Flying dutchman Posted June 12, 2021 Share Posted June 12, 2021 That's a very old meme but i like it Quote Link to comment Share on other sites More sharing options...
Nothalogh Posted June 13, 2021 Share Posted June 13, 2021 On 6/10/2021 at 1:29 PM, SpaceFace545 said: Or you do what blue origin is doing Promising things they haven't built yet? Quote Link to comment Share on other sites More sharing options...
Deddly Posted June 13, 2021 Share Posted June 13, 2021 Some rivalry is surely healthy in an endeavour such as this, but let's please not turn this into an "us vs them" BO-bashing thread. Quote Link to comment Share on other sites More sharing options...
RCgothic Posted June 13, 2021 Share Posted June 13, 2021 New launch tower section. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted June 14, 2021 Share Posted June 14, 2021 Looks like we might still see Starship 39A launches at some point: (That's probably where they'll launch HLS from). Quote Link to comment Share on other sites More sharing options...
Beccab Posted June 14, 2021 Share Posted June 14, 2021 what does "E-sub-c safety threshold" mean? Quote Link to comment Share on other sites More sharing options...
SpaceFace545 Posted June 14, 2021 Share Posted June 14, 2021 4 hours ago, Beccab said: what does "E-sub-c safety threshold" mean? They want to keep it traveling under the speed of light Quote Link to comment Share on other sites More sharing options...
tater Posted June 14, 2021 Share Posted June 14, 2021 5 hours ago, Beccab said: what does "E-sub-c safety threshold" mean? Casualty expectation. Presumably, Expectationcasualties, or Ec. From https://www.govinfo.gov/content/pkg/CFR-2010-title14-vol4/pdf/CFR-2010-title14-vol4-sec417-105.pdf Quote § 417.107 Flight safety. (a) Flight safety system. For each launch vehicle, vehicle component, and payload, a launch operator must use a flight safety system that satisfies sub-part D of this part as follows, unless § 417.125 applies. (1) In the vicinity of the launch site. For each launch vehicle, vehicle component, and payload, a launch operator must use a flight safety system in the vicinity of the launch site if the following exist: (i) Any hazard from a launch vehicle, vehicle component, or payload can reach any protected area at any time during flight; or (ii) A failure of the launch vehicle would have a high consequence to the public. (2) In the downrange area. For each launch vehicle, vehicle component, and payload, a launch operator must provide a flight safety system downrange if the absence of a flight safety system would significantly increase the accumulated risk from debris impacts. (b) Public risk criteria. A launch operator may initiate the flight of a launch vehicle only if flight safety analysis performed under paragraph (f) of this section demonstrates that any risk to the public satisfies the following public risk criteria: (1) A launch operator may initiate the flight of a launch vehicle only if the risk associated with the total flight to all members of the public, excluding persons in waterborne vessels and aircraft, does not exceed an expected average number of 0.00003 casualties (Ec≤ 30 × 10¥6) from impacting inert and impacting explosive debris, (Ec≤ 30 × 10¥6) for toxic release, and (Ec≤ 30 × 10¥6) for far field blast over-pressure. The FAA will determine whether to approve public risk due to any other hazard associated with the proposed flight of a launch vehicle on a case-by-case basis. The Eccriterion for each hazard applies to each launch from lift-off through orbital insertion, including each planned impact, for an orbital launch, and through final impact for a suborbital launch. (2) A launch operator may initiate flight only if the risk to any individual member of the public does not exceed a casualty expectation (Ec of 0.000001 per launch (Ec≤ 1 × 10¥6) for each hazard. (3) A launch operator must implement water borne vessel hazard areas that provide an equivalent level of safety to that provided by water borne vessel hazard areas implemented for launch from a Federal launch range. (4) A launch operator must establish aircraft hazard areas that provide an equivalent level of safety to that provided by aircraft hazard areas implemented for launch from a Federal launch range. (c) Debris thresholds. A launch operator’s flight safety analysis, performed as required by paragraph (f) of this section, must account for any inert debris impact with a mean expected kinetic energy at impact greater than or equal to 11 ft-lbs and, except for the far field blast overpressure effects analysis of § 417.229, a peak incident overpressure greater than or equal to 1.0 psi due to any explosive debris impact. (1) When using the 11 ft-lbs threshold to determine potential casualties due to blunt trauma from inert debris impacts, the analysis must: (i) Incorporate a probabilistic model that accounts for the probability of casualty due to any debris expected to impact with kinetic energy of 11 ft-lbs or greater and satisfy paragraph (d) of this section; or (ii) Count each expected impact with kinetic energy of 11 ft-lbs or greater to a person as a casualty. Quote Link to comment Share on other sites More sharing options...
