Getting much closer. - CEIT aka 'Test Drive' complete ✅- Dragon TVAC testing in a week- Crew EVA TVAC testing in two weeks- Then EVA suit reveal - About 6 more weeks of the sim campaign- Quarantine- Summer🚀
Quote from: hektor on 04/06/2024 11:12 pmSTS-31 had an apogee of 621 km. So highest distance from Earth since Apollo 17.We shouldn't forget the Gemini missions that docked with their Agena targets and then fired the Agenato boost the Gemini capsule to a higher orbit.This was mentioned earlier but I couldn't find it to use as a quote.Gemini 11 reached an apogee of 1368 km which I believe is the highest manned orbital flight in a LEO.Carl
STS-31 had an apogee of 621 km. So highest distance from Earth since Apollo 17.
Quote from: CuddlyRocket on 04/04/2024 05:22 pmIf I recall correctly, only the Apollo lunar missions reached Polaris Dawn/Resilience's expected highest Earth orbital altitude. Question: During or after the TLI burn, did any such Apollo spacecraft exceed that altitude while in an Earth orbit or were they by then in an Earth-Moon orbit; in an orbit that intersected the Earth's surface, or some other non-Earth orbit?During the TLI burn, altitude increased from about 185 km to 330 km. At the end of the burn, they were heading to about 400,000 km apogee. The Skylab missions went to about 430 km.
If I recall correctly, only the Apollo lunar missions reached Polaris Dawn/Resilience's expected highest Earth orbital altitude. Question: During or after the TLI burn, did any such Apollo spacecraft exceed that altitude while in an Earth orbit or were they by then in an Earth-Moon orbit; in an orbit that intersected the Earth's surface, or some other non-Earth orbit?
So, at the end of the TLI burn were the Apollo missions still orbiting the Earth or were they orbiting the Earth-Moon system? (Technically, a circumbinary orbit?)
https://twitter.com/spacex/status/1786759044948189202Quote The SpaceX Extravehicular Activity (EVA) suit → spacex.com/updates #Maythe4thBeWithYouQuote At ~700 km above Earth, the EVA suit will support the @PolarisProgram’s Polaris Dawn crew in the vacuum of space during the first-ever commercial astronaut spacewalkhttps://twitter.com/spacex/status/1786759332794880339Quote Evolved from the Intravehicular Activity (IVA) suit, the EVA suit provides greater mobility, a state-of-the-art helmet Heads-Up Display (HUD) and camera, new thermal management textiles, and materials borrowed from Falcon’s interstage and Dragon’s trunkQuote Building a base on the Moon and a city on Mars will require millions of spacesuits. The development of this suit and the execution of the spacewalk will be important steps toward a scalable design for spacesuits on future long-duration missions as life becomes multiplanetaryhttps://twitter.com/spacex/status/1786759813440897490Quote Tune in today ~3:00 p.m. ET to hear the crew discuss the mission on Spaces
The SpaceX Extravehicular Activity (EVA) suit → spacex.com/updates #Maythe4thBeWithYou
At ~700 km above Earth, the EVA suit will support the @PolarisProgram’s Polaris Dawn crew in the vacuum of space during the first-ever commercial astronaut spacewalk
Evolved from the Intravehicular Activity (IVA) suit, the EVA suit provides greater mobility, a state-of-the-art helmet Heads-Up Display (HUD) and camera, new thermal management textiles, and materials borrowed from Falcon’s interstage and Dragon’s trunk
Building a base on the Moon and a city on Mars will require millions of spacesuits. The development of this suit and the execution of the spacewalk will be important steps toward a scalable design for spacesuits on future long-duration missions as life becomes multiplanetary
Tune in today ~3:00 p.m. ET to hear the crew discuss the mission on Spaces
Chat with the Polaris Dawn crew and SpaceX team today ~3:00 p.m. ET on Spaces →
Quote from: CuddlyRocket on 04/08/2024 11:17 amSo, at the end of the TLI burn were the Apollo missions still orbiting the Earth or were they orbiting the Earth-Moon system? (Technically, a circumbinary orbit?)At the end of TLI, they are in Earth orbit with an apogee of around 400,000 km. I presume that the spacecraft is not orbiting the Lunar system until it reaches the "Hill sphere", where the Lunar and Earth gravity cancel each other.https://en.wikipedia.org/wiki/Hill_sphere
I don't think it makes sense to single out objects heading towards Lunar orbit as being in the Earth-Moon system. Since the Moon has a non-zero gravitational effect on all objects orbiting Earth, technically all objects orbiting the Earth are in the Earth-Moon system.
A circumbinary orbit is where one object orbits around two larger objects (a planet orbiting two stars for example). To maintain a stable orbit, the smaller object would be far away from the two larger objects, which is not the case here.https://en.wikipedia.org/wiki/Circumbinary_planet
There's a comment on Eric's post that wonders if an expendable booster will be used. And my reply to that mentioned a booster that's flown 20 times or is close to the 20th flight point may be picked.If that's the case, I'm predicting B1062 will make its swansong for Polaris Dawn.
Summary of Polaris Dawn Mission "Spaces" Audio update:Quote from: SpaceX's "Spaces" on Twitter - Polaris Dawn Mission - https://twitter.com/SpaceX/status/1786764079002161572Launchearly summer launchtargeted apogee 1400km - 7 orbitseva at 700kmDragonbig addition is the nitrogen (nitrox?) repress Center TrayAdditional mobility aids / modifications in the vessel (bra on display, padding around the hatch, hatch modifications with extra hand holdsStructure outside the forward hatch is called "Skywalker"-Fixed, designed for fwd bulkhead thrusters fire around it and associated heating -Metallic w/ thermal barrier coatingSuitjoints / rotators on shoulders, arms, and wrist (are soft structures when unpressurized)cooling knob to control temperature added to suit / umbilicalHUD (heads up display) in helmet will include data for temp, pressure, humidity, and timercrew 6 had changes informed by eva suit devEVAJared and Sarah will have cameras in their helmets / be performing EVANo NBL training deliberately. vertical and horizontal harness rigs (Active Response Gravity Offload System (ARGOS) type system)Eva 2 hour total including depressAutomatic machine transcription and audio attached
Launchearly summer launchtargeted apogee 1400km - 7 orbitseva at 700kmDragonbig addition is the nitrogen (nitrox?) repress Center TrayAdditional mobility aids / modifications in the vessel (bra on display, padding around the hatch, hatch modifications with extra hand holdsStructure outside the forward hatch is called "Skywalker"-Fixed, designed for fwd bulkhead thrusters fire around it and associated heating -Metallic w/ thermal barrier coatingSuitjoints / rotators on shoulders, arms, and wrist (are soft structures when unpressurized)cooling knob to control temperature added to suit / umbilicalHUD (heads up display) in helmet will include data for temp, pressure, humidity, and timercrew 6 had changes informed by eva suit devEVAJared and Sarah will have cameras in their helmets / be performing EVANo NBL training deliberately. vertical and horizontal harness rigs (Active Response Gravity Offload System (ARGOS) type system)Eva 2 hour total including depress
