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#1 2018-04-30 20:50:27

EdwardHeisler
Member
Registered: 2017-09-20
Posts: 357

Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

A SLS rocket that doesn't exist yet and won't fly for years!    Boeing forgot to mention the BFR.   Ed Heisler

The following is posted at Boeings website:

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In February, Elon Musk’s SpaceX test launched the Falcon Heavy — a rocket that SpaceX touts as the “most powerful operational rocket in the world.”

However, the Falcon Heavy failed to impress the spaceflight department at NASA. Bill Gerstenmaier, the head of spaceflight at NASA, said the Falcon Heavy is“too small”for NASA’s needs.

Ouch.

boeingwuf_email_falconheavy.jpg

Gerstenmaier went even further, stating that NASA’s exploration programneeds the “unique capabilities of the SLS rocket.”

The Boeing-built SLS rocket is the only spaceflight vehicle that can provide NASA the tools it needs for deep space exploration. The SLS can bring equipment into space that is too large for the Falcon Heavy.

The Falcon Heavy launch turned heads in February, but SpaceX’s rocket is a smaller type of rocket that can’t meet NASA’s deep space needs. Once theBoeing-built SLSis operational, it will be the most powerful rocket ever built.

Watch U.S. Fly will keep you updated as the competition between Boeing and SpaceX heats up.

https://watchusfly.com/nasa-spacex-falc … ploration/

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The response from ARS Technica

Boeing blast —
Boeing slams the Falcon Heavy rocket as “too small”
"SpaceX's rocket is a smaller type of rocket that can't meet NASA's deep-space needs."
by Eric Berger - 4/30/2018

Recently, Boeing created a website called "Watch US Fly" to promote its aerospace industry—a grab bag of everything from Chinese tariffs to President Trump's visit to the company's facilities in St. Louis. Among the most intriguing sections is one that promotes the company's Space Launch System rocket and argues that SpaceX's Falcon Heavy booster is "too small" for NASA's deep exploration program.

"The Falcon Heavy launch turned heads in February, but SpaceX's rocket is a smaller type of rocket that can't meet NASA's deep-space needs," the website states. "Once the Boeing-built SLS is operational, it will be the most powerful rocket ever built."

The Boeing site backs up this claim by quoting NASA's Bill Gerstenmaier, who talked about the differences between the SLS rocket and Falcon Heavy at a meeting of the NASA Advisory Council meeting in March. Gerstenmaier, the chief of NASA's human spaceflight program, said the SLS had "unique capabilities" that the Falcon Heavy rocket does not have. However, as Ars reported at the time, Gerstenmaier actually struggled to explain why NASA needed the SLS rocket because the space agency has not yet built anything that will take advantage of those capabilities.

The SLS promotional website also makes some questionable assertions. It speaks of the super-powerful SLS rocket as if it will soon exist. But the SLS booster is probably at least two years away from its maiden flight. Moreover, the version of the SLS rocket that flies in two years will not come close to being the "most powerful rocket ever built." That will come much later, if ever.

Most powerful rocket

The "most powerful" title belongs to the Saturn V rocket. NASA used them in the 1960s and 1970s for the Apollo program, and they had the capability to lift 118 metric tons to low Earth orbit. The initial configuration of the SLS booster will be able to lift 70 tons to low Earth orbit, which is marginally more than the Falcon Heavy and its 64 tons. (Compared to the Falcon Heavy, the SLS will have a more powerful upper stage, enabling it to send more mass into deep space).

NASA does have plans to upgrade the SLS rocket to a 105-ton configuration, but this will not occur until at least the mid-2020s and will probably cost several billion dollars as NASA contracts with Boeing to build an entirely new upper stage. Finally, the 130-metric-ton version—the "most powerful rocket ever built"—has no real timetable. Certainly, it seems unlikely to fly within the next decade.

By then, the proposed 130-metric-ton SLS may well be superseded by the Big Falcon Rocket under development by SpaceX or Blue Origin's proposed New Armstrong booster. In any case, comparing the Falcon Heavy to a rocket that won't exist for at least a decade and without many billions of dollars in public investment seems spurious. Boeing also makes no mention of the huge cost disparity between the two rockets.

There is one final interesting nugget on the Boeing website. The end of the SLS blurb invites readers to "Learn more about why the SLS is the right choice for NASA" by linking to a news story in the London Evening Standard. This is a conservative British tabloid owned by a Russian oligarch and former KGB agent, Alexander Lebedev.