tater Posted June 14, 2021 Share Posted June 14, 2021 (edited) Shotwell gave a NU commencement speech online today (didn't watch, pics posted on NSF), and she walks through Hawthorne a little, and there is a countdown screen of Raptors shipped with the engines of SS/SH shown for the test flight, all the SH center engines are green, and the ring of static engines not green. Countdown is for the end of July 9. 2 of the 3 SN20 engines show shipped. None of the Rvacs. Edited June 14, 2021 by tater Quote Link to comment Share on other sites More sharing options...
tater Posted June 14, 2021 Share Posted June 14, 2021 (edited) <br /> Edited June 14, 2021 by tater Quote Link to comment Share on other sites More sharing options...
tater Posted June 14, 2021 Share Posted June 14, 2021 Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted June 14, 2021 Share Posted June 14, 2021 1 hour ago, tater said: Edited 1 hour ago by tater For those thinking they need glasses... Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted June 14, 2021 Share Posted June 14, 2021 More evidence that they are in fact going for the tower catching. Quote Link to comment Share on other sites More sharing options...
tater Posted June 14, 2021 Share Posted June 14, 2021 Just now, RealKerbal3x said: More evidence that they are in fact going for the tower catching. Maybe the hardpoint in between secures the aft fins on SS? Quote Link to comment Share on other sites More sharing options...
tater Posted June 14, 2021 Share Posted June 14, 2021 1 hour ago, CatastrophicFailure said: For those thinking they need glasses... Am I the only one who thinks they need glasses because the drawing on the left is not a circle of circles, it's an ellipse of circles? Quote Link to comment Share on other sites More sharing options...
Beccab Posted June 14, 2021 Share Posted June 14, 2021 1 minute ago, tater said: Am I the only one who thinks they need glasses because the drawing on the left is not a circle of circles, it's an ellipse of circles? I hate it so much Quote Link to comment Share on other sites More sharing options...
tater Posted June 14, 2021 Share Posted June 14, 2021 Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted June 14, 2021 Share Posted June 14, 2021 52 minutes ago, tater said: Am I the only one who thinks they need glasses because the drawing on the left is not a circle of circles, it's an ellipse of circles? Just the latest design iteration, the rest of us are still catching up. Fits between the catch arms better that way. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted June 15, 2021 Share Posted June 15, 2021 7 hours ago, tater said: Am I the only one who thinks they need glasses because the drawing on the left is not a circle of circles, it's an ellipse of circles? It's a ring of intersecting nozzles, it's normal. Quote Link to comment Share on other sites More sharing options...
tater Posted June 15, 2021 Share Posted June 15, 2021 32 minutes ago, kerbiloid said: It's a ring of intersecting nozzles, it's normal. No, it’s poorly drawn. Open it in photoshop. The real image at SpaceX is a circle. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted June 15, 2021 Share Posted June 15, 2021 It's a part clipping irl. Quote Link to comment Share on other sites More sharing options...
tater Posted June 15, 2021 Share Posted June 15, 2021 46 minutes ago, kerbiloid said: It's a part clipping irl. Well, the guy that made that graphic certainly did Quote Link to comment Share on other sites More sharing options...
Beccab Posted June 15, 2021 Share Posted June 15, 2021 Quote Link to comment Share on other sites More sharing options...
Deddly Posted June 15, 2021 Share Posted June 15, 2021 12 hours ago, tater said: Am I the only one who thinks they need glasses because the drawing on the left is not a circle of circles, it's an ellipse of circles? They burned too much at Pe Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted June 15, 2021 Share Posted June 15, 2021 Quote Link to comment Share on other sites More sharing options...
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