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Dsc Pub Edited 1966 65) Luna 9 began transmitting data to Earth, but Luna 9 it was 7 hours (after the Sun climbed to 7° Nation: USSR (40) elevation) before the probe began sending the Objective(s): lunar soft-landing first of nine images (including five Spacecraft: Ye-6M (no. 202) panoramas) of the surface of the Moon. These Spacecraft Mass: 1,538 kg were the first images sent from the surface of Mission Design and Management: GSMZ another planetary body. The radiation Lavochkin detector, the only scientific instrument on Launch Vehicle: 8K78M (no. U103-32) board, measured a dosage of 30 millirads per Launch Date and Time: 31 January 1966 / day. Perhaps the most important discovery of 11:41:37 UT the mission was determining that a foreign Launch Site: NIIP-5 / launch site 31 object would not simply sink into the lunar Scientific Instruments: dust, that is, that the ground could support a 1) imaging system heavy lander. Last contact with the space- 2) SBM-10 radiation detector craft was at 22:55 UT on 6 February 1966. Results: With this mission, the Soviets accom- plished another spectacular first in the space 66) race, the first survivable landing of a human- Kosmos 111 / [Luna] made object on another celestial body. Luna 9 Nation: USSR (41) was the twelfth attempt at a soft-landing by Objective(s): lunar orbit the Soviets; it was also the first deep space Spacecraft: Ye-6S (no. 204) probe built by the Lavochkin design bureau, Spacecraft Mass: c. 1,580 kg which ultimately would design and build Mission Design and Management: GSMZ almost all Soviet (and Russian) lunar and Lavochkin interplanetary spacecraft. All operations Launch Vehicle: 8K78M (no. N103-41) prior to landing occurred without fault, and Launch Date and Time: 1 March 1966 / the 58-centimeter spheroid ALS capsule 11:03:49 UT landed on the Moon at 18:45:30 UT on 3 Launch Site: NIIP-5 / launch site 31 February 1966 west of the Reiner and Marius Scientific Instruments: craters in the Ocean of Storms (at 7°8' north 1) magnetometer latitude and 64°22' west longitude). 2) gamma-ray spectrometer Approximately 5 minutes after touchdown, 3) five gas-discharge counters 1966 53 4) two ion traps and a charged-particle lunar equator. The spacecraft carried a set of trap solid-state oscillators that had been pro- 5) piezoelectric micrometer detector grammed to reproduce the notes of the 6) infrared detector Internationale so that it could be broadcast 7) low-energy x-ray photon counters live to the 23rd Communist Party Congress. Results: In early 1966, the Soviets began During a rehearsal on the night of 3 April, hastily putting together an interim lunar the playback went well, but the following orbiter program, the Ye-6S, partly to upstage morning, controllers discovered a missing the American Lunar Orbiter project and note and played the previous night’s tape to partly to commemorate the 23rd Congress of the assembled gathering at the Congress– the Communist Party held in March 1966. claiming it was a live broadcast from the Engineers quickly designed a set of two rudi- Moon. Luna 10 conducted extensive research mentary probes using the old Ye-6 (lander) in lunar orbit, gathering important data on buses for these missions. The first of them was the weakness of the Moon’s magnetic field, its prepared in less than a month but failed to radiation belts, and the nature of lunar rocks leave Earth orbit. During Earth orbit opera- (which were found to be comparable to ter- tions, the Blok L upper stage lost roll control restrial basalt rocks), cosmic radiation, and and failed to fire to send the probe towards micrometeoroid density. Perhaps its most the Moon. The official Soviet media named the important finding was the first evidence of stranded satellite Kosmos 111; it reentered mass concentrations (called “mascons”)— Earth’s atmosphere two days after launch. areas of high density below the mare basins that distort lunar orbital trajectories. Their 67) discovery has usually been credited to the Luna 10 American Lunar Orbiter series. Last contact Nation: USSR (42) was on 30 May 1966. Objective(s): lunar orbit Spacecraft: Ye-6S (no. 206) 68) Spacecraft Mass: 1,582 kg Surveyor Model 2 Mission Design and Management: GSMZ Nation: U.S. (26) Lavochkin Objective(s): highly elliptical orbit Launch Vehicle: 8K78M (no. N103-42) Spacecraft: SD-3 Launch Date and Time: 31 March 1966 / Spacecraft Mass: 784 kg 10:47 UT Mission Design and Management: NASA JPL Launch Site: NIIP-5 / launch site 31 Launch Vehicle: Atlas-Centaur (AC-8 / Atlas Scientific Instruments: no. 184D / Centaur D) 1) magnetometer Launch Date and Time: 8 April 1966 / 2) gamma-ray spectrometer 01:00:02 UT 3) five gas-discharge counters Launch Site: ETR / launch complex 36B 4) two ion traps