CAPSTONE – Electron (Fl 27), Photon – Mahia, LC-1B (NZ) – 28.06.2022 09:55 UTC

Автор Oreshek-01, 29.06.2021 11:41:45

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zandr

26.06.2022 23:00:10 #20 Последнее редактирование: 26.06.2022 23:12:15 от zandr
Цитата  Rocket Lab  @RocketLab
To allow time for final systems checks, we're now targeting no earlier than June 28 for the launch of CAPSTONE for  @NASA  &  @AdvancedSpace. The trajectory design means the spacecraft will arrive at its lunar orbit on Nov. 13 regardless of launch date between now and July 27 🚀
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По доп.проверкам сдвиг на сутки.
Прибытие на лунную орбиту 13 ноября, если пуск до 27 июля.

zandr

Цитата  Rocket Lab  @RocketLab
Welcome to launch day for #CAPSTONE! It's almost time for this spacecraft to go the Moon! Lift-off is scheduled for 09:55 UTC from Rocket Lab Launch Complex 1 Pad B.
Tune in to watch the launch from around T-50 mins at http://rocketlabusa.com/live-stream
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zandr

Цитата  Rocket Lab  @RocketLab
Once Electron has launched CAPSTONE to LEO, It's Photon's show! Over 6 days, Photon will perform several precise orbit raising maneuvers to set CAPSTONE on a Ballistic Lunar Transfer. Learn more about the maneuvers developed by @SEE_Aerospace & our team. https://bit.ly/3ynxr72
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В течение 6 дней Фотон будет формировать опорную орбиту для перелёта к Луне.

zandr

... по ссылке:
https://astrogatorsguild.com/?p=1620
ЦитатаROCKET LAB'S CAPSTONE INJECTION PROFILE COMES FROM SEE'S BROAD EXPERIENCE IN CISLUNAR SPACE
by Mike Loucks | Jun 25, 2022 | General Comments | 0 Comments

When Rocket Lab's Electron rocket launches the CAPSTONE spacecraft, it will use a series of precisely targeted orbit raising maneuvers and phasing orbits in low Earth orbit to achieve the final injection conditions required to achieve the Ballistic Lunar Transfer that CAPSTONE requires. These maneuvers will be executed by Rocket Lab's updated "Photon" stage and the plan for these maneuvers will be developed by Rocket Lab's flight dynamics team. The Rocket Lab Flight Dynamics (FIDO) team consists of Space Exploration Engineering (SEE) and Rocket Lab FIDO engineers who have been training with SEE over the last 2 years. SEE brings a wealth of experience in planning and
 описание орбит:
executing cislunar trajectories of just this type. A big part of our business model is to bring this expertise to our customers so they can continue do these types of projects when the mission is over.
The expertise of SEE's team comes from missions such as Clementine (DSPSE) which flew in 1994, ISTP(1994), WMAP(2001), IBEX(2008), LCROSS(2009), LADEE(2013), TESS(2018) and SpaceIL Beresheet(2019). All of these missions used combinations of precisely timed Earth phasing orbits and orbit raising maneuvers to achieve their objectives, just as Photon will do to inject the CAPSTONE onto its desired deep space asymptote.
The CAPSTONE Earth orbit profile builds directly from SEE trajectory design and operational experience from a number of previous missions. Each mission design comes from a series of requirements imposed by the launch vehicle (how much mass it can lift to what orbit), the spacecraft propulsion system (how long can burns be, and how many can be done), the navigation techniques used (how many ground passes needed, how big are the antenna on the ground) and operations (how much time does it take to generate new burn plans, process tracking data, generate and test new command files, etc.).
The Interstellar Boundary Explorer (IBEX) trajectory plan was designed, navigated and executed by SEE personnel in 2008. Figure 1 shows the trajectory in an Earth-Moon rotating frame. IBEX used 4 phasing orbits (or loops) to precisely insert IBEX on the desired trajectory in cislunar space. This orbit was ultimately modified to be a 3:1 Lunar resonant orbit that is stable for decades. IBEX is still operational and continues to return good data.
In the Earth-Moon rotating frame, the Earth is in the middle, the Moon is at the top and we draw a line between the Earth and the Moon for clarity. From this vantage point, the Moon appears stationary with respect to the Earth and the background stars appear to rotate.
This classic video (at about the 17:00 mark) shows such a rotating frame. https://youtu.be/bJMYoj4hHqU
This frame is useful because it shows you where the apogees and perigees are with respect to the location of the Moon. For a resonant orbit, you want the apogees to stay clear of the Moon. For a lunar mission, you'd like the last apogee to encounter the Moon. Lunar encounters at apogee will alter the orbit significantly, so controlling these encounters is key in any cislunar mission.
The final extended mission orbit for IBEX is shown in Figure 3 (another rotating view) which has an orbit period that is 1/3 of the Moon's period. Note that the final orbit (in blue) has apogees that keep clear of the Moon.

