Grumman Space Shuttle : Design 518 & 532 to H-33

hesham

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Hi,

I found that report about the Grumman H-33,they said it was drawing number
518,and I don't know if they mean G-518 or not.

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19720005228_1972005228.pdf
 

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Stargazer2006

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The G-518 appears in my list as an "early orbiter project" so I guess it's safe to say that this is indeed a Model G-518 related proposal.
 

circle-5

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Stargazer2006 said:
The G-518 appears in my list as an "early orbiter project" so I guess it's safe to say that this is indeed a Model G-518 related proposal.

The Grumman Design 518 orbiter was an entirely different vehicle. See attached photos of the correct 518 orbiter, from the Grumman model shop. Note how the number 518 is cleverly painted on the orbiter's vertical fin.
 

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Stargazer2006

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circle-5 said:
The Grumman Design 518 orbiter was an entirely different vehicle.

Maybe so. But then the same model number could refer to quite a series of alternate designs. In case you did not see it in the photograph, it says "DRAWING NUMBER: 518 MOD 826". It seems logical that "518" indicates the model and "826" the variant.
 

Nik

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Re: Grumman 518

That's a very handsome bird...

I like the proportions, the dihedral...

Thank you.
 

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Another view of the 1970 Grumman Design 518 Orbiter model, plus a Grumman rendering of the 518 separating from its manned booster, plus a rendering of the H-33. Let's see if the H-33 has anything in common with Design 518, that would justify identical model numbers.

The H-33 was proposed later, in 1971, during the third contract of Shuttle Phase B studies; it had three, smaller main engines instead of two on the 518; it used a completely different, Boeing G-3 booster and was attached in a dorsal, not ventral, configuration; it was much smaller than the 518 and was not fully reusable. It was considered a stage-and-a-half design, while the 518 was fully reusable. The H-33 relied on two disposable LH2 external tanks (over 25 metric tons ea.) mounted on the fuselage sides, whereas the 518 carried all of its propellants internally -- note H-33 wind tunnel model photo caption: without external tanks. Design 518 had a radically different, lifting body type airframe; it also had a much higher staging velocity than the H-33, and the list goes on. Of course, the anti-glare shields on both orbiters are black, so that could make them "related" projects.

It is, in fact, *not* correct to assume that Drawing Number 518 could be anything other than just that -- a drawing number. The actual item Description in Hesham's document is "Basic H-33 Orbiter Body". It appears just above said drawing number.

Both renderings were lifted off the Internet -- thank you to the forgotten sources.
 

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circle-5

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And here is a 3-View drawing of the Grumman H-33 orbiter, from the NTRS document.
 

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Triton

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Grumman Boeing H33 space shuttle booster, sans orbiter, concept model found on eBay.

URL:
http://www.ebay.com/itm/Original-Vintage-1960s-Experimental-Grumman-Boeing-Space-Shuttle-Desktop-Model-/270863765527?pt=LH_DefaultDomain_0&hash=item3f10bd1017

Seller's description:
Original experimental concept flyback space shuttle booster. This is a Grumman Aerospace Corporation-Boeing concept. I do not believe very many of these desktop models were made. I have done a fair amount of research and have only located one other one.The other is on display at the Smithsonian in New York City [sic]. It is 17 1/2 inches tall with a 11 inch wingspan. This model originally had a orbiter vehicle attached to the back of the booster. It has not been with the booster since I have owned it. The booster is in good condition but does have several paint chips that are visibly seen in the photos provided.
 

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Triton

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Grumman Boeing H33 space shuttle booster, sans orbiter, concept model found on eBay.
 

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hesham

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circle-5

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Grumman H-33: yes. Grumman Design 518: no.
 

Stargazer2006

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circle-5 said:
Grumman H-33: yes. Grumman Design 518: no.

If you know more about the designations used by Grumman for the H-33, please tell us.

What I have in my list is that the G-518 slot was used for a series of orbiter projects, including H-33 (518 MOD 826).
 

overscan (PaulMM)

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Hopefully this hasn't been posted before - I came across it while looking for something else:

 

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hesham

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Amazing find my dear Paul,

and this report solves the problem in the H-33 topic;
 

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Archibald

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What a truly astonishing report. Packed with beautiful pictures. also exploring the feasibility of a F-1 powered booster, which made so much sense.
 

circle-5

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Factory model of the Grumman Design 518 Orbiter. Until this report, I had no idea the front panel line was for a swing-nose and the ones just behind the flight deck were for pop-out pairs of turbojets. What an exceptional document!
 

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soloseven

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I just purchased this very model off eBay that is pictured in the report. Design 532.
Only the booster with the 5 F1 engines, too bad the orbiter has been lost to time.
This booster had 5 F1 engines and would fly back! Woof! What a monster.
 

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overscan (PaulMM)

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I just purchased this very model off eBay that is pictured in the report. Design 532.
Only the booster with the 5 F1 engines, too bad the orbiter has been lost to time.
This booster had 5 F1 engines and would fly back! Woof! What a monster.

The late John Aldaz (circle5) had the orbiter and was desperate to buy the booster, and his collection has been sold on, so the orbiter is out there somewhere.
 

Crackerbarrel67

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I just purchased this very model off eBay that is pictured in the report. Design 532.
Only the booster with the 5 F1 engines, too bad the orbiter has been lost to time.
This booster had 5 F1 engines and would fly back! Woof! What a monster.
Its large...more like a piece of furniture than a model. I am boxing it up for shipment.... Hodson2000@aol.com
 

TimothyC

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Hopefully this hasn't been posted before - I came across it while looking for something else:

Thank you for having posted that link Paul. I used it as a major reference to my lasted twitter thread:
View: https://twitter.com/ArnieHolmes/status/1391963028711780353
 

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