SpaceX launches - Drone ship landings lost signal mystery

Tony C. · May 31, 2020

Hey - at least there weren't any steel framed buildings collapsing at near free-fall speeds into their own footprints due to fires! 😉

Foo2rama · May 31, 2020

Tony C.
Hey - at least there weren't any steel framed buildings collapsing at near free-fall speeds into their own footprints due to fires! 😉

Not funny if your an American, it’s a stupid conspiracy theory to both sides of the political spectrum and not worth joking about... and that’s the last I’ll say to that.

Tony C. · May 31, 2020

Foo2rama
Not funny if your an American, it’s a stupid conspiracy theory to both sides of the political spectrum and not worth joking about... and that’s the last I’ll say to that.

There are countless engineers and architects who disagree completely with you, and the evidence is on their side, including the recently concluded, several year study by researchers at the University of Alaska Fairbanks, entitled: A Structural Reevaluation of the Collapse of World Trade Center 7

Foo2rama · May 31, 2020

Tony C.
There are countless engineers and architects who disagree completely with you, and the evidence is on their side.

There is one main and he got his doctorate on how Jesus helped the Mayans build their temples. The other 99.99999% of material and structural engineers understand melting points, deformation temps and shear forces.
There are always loonies and so called experts that claim otherwise.... looks at AS LE’s.... doesn’t mean they are right.

Tony C. · May 31, 2020

Foo2rama
There is one main and he got his doctorate on how Jesus helped the Mayans build their temples. The other 99.99999% of material and structural engineers understand melting points, deformation temps and shear forces.
There are always loonies and so called experts that claim otherwise.... looks at AS LE’s.... doesn’t mean they are right.

That's an ad hominem attack, which suggests that you are not interested in facts. There are well over three thousand public signatories who have expertise on the subject.

Here is a link to a pdf file of the above-mentioned study. Feel free to attempt to refute it.

https://files.wtc7report.org/file/p...ollapse-of-World-Trade-Center-7-March2020.pdf

Its conclusion, in brief:

It is our conclusion that the collapse of WTC 7 was a global failure involving the near-simultaneous failure of all columns in the building and not a progressive collapse involving the sequential failure of columns throughout the building.

Despite simulating a number of hypothetical scenarios, we were unable to identify any progressive sequence of failures that could have taken place on September 11, 2001, and caused a total collapse of the building, let alone the observed straight-down collapse with approximately 2.5 seconds of free fall and minimal differential movement of the exterior.

alam · May 31, 2020

oh not again.. 9/11 conspiracy theories. ::facepalm1::

Foo2rama · May 31, 2020

In other news the SpaceX DEMO real...

Just Livin · May 31, 2020

alam
oh not again.. 9/11 conspiracy theories.

I have to say, I did love this movie

Tony C. · May 31, 2020

alam
oh not again.. 9/11 conspiracy theories.

The use of that phrase is typically employed in place of facts. If you can direct readers to a compelling, fact-based explanation of how WTC7 could have collapsed from relatively small, asymmetric office fires and debris damage, I, and millions of other people, including thousands of experts (at least), would like very much like to see it.

alam · May 31, 2020

Tony C.
The use of that phrase is typically employed in place of facts. If you can direct readers to a compelling, fact-based explanation of how WTC7 could have collapsed from relatively small, asymmetric office fires and debris damage, I, and millions of other people, including thousands of experts (at least), would like very much to see it.

Yes, Tony - all the events that took place that day were orchestrated by the U.S. Government...got it. Let’s move on to another subject.

Foo2rama · May 31, 2020

Tony C.
That's an ad hominem attack, which suggests that you are not interested in facts. There are well over three thousand public signatories who have expertise on the subject.

Here is a link to a pdf file of the above-mentioned study. Feel free to attempt to refute it.

https://files.wtc7report.org/file/p...ollapse-of-World-Trade-Center-7-March2020.pdf

Its conclusion, in brief:

It is our conclusion that the collapse of WTC 7 was a global failure involving the near-simultaneous failure of all columns in the building and not a progressive collapse involving the sequential failure of columns throughout the building.

Despite simulating a number of hypothetical scenarios, we were unable to identify any progressive sequence of failures that could have taken place on September 11, 2001, and caused a total collapse of the building, let alone the observed straight-down collapse with approximately 2.5 seconds of free fall and minimal differential movement of the exterior.

Yes considering they said the metal never broke 700 degrees, but they ignored the multiple studies that showed by testing the metal it broke 1,200 degrees.

Oh the peer reviewer that has since retracted his blessing on the paper as it has come to be shown it drew bad conclusions and why and how they did.
https://journals.sagepub.com/doi/abs/10.1260/2041-4196.4.2.117

Tony C.
The use of that phrase is typically employed in place of facts. If you can direct readers to a compelling, fact-based explanation of how WTC7 could have collapsed from relatively small, asymmetric office fires and debris damage, I, and millions of other people, including thousands of experts (at least), would like very much to see it.

The final report worked on by 100's of people with access to the wreckage that fully explains in detail how it happened.
https://www.nist.gov/el/final-reports-nist-world-trade-center-disaster-investigation

Unless you think hundreds of people faked that report and paid off the independent testing of materials to falsify the data. Before you claim but its GOV... yeah bipartisan people of all backgrounds without any allegiance to the president would have to be in on it, and not a single one decided to come forward and say they were asked to falsify data...