The author of the Evening Standard story, an online general assignments reporter named Sean Morrison, did not listen to the NASA Advisory Council meeting where Gerstenmaier commented about the SLS' capabilities. Rather, he quoted (without linking) from another news article from the "technology news website Ars Technica."

https://arstechnica.com/science/2018/04 … too-small/

Last edited by EdwardHeisler (2018-04-30 20:51:27)

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#2 2018-05-01 02:38:33

elderflower
Member
Registered: 2016-06-19
Posts: 1,262

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

Boeing are a bit worried about the prospect of their gravy train coming off the rails, I suppose. Denigrating the competition and it's products is standard practice, its called "knocking copy" in advertising, and it doesn't work very well to sell your product.

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#3 2018-05-01 02:51:08

louis
Member
From: UK
Registered: 2008-03-24
Posts: 7,208

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

As they say, you start getting flak when you are over the target...except in this case, ironically, Musk isn't really targetting Boeing or NASA. The SLS is being made irrelevant simply because Musk wants to get to Mars as quickly as possible. If Boeing and NASA had developed something like the SLS years ago, Musk would have been happy to use that to get to Mars. His interest in rocketry developed because of his frustration at finding no one could get him to Mars.


Let's Go to Mars...Google on: Fast Track to Mars blogspot.com

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#4 2018-05-01 06:27:52

Terraformer
Member
From: Ceres
Registered: 2007-08-27
Posts: 3,818
Website

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

Watch as NASA develop 65 tonne payloads, in order to show that the Falcon Heavy is too small and they need the SLS.

Do they actually have any current plans which need even the FH?


"I'm gonna die surrounded by the biggest idiots in the galaxy." - If this forum was a Mars Colony

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#5 2018-05-01 07:44:17

louis
Member
From: UK
Registered: 2008-03-24
Posts: 7,208

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

I did wonder that myself...I think they might have plans for some super-telescope...not sure.

Terraformer wrote:

Watch as NASA develop 65 tonne payloads, in order to show that the Falcon Heavy is too small and they need the SLS.

Do they actually have any current plans which need even the FH?


Let's Go to Mars...Google on: Fast Track to Mars blogspot.com

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#6 2018-05-01 19:01:25

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 28,882

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

There were some other suggested uses but it comes back to how much for the launch that nasa will be charged....
Boeing could be under pricing when it comes to the finish product since they have already gotten fat as a hog but most likely we can blame it on the Nasa contract writers.

Sure we could hand off the redesign of some of the parts for better reusability beyond the SRB's but even that will only be a short term as Nasa wants to keep upping the total launch mass to orbit.

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#7 2018-05-01 19:13:30

kbd512
Administrator
Registered: 2015-01-02
Posts: 7,431

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

At this point, there are no payloads that require a rocket larger than Falcon Heavy.  NASA is spending nearly all available human space flight program development funding on Orion and SLS and there's nothing left for anything else.  I'm not sure what good the mega rocket will do, if it ever flies, when there's nothing available to fly on it.  SLS might be able to send probes directly to Neptune or Uranus, which would be scientifically interesting since we know so little about those planets, but ion propulsion can supply even greater dV increments for far less thrown mass.

I heard a lady from NASA recently complain in a YouTube video that they'd have to assemble payloads at ISS if they used Falcon Heavy, to which I uselessly screamed at my computer, "That was one of NASA's reasons for creating ISS!"  These people are seriously thick-headed in their approach to affordable space exploration.

I think BFR is the wrong approach to Mars exploration and colonization if cost reduction is Mr. Musk's goal.  I would use cyclers (not real cyclers since they stop in orbit at Earth and Mars) to ferry people to Mars using artificial gravity spinning wheels using ion propulsion.  The cyclers would spiral to GEO after assembly in LEO at ISS.  The number of colonists can be adjusted by increasing the number of wheels and propellant quantity in a stack.  The BFR would go to GEO at Earth and Mars to drop off humans and cargo, then return to the surface of Earth or Mars.

I see no point to SLS at this juncture, but I'm sure we'll keep spending billions on it when that money would be better spent on payloads that Falcon Heavy could deliver faster and cheaper.  Since the total tankage volume of BFS stays roughly the same if it were switched to LOX/LH2 from LOX/LCH4, I would switch the BFS over to five restartable RS-25's.  The thrust produced by the RS-25 is almost the exact same value that Musk said he wanted to achieve.  For refueling BFR on Mars, a water electrolysis plant and cryocooler has to be more compact and cheaper to develop than a Sabatier reactor.  That's a better use of the most expensive reusable rocket engine known to man.  The RS-25's have had long lives and the procedures for servicing them are down to a science.  NIH on the part of both NASA and SpaceX will preclude this from ever happening.