and a charged-particle Scientific Instruments: none trap Results: This was a test to launch a dummy 5) piezoelectric micrometer detector Surveyor lunar lander spacecraft into a 6) infrared detector barycentric orbit toward a simulated Moon. 7) low-energy x-ray photon counters Unlike the two previous Surveyor mass model Results: After a midcourse correction on 1 tests, this flight was supposed to demonstrate April, Luna 10, the second of two hastily pre- a restart capability for the Centaur upper pared Soviet Ye-6S probes (that is, the stage. The Centaur-Surveyor combination backup), successfully entered lunar orbit two successfully achieved parking orbit around days later at 18:44 UT, thus becoming the Earth, but at the desired time, the Centaur first humanmade object to go into orbit engines fired for only a few seconds. A thrust around another planetary body. A 245-kilo- imbalance left the payload tumbling. The gram instrument compartment separated problem was later traced to a hydrogen per- from the main bus, which was in a 350 x oxide leak in the ullage motors of the Centaur 1,000-kilometer orbit inclined at 71.9° to the stage. With no hope of reaching its ultimate 54 Deep Space Chronicle orbit, the spacecraft reentered Earth’s atmos- face indicated that Surveyor 1 was resting in phere on 5 May 1966. a 100-kilometer-diameter crater that con- tained boulders of more than 1 meter in 69) length scattered all around. The photos Surveyor 1 showed crestlines of low mountains in the Nation: U.S. (27) distant horizon. The lander transmitted Objective(s): lunar soft-landing 11,350 images over two separate communica- Spacecraft: Surveyor-A tions sessions by 6 July. Although the pri- Spacecraft Mass: 995.2 kg mary mission was completed by 13 July, Mission Design and Management: NASA JPL NASA maintained contact until 7 January Launch Vehicle: Atlas-Centaur (AC-10 / Atlas 1967. Without doubt, Surveyor 1 was one of D no. 290 / Centaur D) the great successes of NASA’s early lunar and Launch Date and Time: 30 May 1966 / interplanetary program. 14:41:01 UT Launch Site: ETR, launch complex 36A Scientific Instruments: 1) imaging system Results: NASA initially (c. 1963) conceived of the Surveyor program as a landing and orbiting robotic lunar project, but it scaled down plans to a more specific program of ten lunar soft-landers (seven were eventually launched) geared toward basic engineering goals rather than scientific exploration. The primary “scientific instrument” was an imaging system. Unlike the Soviet Luna lan- ders, Surveyor was a true soft-lander, com- prising a 3-meter-tall vehicle based on a 27-kilogram, thin-walled aluminum trian- gular structure with one of three legs at each corner and a large solid-propellant retro- rocket engine (that comprised over 60 percent of the spacecraft’s overall mass) in the center. The spacecraft was equipped with a Doppler velocity-sensing system that fed information into the spacecraft computer to implement a controllable descent to the surface. Each of the three landing pads also carried aircraft- type shock absorbers and strain gauges to provide data on landing characteristics, important for future Apollo missions. Surveyor 1, the first in the series, was an unprecedented success. NASA accomplished the first true soft-landing on the Moon on its very first try when the probe landed in the southwest region of the Ocean of Storms at 06:17:36 UT on 2 June 1966, just 63.6 hours after launch from Cape Canaveral. Touchdown coordinates were 2°27' south lati- Image of Surveyor 1’s shadow against the lunar surface in the late lunar afternoon, tude and 43°13' west longitude, just 14 kilo- with the horizon at the upper right. Surveyor 1 was the first U.S. mission to make a meters from the planned target. At landing, successful soft-landing on the Moon. In addition to transmitting over 11,000 pictures, the spacecraft weighed 294.3 kilograms. The it sent information on the bearing strength of the lunar soil, the radar reflectivity, and initial panoramic views from the lunar sur- temperature. 1966 55 70) resolution photographs of potential Apollo Explorer 33 landing sites. NASA planned launches of a Nation: U.S. (28) series of three-axis stabilized spacecraft with Objective(s): lunar orbit four solar panels and a main engine (derived Spacecraft: IMP-D from an Apollo attitude control thruster) for Spacecraft Mass: 93.4 kg lunar orbit insertion. The primary instrument Mission Design and Management: NASA GSFC on board was a 68-kilogram Eastman-Kodak Launch Vehicle: Thor-Delta E-1 (no. 39 / Thor imaging system (using wide- and narrow- no. 467 / DSV-3E) angle lenses) that could develop exposed film, Launch Date and Time: 1 July 1966 / scan the images, and send them back to Earth.
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