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Blok D (Russian: Блок Д, lit. 'Block D') is an upper stage used on Soviet and later Russian expendable launch systems, including the N1, Proton-K and Zenit.
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stage blok used soviet launch dm engine proton-k rocket lox russian also first proton main space n1 kerosene block zenit
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Blok D | Burn time | 630 seconds | 1.00 | infobox |
| Blok D | Comparable | Briz-M | 1.00 | infobox |
| Blok D | Country of origin | Soviet Union | 1.00 | infobox |
| Blok D | Derivatives | Blok DM-03 | 1.00 | infobox |
| Blok D | Diameter | 3.70 m (12 ft 2 in) | 1.00 | infobox |
| Blok D | Empty mass | 2,140 kg (4,720 lb) | 1.00 | infobox |
| Blok D | First flight | 26 March 1974 | 1.00 | infobox |
| Blok D | Gross mass | 17,360 kg (38,270 lb) | 1.00 | infobox |
| Blok D | Height | 6.28 m (20 ft 7 in) | 1.00 | infobox |
| Blok D | Last flight | 6 May 1988 | 1.00 | infobox |
| Blok D | Maximum thrust | 83.61 kN (18,800 lbf) | 1.00 | infobox |
| Blok D | Powered by | 1 × RD-58M | 1.00 | infobox |
| Blok D | Propellant | RP-1/LOX | 1.00 | infobox |
| Blok D | Propellant mass | 15,220 kg (33,550 lb) | 1.00 | infobox |
| Blok D | Specific impulse | 363.5 s (3.565 km/s) | 1.00 | infobox |
| Blok D | Status | Retired | 1.00 | infobox |
| Blok D | Total launches | 66 | 1.00 | infobox |
| Blok D | Used on | N-1 | 1.00 | infobox |
| Blok D | Used on | Proton | 1.00 | infobox |
| Blok D | Used on | Zenit | 1.00 | infobox |
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