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#8 2018-05-01 20:56:30

Oldfart1939
Member
Registered: 2016-11-26
Posts: 2,384

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

At this juncture, we really don't know the final capacity of the Falcon Heavy using the Block 5 boosters. Musk made a statement in passing that there would be another performance upgrade with them, so incorporation into the FH system could conceivably surpass the 63 Tonne LEO capability stated on the SpaceX website

Last edited by Oldfart1939 (2018-05-01 20:57:48)

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#9 2018-05-01 23:30:43

RobertDyck
Moderator
From: Winnipeg, Canada
Registered: 2002-08-20
Posts: 7,811
Website

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

Oldfart1939 wrote:

At this juncture, we really don't know the final capacity of the Falcon Heavy using the Block 5 boosters. Musk made a statement in passing that there would be another performance upgrade with them, so incorporation into the FH system could conceivably surpass the 63 Tonne LEO capability stated on the SpaceX website

SpaceX website
FalconHeavy2018.png
Payload to LEO is defined as 185km altitude at the same orbital inclination as the latitude of the launch site. That's the lowest inclination possible for any launch site; makes maximum use of rotation of the Earth. In the case of Falcon Heavy, payload to LEO is defined as 28.5° inclination, while payload to GTO is defined as 27° inclination. Maximum payload is with everything fully expendable. The above image capture is accurate as of the time I post this. That means with Block 4 boosters.

My question is what's the capacity to TLI with all 3 core boosters recovered, not to landing zones on land, but to drone ships at sea? And what's the capacity with side boosters recovered to ships, but the central core booster expended? In both cases with Block 5 boosters. And no fairing, instead launching Dragon. That's important because dragon has a narrower diameter than the standard fairing, which means lower aerodynamic drag while passing through atmosphere.

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#10 2018-05-02 00:50:46

kbd512
Administrator
Registered: 2015-01-02
Posts: 7,431

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

All I want to do is ship 50t payloads to ISS, maybe less.  I want empty habitation shells sent there for mating to propulsion units.  It'll be the same solid core concept that Bigelow Aerospace uses, but with an inflatable spoked wheel section to provide artificial gravity.  The unit will be inflated at ISS and attached to a propulsion module containing solar arrays, a reaction control system, and ion engines.  I'm calling this combination of habitat and propulsion module the "Real ITS" or "RITS" (like the Ritz-Carlton, but without room service), since it can take people from Earth orbit to Mars orbit and back again.  All joking aside, the unit spirals to GEO where BFS meets up with RITS to transfer crew and consumables.  If everything is good to go, RITS performs TMI.  If not, the crew aborts to Earth aboard BFR.  A separate set of BFR's will stay on Mars, only going to and from Mars orbit, never to return to Earth.

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#11 2018-05-02 18:18:58

SpaceNut
Administrator
From: New Hampshire
Registered: 2004-07-22
Posts: 28,882

Re: Boeing Claims SpaceX Falcon Rocket Can't Compete With Their SLS Rocket

I can not see why Nasa is thinking that it needs chunks of payloads so large that it tries to lobe them into space as a single piece rather than on a smaller rocket at a lower cost.

Forget the Falcon Heavy’s payload and focus on where the rocket will go from a news conference back in Washington, DC, US, on Tuesday, April 5, 2011.

SpaceX will have nearly tripled the capability of the Falcon 9 rocket from 2011 to 2018, the period between the unveiling of the Falcon Heavy and its eventual flight. This means that many of the heavier payloads that once might have flown on the bigger rocket can now be accommodated by the single core Falcon 9.

The inflation-adjusted cost of a Falcon 9 from 2011 to now is $55 million, which is only slightly less than the actual $62 million price tag on a modern Falcon 9 rocket (which has more than twice the performance of the version 1.0 booster). And the Falcon Heavy price is now $90 million, less than the quoted price in 2011.

Musk's Falcon Heavy Packs A Huge Payload [Infographic]

Its 27 Merlin engines are capable of generating nearly 23,000 kilonewtons of thrust and that's slightly more than double that of United Launch Alliance's Delta IV Heavy which was the world's most powerful operational rocket. That immense level of thrust means the Falcon Heavy will be able to pack an impressive payload. It will be able to lift nearly 141,000lbs (64 metric tons) into orbit, also more than double the Delta IV Heavy and at a third of the cost, according to SpaceX.

20180206_Forbes_FalconHeavy.jpg

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