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Chinese Launchers / Space-Epoch rocket startup
« Last post by FutureSpaceTourist on Today at 01:42 pm »
Haven’t found a thread for this startup:

https://www.space.com/china-rocket-startup-space-epoch-spacex-starship

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Mini Starship? Chinese startup wants to make its own version of SpaceX Mars rocket

By Andrew Jones published 22 days ago
Space Epoch has raised money and started making propellant tanks.
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Any news of the satellites being delivered to the Cape? 🛰 🛰
If no, then a December 15 launch is very much NET.

Sounds like they have arrived at Cape Canaveral:

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It's on! #10moresleeps #O3bMPOWER @SES_Satellites

https://twitter.com/steviecSES/status/1599039889940500482
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https://blogs.nasa.gov/spacestation/2022/12/03/spacewalkers-exit-station-to-install-roll-out-solar-array/

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Spacewalkers Exit Station to Install Roll-Out Solar Array

Expedition 68 Flight Engineers Josh Cassada and Frank Rubio of NASA began a spacewalk at 7:16 a.m. EST to install an International Space Station Roll-Out Solar Array (iROSA) to augment power generation for the 3A power channel on the station’s starboard truss structure.

In addition to installing an iROSA, the spacewalkers will disconnect a cable to allow the 1B power channel to be reactivated after it was shut down due to a power trip in its electrical system. The disconnection of the cable will isolate the affected portion of the array and restore the channel to 75% of its normal operating capacity.

Cassada, designated extravehicular crew member 1 (EV1), is wearing a suit with red stripes. Rubio, designated extravehicular crewmember 2 (EV 2), is in an unmarked suit. Coverage of the spacewalk continues on NASA Television, the NASA app, and the agency’s website.

Photo caption:

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Astronaut Josh Cassada is pictured during a spacewalk on Nov. 15, 2022, to ready the space station for future rollout solar array installation work.
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Nasa astronaut reveals why humans will never live permanently on the Moon despite plans to build lunar city:
https://www.the-sun.com/tech/6828035/nasa-astronaut-humans-living-on-moon-lunar-city/amp/
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PET 2 hours
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This is probably a stupid idea, but that's never stopped me before:  What if you had an abort system based directly on the D2, with the following modifications:

1) No or dramatically reduced heat shield.  (If all of the abort cases are subsonic or low supersonic, you don't need much TPS.  For supersonic and hypersonic aborts, the Starship is its own escape system--at least until it gets close to the ground and has no chopsticks to land on.)

2) Propulsive landing only, no parachutes.  (So there's no parachute or landing jerk issue, requiring couches inclined through the load axis of the parachutes.)

3) Add in the landing feet, per the old design, to make things relatively safe for landings in rough terrain.

4) No storage for non-crew payload.

5) Remove ECLSS from the D2 and put it in the Starship payload bay, connected via a QD of some kind.

You could go back to at least seven crew, since all significant loads would go through the axis of symmetry again.  The question is whether, by ripping out additional storage, you could go to ten crew?  How 'bout eight (i.e., two vanilla Crew Dragons' worth of passengers)?

It'd be a pretty miserable ride, but it only lasts from launch to RPOD, and RPOD to landing.¹

Note that this still requires carrying the D2 inside the Starship payload bay, with a fairing that can blow away and take the canards safely with it.  That's a non-trivial bit of work there,² but it's a lot less total work if you don't have to build the abort capsule from scratch.

It may be a stupid idea, but it's a stupid idea with artwork!

____________
¹Since there's no heat shield, I suppose you could put a hatch in the bottom that led to a secondary crew space, for use only while on-orbit.  That would also allow you to place the docking port and tunnel someplace where it wasn't in the escape path.  Might that allow you to add an extra seat in the nose? (This may be an even stupider idea than the original...)

²Two very difficult things:
1) The separation plane has to work through the ventral TPS tiles.
2) The separation plane has to bear all canard loads during reentry, but still be able to jettison.

This is very heavy modification which means it'd be appropriately costly.

Moreover you want to use capsule shaped for hypersonic re-entry for subsonic or at most low supersonic operations.  That's a kludge at best.

You could fit 7 maybe 10 people there.

Really, use zero-zero ejection seats instead.

You could seat 12 people in Starship in 2 lines and 6 rows or 4 lines and 3 rows (or asymmetric 3 lines and 4 rows). And while one poster claimed that those ejecting later in ejection sequence would be fried, they missed the obvious fact that every next person would be protected inside the hull while waiting (fraction of a second) for their ejection turn. The sequence for each line would be: blow hull panel, eject occupant from the rear, blow away the next pane, eject the next up occupant, and so on. And the sequence could alternate between the lines for extra clearance.

It's an already solved problem. So less development cost, sooner readiness for use, and better capacity.
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Whatever the disadvantages l... machines don't automatically need food, water, and oxygen.
But how can we bootstrap such applications here on Earth, in order to eventually extend them into space?

Pretty sure they "automatically" need electricity.

Sure they need electricity, and there's plenty to be had ...

But wait.  There's also plenty of "food, water, and oxygen" to be had.  What point were you making?
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https://twitter.com/space_station/status/1599039547207081985

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[email protected] spacewalker Josh Cassada is releasing the bolts on the roll-out solar array to remove it from its attachment point before installing it on the station. nasa.gov/live
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Chinese Launchers / Re: Tiangong - Chinese Space Station
« Last post by FutureSpaceTourist on Today at 01:12 pm »
https://twitter.com/cnspaceflight/status/1599042700971364352

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CMSA has confirmed multiple countries have applied to send astronauts to China Space Station and the preparation for training foreign astronauts is underway
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