Figure 1. IBEX Trajectory (2008): Earth-Moon Rotating Frame
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Figure 2. IBEX Trajectory: Earth Inertial Frame
Figure 3. IBEX 3:1 Resonant Trajectory: Earth-Moon Rotating Frame
The Lunar Atmosphere and Dust Environment Explorer (LADEE) flew in 2013 and spent 6 months in lunar orbit. The cislunar portion of the mission consisted of 3.5 phasing loops, which extended the launch window and reduced the delta-v requirements of the mission. Figure 4 shows the Earth-Moon rotating view of the trajectory, while Figure 5 shows the inertial view. SEE worked closely with NASA Ames Flight Dynamics personnel to design the trajectory and then execute it in operations.
Figure 4. LADEE Trajectory (2013): Earth-Moon Rotating Frame
Figure 5. LADEE Trajectory: Earth Inertial Frame
The Transiting Exoplanet Survey Satellite (TESS) launched in 2018 and used a combination of phasing loops (3.5) and a 2:1 resonant orbit, combining features of both IBEX and LADEE trajectories. SEE personnel worked with GSFC engineers to design and fly the mission. Figures 6 and 7 show the phasing loops once again.
Figure 6. TESS Trajectory (2018): Earth-Moon Rotating Frame
Figure 7. TESS Trajectory (2018): Earth Inertial Frame
In February of 2019, the SpaceIL "Beresheet" lander used a lower starting point with a super-GEO GTO with an apogee near 60,000 km altitude. A series of initial phasing orbits at lower altitudes then had been used on LADEE or IBEX) were necessary. SEE helped design the trajectory, trained the SpaceIL and Israel Aerospace Industries (IAI) Flight Dynamics engineers, and supported them during operations. Figures 8 and 9 show the cislunar portion of the Beresheet trajectory.
Figure 8. Beresheet Trajectory (2019): Earth-Moon Rotating Frame
Figure 9. Beresheet Trajectory: Earth Inertial Frame
The CAPSTONE launch provides a different challenge, as the Electron rocket leaves the Photon + Capstone pair in a really low Earth orbit. We have to do a series of fairly big maneuvers to raise apogee, while giving ourselves enough time between burns to find out how the maneuvers performed, and plan the next one. All of this goes on while the perigee and RAAN are moving due to the Earth's gravity field. Note that in Figure 10, the starting orbits are really small, compared to starting orbits we've used in previous missions.
Figure 10. CAPSTONE/Photon Trajectory (2022): Earth-Moon Rotating Frame
Figure 11 shows the 7 levels that are used to get to the final targeted asymptote. Finally, Figure 12 shows the same trajectory in an Earth Inertial frame. While the figures don't show it, there is typically 12 hours or more between each burn, and the entire sequence takes roughly 6 days after launch to achieve.
Once the CAPSTONE spacecraft is precisely placed on its target asymptote by the Photon stage, it is then on a Ballistic Lunar Transfer from which it will approach the Moon and enter into a Near Rectilinear Halo Orbit (NRHO). Figure 12 shows the Ballistic Lunar Transfer CAPSTONE uses to transit to the Moon in an Earth-Sun rotating frame. Finally, Figure 13 shows the same trajectory in an Earth Inertial frame. The BLT and NRHO portion of the mission were planned by our friends at Advanced Space in Colorado. Please visit their page for extensive details of the CAPSTONE Mission:
http://advancedspace.com/
The CAPSTONE propulsion system comes from our friends at Stellar Exploration. Please visit their page here:
https://www.stellar-exploration.com/
Figure 11. CAPSTONE/Photon Trajectory: Earth Inertial Frame
Figure 12. CAPSTONE Ballistic Lunar Trajectory (BLT) (2022): Earth-Sun Rotating Frame
Figure 13. CAPSTONE Ballistic Lunar Trajectory (BLT) : Earth Inertial Frame
(Видео внутри - лекция от 1960 года.)

