:00 AM on 12/01/09- Presentations conclude at 10:45 AM on 12/01/09- Presentations due 7:00 AM on 12/01/09- Final report still due on 12/05/09 via email and one paper copy handed in at Expo- No class on 12/03/09- No final exam but…- You still need to show up on Monday, December 14, 2009 at 7:30 PM for Team Evaluation - 7:45 to whenever is extra creditRest of the Semester…- No class next week- 12/01/09 Presentations- 12/03/09 NO Class- 12/08/09 Guest lecture- 12/10/09 Last Class - Hardware turn-in, class evaluations, class recap- 12/14/09 Final Exam – Discovery Learning Center 1B70One Minute Reports…- If we don’t collect data, do we lose points?- When is our video due and is there a max time limit?- Why did previous teams get 1,000 grams?- When do you think humans will reach Mars?- Which would win the fight: Star Wars Star Destoyer or USS Enterprise?One Minute Reports…- Why was the space glider cancelled?- What motivates people to invest in space development?- How often are shuttle launches?- Why did Russia cancel their shuttle program?- Is the space elevator a real possibility?- What does the Tesla car look like?One Minute Reports…- How would you get to polar orbit from Kennedy?- What are the metal rods sticking out of the landing pads on the lunar lander?One Minute Reports…- What project do you think has been your greatest achievement thus far?- What is the name of the series and is worth watching?- How many people total worked on the LEM project?- What Apollo mission landed first on the moon?- How many payloads have landed in a lake?- How do we get STK?One Minute Reports…- What are the equations to convert the sensor readings?- If we reverse or slow down in order to go to a lower orbit, what must we do in order to prevent spiralling or crashing in the Earth?- How do you adjust the inclination in orbit and on the ground?- Difference between geostationary and geosynchronous?How well do you understand Hohmann Transfers? 123• 1 to 2?• 2 to 3?• 3 to 1? • 1 to 3?Changing Orbits:Also something called “Fast Transfer”• It is more direct and quicker• However it takes more fuel• V1 and V2 are much biggerFrom Earth Orbit to the Moon:• Same as changing orbits but....- At apogee you don’t have empty space- Instead, you have a large and massive object• Gravity from this object can act as a V against your spacecraft• When going to the Moon the following could happen:1) Gravity will cause your spacecraft to crash into the surface2) Gravity will cause your spacecraft to zip off into space for a long timeGetting to the Moon:•Gravity Assistv2v1Apollo XIII:Apollo XIII:Apollo XIII:Apollo XIII:So...• One switch controls the light bulb• Light bulb is on 2nd floor• Can’t see it unless you go upstairs• Can flip switches as many times• Can go upstairs once• Which switch is it?• If you could go up twice, how would you do it? • What does a light bulb do?• Besides light?• What about heat?To the Moon for Money:To the Moon for Money:To the Moon for Money:Earth to L1:Circular Orbit:Earth to Mars:Mars OrbitEarth OrbitTransfer OrbitInitial OrbitFinal Orbitv2v1Earth to Beyond:Say you are in a 250 km orbit...Orbital Velocity:Velocity on parabolic (a=escape trajectory:V needed:V will not put you in a orbit, you will escape the Earth’sgravity never to come back sec 75.7 kmviv2 rvesc  2 * 398600.4 (250  6378.14)vesc  10.97 kmsecvesc  3.22 kmsecQuestionsQuestionsWeather Matters:Weather Matters:Weather Matters:Weather Matters:Weather