Gravity turn: Perbedaan antara revisi

'''GravityBelokan turngravitasi''' atau({{lang-en|gravity turn, '''zero-lift turn'''}}) merupakan manuverolah gerak yang digunakan dalam meluncurkan [[wahana antariksa|wantariksa]] ke dalam, atau turun dari, orbit sekitar benda angkasa seperti planet atau bulan.<ref name="space-sourcebook">{{Cite book|last = Glasstone|first = Samuel|title = Sourcebook on the Space Sciences|publisher = D. Van Nostrand Company, Inc|year = 1965|pages = 209 or §4.97|url = http://books.google.com/?id=K6k0AAAAMAAJ&q=gravity+turn&dq=gravity+turn|access-date = 2016-01-21|archive-date = 2023-08-08|archive-url = https://web.archive.org/web/20230808231951/https://books.google.com/books?id=K6k0AAAAMAAJ&q=gravity+turn&dq=gravity+turn&hl=en|dead-url = no}}</ref><ref name="thesis">{{Cite journal|first = David W.|last = Callaway|title = Coplanar Air Launch with Gravity-Turn Launch Trajectories|journal = Masters Thesis|date = March 2004|url = https://research.maxwell.af.mil/papers/ay2004/afit/AFIT-GAE-ENY-04-M04.pdf|access-date = 2016-01-21|archive-date = 2007-11-28|archive-url = https://web.archive.org/web/20071128105951/https://research.maxwell.af.mil/papers/ay2004/afit/AFIT-GAE-ENY-04-M04.pdf|dead-url = yes}}</ref>

Istilah ''gravity turn'' juga dapat mengacu pada penggunaan gravitasi planet untuk mengubah arah wahana antariksawantariksa dalam situasi selain memasuki atau meninggalkan orbit. Ketika digunakan dalam konteks ini, hal ini mirip dengan katapelselepetan gravitasi.; perbedaannya adalah bahwa katapelselepetan gravitasi sering meningkat atau menurun kecepatan wahana antariksawantariksa dan berubah arah, sedangkan gravitasi berubah hanya mengubah arah.<ref name="mars-nonstop">{{Cite journal|title = Mars Nonstop Round-Trip Trajectories|last = Luidens|first = Roger W.|year = 1964|journal = American Institute of Aeronautics and Astronautics|volume = 2|issue = 2|pages = 368–370|url = http://ntrs.nasa.gov/search.jsp?R=431657&id=1&qs=Ntt%3D%2522Mars%252BNonstop%252BRound-Trip%252BTrajectories%2522%26Ntk%3Dall%26Ntx%3Dmode%2520matchall%26N%3D0%26Ns%3DHarvestDate%257c1|access-date = 2016-01-21|archive-date = 2022-12-06|archive-url = https://web.archive.org/web/20221206195634/https://ntrs.nasa.gov/search.jsp?R=431657&id=1&qs=Ntt%3D%2522Mars%252BNonstop%252BRound-Trip%252BTrajectories%2522%26Ntk%3Dall%26Ntx%3Dmode%2520matchall%26N%3D0%26Ns%3DHarvestDate%257c1|dead-url = no}}</ref> <span class="cx-segment" data-segmentid="18"></span>