zandr

Цитата  Rocket Lab  @RocketLab
Looking for photos and videos of the CAPSTONE mission? Check out our Flickr page: https://flic.kr/s/aHBqjzPrHL
More pics and videos will be added after launch! 📸
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zandr

Цитата  Rocket Lab  @RocketLab
Weather is trending green for the CAPSTONE launch!
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Погода - 75%

Liss

Две минуты до пуска...
Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации

Liss

Ключ на дренаж...
Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации

Liss

Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации

Liss

Есть отделение 1-й ступени и сброс ГО.
Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации

max_schmurz

Сегодня без рокеткамов почему-то, сплошная анимация

Liss

Есть отделение 2-й ступени. H=174.6 km, V=26761 km/h.
Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации

Liss

Параметры орбиты РБ Lunar Photon после первого импульса довыведения:
* по информации Питера Бека -- 170x1040 km;
* по первому набору TLE на объект 52914 -- 39.12° 169x1045 km.
Сообщается, что второй импульс также был успешным.
Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации

Air

Цитата: max_schmurz от 28.06.2022 13:05:13Сегодня без рокеткамов почему-то, сплошная анимация
Предельная нагрузка. Облегчили все, что было возможно. В том числе и рокеткамы.

zandr

https://www.youtube.com/watch?v=TuX5LIz3A1M
Цитатаhttps://www.youtube.com/watch?v=TuX5LIz3A1M 4:09
Electron launches NASA's CAPSTONE to the Moon
  SciNews
Rocket Lab's Electron launch vehicle launched NASA's CAPSTONE mission to the Moon, from Launch Complex 1 on Mahia Peninsula, New Zealand, on 28 June 2022, at 09:55 UTC (21:55 NZST, 05:55 EDT). The Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment (CAPSTONE) CubeSat will be the first satellite to operate in a Near Rectilinear Halo Orbit around the Moon. The mission is Rocket Lab's 27th Electron launch overall.
Credit: NASA/Ames Research Center/Rocket Lab

Pirat5

06/28/2022 13:32  Стивен Кларк
Rocket Lab и NASA прекратили освещение запуска CAPSTONE вскоре после того, как вторая ступень Electron вышла на парковочную орбиту. Официальные лица подтвердили развертывание буксира Lunar Photon с космическим кораблем CAPSTONE со второй ступени Electron, но пока нет подтверждения первого запуска двигателя Lunar Photon, который должен был начаться примерно в 6:14 утра по восточному поясному времени (10:14 по Гринвичу).
https://spaceflightnow.com/2022/06/28/rocket-lab-capstone-launch-mission-status-center/

zandr

ЦитатаJonathan McDowell  @planet4589
New TLE for CAPSTONE showing a slight perigee raise to 220 x 1075 km at around 1045 to 1050 UTC, consistent with the time of the expected second burn.
Похоже, и второй отработан.

zandr

Цитата  T.S. Kelso  @TSKelso
CelesTrak has GP data for 2 objects from the launch (2022-070) of NASA's CAPSTONE mission on an Electron booster from Rocket Lab's Launch Complex 1  on New Zealand's Mahia Peninsula on Jun 28 at 0955 UTC: https://nasa.gov/press-release/capstone-launches-to-test-new-orbit-for-nasa-s-artemis-moon-missions....
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zandr

ЦитатаJonathan McDowell  @planet4589  ·  55m
New TLEs for CAPSTONE show it in a slightly less elliptical orbit of 250 x 1043 km rather than 220 x 1075 km. This appears to reflect improved measurement rather than an actual change.
То ли - слегка скруглил, то ли - лучше померили.

Liss

Цитата: zandr от 29.06.2022 08:05:23
Цитата: undefinedJonathan McDowell  @planet4589  ·  55m
New TLEs for CAPSTONE show it in a slightly less elliptical orbit of 250 x 1043 km rather than 220 x 1075 km. This appears to reflect improved measurement rather than an actual change.
То ли - слегка скруглил, то ли - лучше померили.

Скорее второе -- чистый подъем перигея при неизменном апогее.
Сказанное выше выражает личную точку зрения автора, основанную на открытых источниках информации