Delta N6 no. 81 - Delta N6 no. 81 - COSPAR 1970-106 11,461 bytes. 100 x 399 pixels.

Launches: 9. Failures: 1. Success Rate: 88.89% pct. First Launch Date: 16 August 1968. Last Launch Date: 12 March 1972. Liftoff Thrust: 218,290 kgf. Total Mass: 102,907 kg. Core Diameter: 2.4 m. Total Length: 33.0 m. Flyaway Unit Cost $: 18.82 million. in 1985 unit dollars.

• Stage Number: 0. 6 x Castor 2 Gross Mass: 4,424 kg. Empty Mass: 695 kg. Thrust (vac): 26,402 kgf. Isp: 262 sec. Burn time: 37 sec. Isp(sl): 232 sec. Diameter: 0.8 m. Span: 0.8 m. Length: 6.0 m. Propellants: Solid No Engines: 1. TX-354-3

• Stage Number: 1. 1 x Delta Thor LT Gross Mass: 70,354 kg. Empty Mass: 3,715 kg. Thrust (vac): 88,380 kgf. Isp: 290 sec. Burn time: 215 sec. Isp(sl): 256 sec. Diameter: 2.4 m. Span: 2.4 m. Length: 21.4 m. Propellants: Lox/Kerosene No Engines: 1. MB-3-3

• Stage Number: 2. 1 x Delta E Gross Mass: 6,009 kg. Empty Mass: 785 kg. Thrust (vac): 3,579 kgf. Isp: 278 sec. Burn time: 400 sec. Isp(sl): 0 sec. Diameter: 1.4 m. Span: 1.4 m. Length: 6.3 m. Propellants: Nitric acid/UDMH No Engines: 1. AJ10-118E

• ESSA 7 Spacecraft: TOS. Payload: TOS E. Mass: 145 kg.

  Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

• ESSA 8 Spacecraft: TOS. Payload: TOS F. Mass: 132 kg.

  Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

• Biosatellite 3 Spacecraft: Biosatellite. Payload: Biosat 3. Mass: 695 kg.

  Biological capsule reentered 7/7/69. The intent had been to fly a 6 kg male pig-tailed monkey (Macaca nemestrina) named Bonnie in Earth-orbit for 30 days. However, after only 8.8 days in orbit, the mission was terminated because of the subject's deteriorating health. High development costs were a strong incentive for maximising the scientific return from the mission. Because of this, the scientific goals had become exceedingly ambitious over time, and a great many measurements were conducted on the single research subject flown. Although the mission was highly successful from a technical standpoint, the science results were apparently compromised. Additional Details: Biosatellite 3.

• OSO 6 Spacecraft: OSO. Payload: OSO G. Mass: 290 kg.

  Orbiting Solar Observatory; solar physics experiments. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

• PAC 1 Spacecraft: PAC. Mass: 120 kg.

  Package Attitude Control; semi-active gravity gradient stabilization tests. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A).

• Oscar 5 Spacecraft: Oscar. Payload: Australis-Oscar 5. Mass: 18 kg.

  Australis-OSCAR 5 was launched piggyback with ITOS-1 (TIROS-M weather satellite. Weight 17.7 kg (9 kg of which was battery mass). Box shaped 304 x 431 x 152 mm. 2 meter monopole and 10 meter dipole antennas. It was the first amateur satellite to be remotely controlled. Built by students at The University of Melbourne, Melbourne, Victoria, Australia. Battery powered, Australis-OSCAR 5 transmitted telemetry on both 2 meter (144.050 MHz at 50 mW) and 10 meter (29.450 MHz at 250 mW) bands that operated for 23 and 46 days respectively. Passive magnetic attitude stabilization was performed by carrying two bar magnets to align with the Earth's magnetic field in order to provide a favorable antenna footprint. The University of Melbourne compiled tracking reports from hundreds of stations in 27 countries.

• ITOS 1 Spacecraft: ITOS. Payload: Tiros M. Mass: 309 kg.

  Improved TIROS Operational Satellite. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

• NOAA 1 Spacecraft: ITOS. Payload: ITOS A. Mass: 306 kg.

  Built for NASA; operated by NOAA. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C).

• CEPE

• TETR 3 Spacecraft: TETR. Payload: TETR D. Mass: 20 kg.

  Test satellite for NASA's Manned Space Flight Network. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

• OSO 7 Spacecraft: OSO. Payload: OSO H. Mass: 635 kg.

  Orbiting Solar Observatory. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B).

• ITOS B Spacecraft: ITOS. Payload: ITOS B. Mass: 308 kg.

  Unusable orbit. Spent boosters, spent maneuvering stages, shrouds and other non-functional objects (US Cat D).

• TD-1A; Thor Delta 1A Spacecraft: TD-1A. Payload: TD 1A. Mass: 472 kg.

  Sixth satellite of ESRO. Also registered as US object 1972-14A in A/AC.105/INF.255 with orbit 95.3 min, 525 x 548 km x 97.5 deg, category B.

• 34 - Gatland, Kenneth, Missiles and Rockets, Macmillan, New York, 1975.
• 140 - Wilson, Andrew, Spaceflight, "Delta Digest", 1979, Volume 10, page 413.