LEO-lunar transfer

From OrbiterWiki
Revision as of 01:42, 4 October 2007 by 193.166.3.176 (talk)
Jump to navigation Jump to search

Foto viaggio sharm el sheikh Job espresso Auto microcar Immagini melita Ww trenitalia it Abbigliamento etnies Gran casa vicenza La mia trans Bob dylan Bob sinclair Scuola di danza torino Piscina legno Uomo nudo foto Guadagnare soldo sito Scarpa donna hogan Sms messaggio telefonino Valore riferimento bilirubina Abbattere costo stampa fotografia Sex free Escort grasse Stampa digitale fotografica Auto con motore a scoppio Ministero delle finanza La storia del vino francese Mature puttane Ddgirls Aumento linfocite Nave snav Giochi di societa Carmen di pietro Lavoro per psicologi Arte marziale Bikkembergs shoes Vecchie inculate Telaio titanio Carta stradale croazia Vecchie grasse porche Foto amatoriali porno Cartina geografica italia Giochi hentay Volo per lione Leonessa Ragazze bionde Dvd vergine prezzo Melita toniolo nuda calendari foto Hotel stoccarda Incontri friuli Rifondazione comunista it Confronto auto assicurazione california Giochi preziosi canta Cerchio Traduzione italiano inglese Citta capo Cuck italiani Varicella adulto Mozzilla Hotel malcesine Diavolita foto Scultura brindisi Video lesbo gratis Viaggi lastminute toscana Professione architetto it Cryogenteam sottoveste Dragombol z Very young teen lesbo Sclerosi multipla figlio Racconti erotici illustrati gratis Consolato italiano londra Ceramica dolomite Giochi sexi free Hotel favara Creampies asshole Massaggiatrice cinese Celebrita italiane fakes Tamagotchi Ciondolo egizi Peeing girl pissing gallery Stupidexe Hantai gratis Pornostar bionde Tatuaggio gabbiano Kazaa lite Gurs pa cnr it Lido di jesolo Porto sant elpidio Osteria chiocciola cuneo Kristina fey film Ainette Metallico Grosse tettone Fottere Poesia a mamma e papa San benedetto del tronto Troie sexi Testi nino fiorello Conto arancio Elettrode elettrostimolatore compex Fumetti naruto xxx Gay sesso sex Video porno casalinghi agriturismo lombardia albergo mentone francia alberobello hotel philips 170s6fb black cittadinanz ericsson k700 amleto riassunto violenza per una giovane water of love dire street www kings of convinience it amber evans bikinibikini mojarras arnone snc amatoriali catania paola barale nuda www chivu com kimono da uomo albergo ibiza camera vimodrone calendario 2007 melita toniolo vite strozzate sabrina ferilli anabolic steroids tv color lcd 7 la password di icooloader annunci sex affitto stanza milano scooter usato mantova villa ada posse testi canzoni mappoint 2004 emarse.cn albergo como lettrix 18enni troie assicurazione barcellona pozzo gotto gruppi sanguigni top model per uccidere autoricambi renault maxtor onetouch ii 300gb firewire usb best tette cutbit.cn albergo stoccolma offerta speciali stampanti hp a colori gragnaniello testi programmi enalotto atlantis isdn pci emarse.cn iceberg fluid paris hilton video amico mio chat ricami indiani peter pan dvd allison nuoro lukyn.cn lesbeans illusions notebook acer 3503 dmc fz2 panasonic alessandra ferro stampante dvd printable cutbit.cn crack empire earth fly girl cassa professionale amplificate www peugeut vanessa cerezo agriturismo piu alto trentino oo de lally nokia 6680 blue emarse.cn aituoipiedi golden point srl alleanza assicurazione www tnt it mitac mio 168 europa lukyn.cn registratore vocale mp3 gb barca usata aprilia marittima agriturismo liguria vacanza adidas x country air mesh albergo usa new york commento di ed e subito sera di salvato amatoriali internazionali sesso video alberto sordi audio dragostea din tel usher feat alicia keys agriturismo la fenice girl siena masha star jetflash mp3 cavallo pazzo le pagine di sexi rom varia super nintendo adriana sage mistero pietra home cinema european concert 2000 server dedicato linux bl 4c animalsex free soma mou So you're in low Earth orbit, in a gassed up Delta-glider. From here you want get to the Moon above. Here's how.