But sure tons of explosives were mounted all over the building and no one noticed, all the drilling on every floor into the concrete columns. No one noticed any large scale construction work, or lines of det cord mounted anywhere. As this would have had to been a multiple week process, the fact no one came across any signs of these in everyday work... makes total sense, but if you want to disrespect the lives that where lost in all countries by the fallout of this event sure believe what you want. Rumsfeld and Bush can still be evil and everything was done by terrorists.

Omegafanman · May 31, 2020

I feel this is heading a bit of topic - Back to SpaceX (a company I would probably work for given have a chance). What I am saying is there is a discrepancy in the live feed from the drone ships for the central stage landings. It is reasonable to consider this could be minor media manipulation / a public relations delay to avoid risk when the stage returns ( since they have a high failure rate and you don't want an explosion to spoil a seamless launch narrative). Equally there might be a very valid technical reason. Either way it is a point worth exploring IMHO. Even with a high failure rate it is impressive technology which will improve over time. I am interested if anyone has the live feed from the star man drone ship landing coverage - the reaction from the two talking heads was what lead me to take an interest in this. The 'lost feed' graphic is a great improvement. If people want to set up a conspiracy thread for Kennedy assassination etc - feel free to do that and get deleted. Mine is meant to be a factual discussion around why the feed is lost from the drone ships.

Professor · May 31, 2020

Well first off that strange blurry object in the sky is Mad Dog trying out his new Bell Jet Pack.

For the Rosie O'Donnells in the crowd , check this out

Tony C. · May 31, 2020

Foo2rama
Yes considering they said the metal never broke 700 degrees, but they ignored the multiple studies that showed by testing the metal it broke 1,200 degrees.

This is from the official NIST report (bold emphasis mine):

Due to the effectiveness of the spray-applied fire-resistive material (SFRM) or fireproofing, the highest steel column temperatures in WTC 7 only reached an estimated 300 degrees C (570 degrees F), and only on the east side of the building did the steel floor beams exceed 600 degrees C (1,100 degrees F).

I won't comment further on this thread, and apologies for the diversion.

Professor · May 31, 2020

" Strength loss for steel is generally accepted to begin at about 300°C and increases rapidly after 400°C. By 550°C steel retains approximately 60% of its room temperature yield strength, and 45% of its stiffness. At high temperatures, steel is also subjected to significant thermal elongation, which may lead to adverse impacts, especially if it is restrained. It follows therefore that one would expect that structural steelwork which has been subjected to high temperatures would exhibit signs of this in the form of distortion and buckling."

"At 600°C the yield strength and stiffness of steel is equal to about 40% and 30% respectively of their room temperature values;"

https://www.steelconstruction.info/Fire_damage_assessment_of_hot_rolled_structural_steelwork

Foo2rama · May 31, 2020

Omegafanman
I feel this is heading a bit of topic - Back to SpaceX (a company I would probably work for given have a chance). What I am saying is there is a discrepancy in the live feed from the drone ships for the central stage landings. It is reasonable to consider this could be minor media manipulation / a public relations delay to avoid risk when the stage returns ( since they have a high failure rate and you don't want an explosion to spoil a seamless launch narrative). Equally there might be a very valid technical reason. Either way it is a point worth exploring IMHO. Even with a high failure rate it is impressive technology which will improve over time. I am interested if anyone has the live feed from the star man drone ship landing coverage - the reaction from the two talking heads was what lead me to take an interest in this. The 'lost feed' graphic is a great improvement. If people want to set up a conspiracy thread for Kennedy assassination etc - feel free to do that and get deleted. Mine is meant to be a factual discussion around why the feed is lost from the drone ships.

actually the landing success rate is pretty amazing now. In fact in total it is over 84% successful including the testing period. In fact last year 15 out of 16 successful landings occurred. And 14 out of 15 in 2018.

Considering each rocket motor is tracked by the nerdastic members of the public they really have nothing to hide. If they where magically hiding failures and making more engines then they said they are... you’d expect at least of their thousands of idealistic young employees would blow the whistle.

I guess in theory it could be to hide the split second of flames if it is failed...

Foo2rama · May 31, 2020

Mystery Solved.

TLDR: They use a directional antenna to send the feed to a satellite, the vibrations from the rocket exhaust hitting the drone ship causes the antenna to drop lock on the satellite. They post the full landings a few days later after they retrieve the drone ship. They could fix it with another ship having an omnidirectional link to the drone ship and then linking with a satellite, but the added costs are not worth it.

SpeedyPhill · Jun 1, 2020

SpeedyPhill
little drone taking off to give You those 360° images everybody requested ?

😁
it's just dirt moving up the camera lens...

Uniqez · Jun 1, 2020

At the end of the day "trampoline is working" ladies and gentlemen... If booster was damaged, space geeks will take a pictures of it returning on the drone ship, like they always do.

Archer · Jun 1, 2020

Foo2rama
Unless you think hundreds of people faked that report and paid off the independent testing of materials to falsify the data. Before you claim but its GOV... yeah bipartisan people of all backgrounds without any allegiance to the president would have to be in on it, and not a single one decided to come forward and say they were asked to falsify data...

Spot on.