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TheEpicSquared

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    SpaceX Discussion Thread

    in Science & Spaceflight

    Posted

    1 hour ago, Skylon said:

    While I'd love to see a custom fairing, I imagine they would be fine with 5cm, but separation may be hairy. I guess it's worth seeing how the fairing can handle separation with large payloads (dimensions, not mass), though maybe with a less expensive vehicle.

    So looks like the BulgariaSat-1 is reusing the Iridium NEXT 1-10 booster, 5 month six after the first flight

    Note that the SES-10 booster launched over 11 months after its first flight in April last year

    Cutting the time in half. :) 

    Although it should Ben noted that SES-10 was ready to fly on the reused booster by October, it was only the Amos-6 anomaly that delayed it. So I suspect that the booster finished inspections long before the end of 2016, and SpaceX just used the extra time to conduct more tests.

    SpaceX Discussion Thread

    in Science & Spaceflight

    Posted

    12 minutes ago, sevenperforce said:

    Dammit.

    On another note, I was wondering -- will SpaceX ever lose an RTLS booster?

    We've now had five successful RTLS landings, and we know that RTLS is only used when there is plenty of margin; otherwise they just go to a droneship. Every landing has been picture-perfect with plenty of margin. Is this going to be as routine as, say, Shuttle landings?

    On yet another note -- the wingspan on the X-37B is 4.55 meters; according to the Falcon 9 User's Guide (page 36), the internal diameter of the payload fairing is just 4.6 meters. That's cutting it awfully close. I wonder if it would launch without the fairing? Might give SpaceX some good aerodynamic modeling validation. Or will they build a specialized fairing for it?

    5cm. What could go wrong? :P 

    However I'm thinking they definitely won't launch without a fairing, since the aerodynamic force from the wings would be... destabilizing, to say the least. Also, the payload adapter would generate massive amounts of drag. 

    I think they'll just use the standard fairing. There is a 5cm gap to work with. 

    SpaceX Discussion Thread

    in Science & Spaceflight

    Posted

    1 hour ago, CatastrophicFailure said:

    BulgariaSat pushed back to the 17th :(, probably due to the previous delay. But I think that's a Saturday again.:D

    Aw. Still, maybe Iridium 11-20 might be able to launch in June, seeing as it's currently slotted in for the 25th. Either way, I think it's a safe bet that Intelsat-35e will be delayed to well after the 1st.

    SpaceX Discussion Thread

    in Science & Spaceflight

    Posted · Edited by TheEpicSquared

    3 minutes ago, Shpaget said:

    Honestly, I'm not familiar with the acronym and google is failing me.

    Entry Descent Landing :) 

    Also, regarding the issue of CO2 scrubbing, I'm assuming opening the hatch and depressurising the cabin wouldn't be a viable solution? Of course, the astronauts would be tied to the wall or something, with their EVA suits on

    SpaceX Discussion Thread

    in Science & Spaceflight

    Posted

    4 minutes ago, Skylon said:

    I know, crazy (I'll leave that up now gay made me laugh, no corrections needed)

    Another thing, why V1.1. What, is there going to be a V2? Just call it V1

    I think it should be as follows:

    Falcon 1 v1.0

    Falcon 1 v1.1 (Falcon 1e)

    Falcon 5

    Falcon 9 v1.0 (first Falcon 9 version)

    Falcon 9 v1.1 (second Falcon 9 version)

    Falcon 9 v1.2 (current Falcon 9 version)

    Falcon 9 v1.3 (Falcon 9 Block 5)

    ISRO Discussion Thread

    in Science & Spaceflight

    Posted

    20 hours ago, Scotius said:

    This article is a bit... bombastic :)  6-10 tons to LEO does not place this rocket in "Heavy-weight launcher" category. Still - good going India. You deserve it after years of hard work.

    Yeah, definitely bombastic. :P Oh well, it's an Indian news site, so I guess that's to be expected. 

    Also, here's live updates from our favorite space news website, Spaceflightnow! https://spaceflightnow.com/2017/06/05/gslv-mk3-gsat-19-mission-status-center/

    SpaceX Discussion Thread

    in Science & Spaceflight

    Posted

    9 minutes ago, TheEpicSquared said:

    Looking at the "map view", so to speak, it looks like the second orbit goes over a place quite close to SpaceX's Texas launch site. It doesn't seem like it would be too difficult to conduct a plane change maneuver and deorbit burn to land S2 at Boca Chica after launching from Florida.

    I noticed the same thing with the Inmarsat 5 F4 launch, so it seems like it would be possible with both GTO and LEO missions. I think I got a screenshot of it, I'll see if I can get it here soon. :) 

    Inmarsat 5 F4: 4gaKKxl.png

    ^ Note that the trajectory goes right over the Gulf of Mexico, where Boca Chica is.

     

    And CRS-11:OA6CeIr.png

    ^ Again, the trajectory goes (roughly) over the Gulf. Would require more delta-v for the plane change, but if it's a LEO launch (as is the case with CRS missions), S2 would conceivably have enough spare propellant.

    SpaceX Discussion Thread

    in Science & Spaceflight

    Posted · Edited by TheEpicSquared
    Added links to pics (hey, that sort of rhymes!)

    Looking at the "map view", so to speak, it looks like the second orbit goes over a place quite close to SpaceX's Texas launch site. It doesn't seem like it would be too difficult to conduct a plane change maneuver and deorbit burn to land S2 at Boca Chica after launching from Florida.

    I noticed the same thing with the Inmarsat 5 F4 launch, so it seems like it would be possible with both GTO and LEO missions. 

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