Hang on. This is a thing Iíve been aware of for quite a while. Know some people that are very well in the know and this is not the story Iíve heard....I canít go into many details, but the part about hypergolics is, as far as Iím aware, flat out untrue. Crew-4ís heat shield is not compromised. And the NESC signed off on all of this....How does hypergol intrusion into the heat shield even make any sense? How does it get there? The entire propulsion systems are walled off. Either way, youíre telling me the prop system has been quietly leaking hypergolics inside the capsule? That should be a much bigger issue
In a discussion like this, I like to know what is the source, who is speaking. This Space Explored web site and Derek Wise are completely new to me. Are they recent ? what is their background, their business model, their target audience ? can it be a case of a new web site seeking to establish notability ?
There is a wide range of business models, and it can go from The Washington Post to the Weekly World News.
Quote from: whitelancer64 on 05/23/2022 09:39 pmhttps://spaceexplored.com/2022/05/23/spacex-heat-shield-issues/I've just seen this posted on Facebook. Some relevant quotes from that article: SpaceX Dragon hypergolic leak risked crew, NASA investigation underway*snip*If this article is accurate (a big "if"), would not ASAP have had something to say about it?
https://spaceexplored.com/2022/05/23/spacex-heat-shield-issues/I've just seen this posted on Facebook. Some relevant quotes from that article: SpaceX Dragon hypergolic leak risked crew, NASA investigation underway*snip*
See: https://forum.nasaspaceflight.com/index.php?topic=50309.msg2371562#msg2371562i.e. most likely fully debunked.
Here's the full official statement from NASA that Davenport is quoting from, as recently retweeted on the main @NASASpaceflight (Chris B) account:https://twitter.com/lorengrush/status/1529144891472748544Some interesting information in here, including the fact that SpaceX has in fact reused some PICA-X tiles on previous *cargo* Dragon flights (which may have been stated publicly before, but was new to me at least).
Its interesting seeing Boeing using a plug style door. I'm assuming they have a clever way of preventing the 100lb hatch from smacking someone in the face if they needed to use the top hatch. This is verses the Dragons hinge mechanism which restrains the hatch (presumably for earthbound ease of access to the top hatch).This got me thinking about the logistics for Dragon rescue. Are the pyros strong enough to push the nose cone off so that they can utilize the top hatch? Is the nose cone actuator strong enough to actuate in earth gravity?
Dragon has a obstructed forward hatch. How does it ditch the nose cone / provide access to the front hatch? Starliner is also in a similar boat with their NDS hatch cover.
All1. Install camera caps2. Retrieve Daily Bag from Location 18, stage near toilet3. Ensure Location 21 is closed4. Retrieve privacy curtain from Location 8, installSolid Waste5. Unpin, deploy toilet6. Remove toilet lid, temp stow in privacy curtain7. Install fecal bag in toilet8. Turn on waste fan, confirm airflowUrine9. Turn on waste fan 10. Destow funnel, confirm airflow
Dragon Abort QRHMost 2 'X' (2nd stage aborts) are performed without the trunk (vs stage 1 modes 1A + 1B with trunk for aerodynamic reasons). This makes sense as you are already high enough in the atmosphere and you want the additional performanceAdditionally, it appears that not all the abort thrust directions are entirely prograde? Some 2X aborts appear to be firing partially retrograde. Is this for g loading / to make a recovery zones?