Align orbital planes

First thing you need to do is line up (align) your orbital plane with the Moon's. Bring up the orbital alignment MFD on either screen (Shift A). Then on that MFD, target (Shift T) the Moon. This will bring up a display you probably don't understand. There is a circle with two lines on it, and some numbers, as well as a box that says 'kill thrust'.

The line that extends out from the center of the circle in only one direction is your position in your orbit. The longer line that bisects the circle is where your orbit intersects with the orbital plane you're aiming to align with. These are the regions where you want to change your orbital plane. The numbers along the left side of the display indicate how far your orbit is from being aligned with that of the target.

What you do is wait for your position in your orbit to get near one of the orbital intersections mentioned earlier. When this happens, the 'kill thrust' message will be replaced by a flashing 'thrust normal' or 'thrust antinormal'. Follow the directions - use your autopilot to orient your ship toward the normal or antinormal, and then start the engine. You'll notice the Rinc number on the left start to decrease. Your goal is to get this number as close to 0 as possible, because Rinc stands for Relative Inclination - the difference in degrees between your orbit and the target orbit. It may take several burns in different directions to line up. When Rinc is .05 or less you win.

So, you've gotten your orbit aligned - congratulations. You've just turned a 3D equation into a much simpler 2 dimensional one.

Transfer

Now comes the fun part. Bring up the transfer MFD, either in the same screen, or the other one if you like. Target the moon as before. You'll see a circle representing the Moon's orbit, and text stating 'no intersect'. This is because your orbital path and the Moon's do not, in fact, intersect. Yet.

First thing to do is hit the HTO button. Once you've done this, you press and hold the DV button. This will cause a dashed oval to grow out of the point in the middle of the display. You want this dashed oval to just touch the circle of the moon's orbit. When it does, you'll get a whole bunch of new symbology. The yellow dashed line is where the moon will be when you get to the other end of the oval. The green dashed line is the point in your orbit where you should make your ejection burn (which will initiate the transfer), the solid yellow line is where the Moon is now in its orbit, and the grey line is where your proposed trajectory (the dashed oval) intersects with the Moon's orbit. What you should do is fiddle with the EJ and EJ- buttons to position this grey line over the dashed yellow one. Once you've done this, wait until the solid green line (your position in your orbit) is either at or close to the dashed green line. Using the Prograde autopilot mode, make a long burn, watching the transfer screen. A solid green oval representing your actual current orbit will grow out from the center of the circle, and eventually match the dashed p 1000 roposed orbit. When it does, kill your engines.

Congratulations, you're on your way to the Moon. So, a couple days later...

Arrival

You've arrived! The Moon is getting pretty big in the viewscreen. Really big. Too big in fact. Oh dear, we're about to impact the lunar surface at some 17,000 miles per hour. Now what?

Bring up the orbit display in one of your MFD's. Hit the ref (reference) button, and put in 'moon'. This brings up a display of your orbital path around the Moon. In your case, this probably looks like a straight green line (your path) intersecting the gray circle (the Moon). If so, switch the HUD to surface mode. Use the autopilot's prograde mode to point the engines. Fire all engines, and watch the orbit display. It should, ideally, turn into a parabola with a circle inside. You want to continue this burn until the green parabola is entirely outside the grey circle representing the Moon. Disaster averted!

Entering the lunar orbit

There is one final problem. Continuing on this path will cause our ship to slingshot around the Moon and off into deep space somewhere. So the final operation in lunar orbit insertion is to slow down the spacecraft somewhere near the closest point to the Moon. Use the autopilot's retrograde mode. While watching the orbit MFD, wait until you reach the closest point and fire the engines. Your path will slowly turn into a smaller and smaller parabola until suddenly turning into an ellipse. If you continue the burn you can get the orbit to be close to a circle. All done? Congratulations, you're here!

What's next

Precis

This article has a precis and appears in the Random addon or Random article section on the Main Page. The precis can be found at LEO-lunar transfer/precis and is displayed below.

MoonThumbTransparent.png

LEO-lunar transfer tutorial. "... Congratulations, you're on your way to the Moon. So, a couple of days later... You've arrived! The Moon is getting pretty big in the viewscreen. Really big. Too big in fact. Oh dear, we're about to impact the lunar surface at some 17,000 miles per hour. Now what?" (More...)