From Vladimir Agapov

(KIAM RAN)

August 3, 1995

Here is detailed pre-launch information about Interbol (Prognoz-M2). Launch 03.08.95 02:59:10.90 DMV (02.08.95 23:59:10.90 UTC) 04.08.95 02:55:14.34 DMV (03.08.95 23:55:14.34 UTC) Launch window - 10 min Launch site - Plesetsk, LC43, Pad 3 Launcher - Molniya-M (8K78M with 2BL-SM2 upper stage (4th stage)) Payload - Prognoz-M2 (SO-M2 N512) + Magion-4 Launcher's characteristics 1st stage 2nd stage 3rd stage 4th stage Empty mass, tonns 4 x 3.770 6.798 1.976 2.05 Full mass, tonns 4 x 43.3 100.6 24.8 5.82 Mass of oxidizer, tonns 4 x 27.8 64 15.7 2.66 Mass of fuel, tonns 4 x 11.8 26.3 7.1 1.11 Sea level thrust, tonns 4 x 82.9 79.4 - - Vacuum thrust, tonns 4 x 101.5 99.6 30.4 6.8 Launch mass of the launcher with the payload - 305481 kg Length of the launcher with payload's shroud - 43.44 m Mass of the upper stage (without mass of the shroud) - 6260 kg including empty mass of the 2BL - 896.7 kg mass of the BOZ block - 328.7 kg (BOZ - 'Blok obespecheniya zapuska' on Russian or 'launching provision block') spacecraft's mass - 1250 kg mass of oxidizer - 2662.1 kg mass of fuel - 1112.0 kg Mass of the shroud - 825 kg Main engine of the Block 2BL - 11D33 Launch countdown: Lift-off - T Separation of the 1st stage (4 strap-ons) - T+120.18 s Separation of the shroud - T+166.62 s The 2nd stage's engines cut off - T+289.90 s Separation of the 2nd stage - T+292.15 s The 3rd stage's engine cut off - T+532.63 s Separation of the upper stage with payload - T+535.93 s Command on ignition of powder thrustors of the BOZ block - T+3679.692 s 75% level of the 11D33 engine's thrust, separation of the BOZ block - T+3720.692 s Command on the 2BL block's engine cut off - T+3869.597 s Command on separation of the payload - T+3904.597 s Separation of the payload from the 4th stage - T+3904.627 s Point of separation : latitude - 35.464 S longitude - 272.168 E altitude - 818.656 km Pre-launch vector on T+535.93 s in EFG t 00:08:06.83 UTC x 1122.304 km y 3268.841 km z 5626.466 km vx -5.247745 km/s vy 5.269865 km/s vz -2.039442 km/s Pre-launch vector on T+3904.627 s in EFG t 01:04:15.527 UTC x 221.752 km y -5851.584 km R = 7189.601 km z -4171.349 km V = 10345.189 m/s vx 5.567292 km/s vy -5.132391 km/s vz 6.702181 km/s Elements of an osculating orbit at T+3904.627 s Semimajor axis a 103276.495 km Eccentricity e 0.93053 Argument of perigee w 314.000 deg Inclination i 62.821 deg RAAN 309.936 deg (in Greenwich fixed on the time of launch) True anomaly 5.292 deg Nodical period T 91.7 h Apogee height 796.7 km (above Earth's ellipsoid) Perigee heihgt 193000.3 km

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