Does anyone know the exact dimensions of the BGRV, especially the overall length?

[alpha_k]

Yengst says the first cone is 36 inches long, but that doesn't fit with the overall length and the half‑angles. Is that a mistake? And does the total length include the RCS ball at the tail? Looking for verified numbers.

 

[alpha_k]

Brulle apparently provides a completely different 122 configuration from what Yengst described. So which one is the real 1968 BGRV version?

 

[Sferrin]

Could be one mixed up dimensions with Alpha Draco. Yengst talks about both of them as I recall.

 

[Scott Kenny]

Could be one mixed up dimensions with Alpha Draco. Yengst talks about both of them as I recall.

No, that can't be right. Alpha Draco is 312-313"/26ft long, 31" in diameter, and the cone section alone is 156"/13ft long. It's a really freaking big thing!

 

[Sferrin]

Pg 167 from Bruelle. There are two different programs being discussed in both documents: Alpha Draco and BGRV. This is BGRV. Atlas is 10' in dia.

 

[Scott Kenny]

Pg 167 from Bruelle. [...] This is BGRV.

Jeez, that's only a little shorter than Alpha Draco! 23ft instead of 26ft.

So much for packing either one into an SLBM.

 

[alpha_k]

Pg 167 from Bruelle. There are two different programs being discussed in both documents: Alpha Draco and BGRV. This is BGRV. Atlas is 10' in dia.

Brulle's drawing is almost completely different from Yengst's. The overall length, first-cone half-angle, number of tail control fins, and the degree of tail-fin flare and contraction are all different — and it doesn't match any known BGRV photos, including the museum images. Brulle is clearly describing an unknown version of the 122 vehicle.

 

[Sferrin]

Brulle's drawing is almost completely different from Yengst's. The overall length, first-cone half-angle, number of tail control fins, and the degree of tail-fin flare and contraction are all different — and it doesn't match any known BGRV photos, including the museum images. Brulle is clearly describing an unknown version of the 122 vehicle.

Where does Yengst even give dimensions for BGRV? BGRV and 122 are two different vehicles.

BGRV is the one on Atlas. 122 is the one in post #3 up the page.

 

[alpha_k]

Where does Yengst even give dimensions for BGRV? BGRV and 122 are two different vehicles.

BGRV is the one on Atlas. 122 is the one in post #3 up the page.

Yengst of course gave BGRV parameters — including the overall length

 

[Sferrin]

Well on the previous page he also says this. So the other guy is probably correct.