| 词条 | PasComSat |
| 释义 |
| name = PasComSat | image = OV1-8 PASCOMSAT Gridsphere.jpg | image_caption = OV1-08 PasComSat Grid-Sphere Satellite when inflated, showing plastic designed to later dissolve. | insignia = | mission_type = Communications Technology | operator = US Air Force | COSPAR_ID = 1966-063A | SATCAT = 2324 | mission_duration = | spacecraft_type = OV1 | manufacturer = Goodyear Aerospace[1] | launch_mass = {{convert|10.4|kg}}[2] | BOL_mass = {{convert|3.2|kg}}[1] | dimensions = {{convert|9.1|m|adj=on|sp=us}} sphere[1] | power = | launch_date = {{start-date|14 July 1966, 02:10:02|timezone=yes}} UTC[3] | launch_rocket = Atlas D OV1 | launch_site = Vandenberg ABRES B-3 | launch_contractor = US Air Force | decay_date = {{end-date|4 January 1978}}[6] | orbit_epoch = 15 August 1966[4] | orbit_reference = Geocentric | orbit_regime = Low Earth | orbit_periapsis = {{convert|955|km|mi|sp=us}} | orbit_apoapsis = {{convert|1047|km|mi|sp=us}} | orbit_inclination = 144.2 degrees | orbit_period = 105.14 minutes | apsis = gee }} Passive Communications Satellite or PasComSat, also known as OV1-8, was a communications satellite launched by USAF in 1966 as part of the Orbiting Vehicle program. The satellite functioned as a reflector, not a transceiver, so that after it was placed in low earth orbit, a signal would be sent to it, reflected or bounced off its surface, and then returned to Earth. DesignThe grid-sphere design as opposed to a fully covered sphere was aimed at reducing the effects of solar pressure and space drag found to be a problem during Project Echo. The USAF contracted with Goodyear Aerospace for construction of a {{convert|9|m|ft|sp=us}} diameter grid-sphere balloon. It was made of a soft aluminum wire grid embedded in a special plastic designed to dissolve in space under the sun's strong ultraviolet rays. On July 13, 1966, the satellite payload was launched from Vandenberg Air Force Base, California, atop an Atlas rocket. It went into orbit and was automatically inflated with helium. The plastic covering soon dissolved, leaving an open aluminum structure orbiting the earth. Tests indicated that the satellite would remain in orbit for at least 11 years and that it had a reflective power five times greater than that of a solid sphere.[5] The satellite decayed from orbit on January 4, 1978.[6] {{Clear}}See also{{Portal|Spaceflight}}
References1. ^1 2 {{cite web |url=http://space.skyrocket.de/doc_sdat/pascomsat.htm |title=PasComSat (OV1 8) |first=Gunter |last=Krebs |work=Gunter's Space Page |accessdate=7 December 2013}} {{Orbital launches in 1966}}{{US-spacecraft-stub}}2. ^{{cite web |url=http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1966-063A |title=OV1- 8 |publisher=National Space Science Data Center |accessdate=7 December 2013}} 3. ^{{cite web |url=http://planet4589.org/space/log/launchlog.txt |title=Launch Log |first=Jonathan |last=McDowell |work=Jonathan's Space Page |accessdate=7 December 2013}} 4. ^1 {{cite web |url=http://planet4589.org/space/log/satcat.txt |title=Satellite Catalog |first=Jonathan |last=McDowell |work=Jonathan's Space Page |accessdate=7 December 2013}} 5. ^{{cite web |url=http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=1632 |accessdate=July 16, 2017 |title=Grid-Sphere Passive Communications Satellite |work=National Museum of the US Air Force |publisher=USAF |deadurl=yes |archiveurl=https://web.archive.org/web/20131214113534/http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=1632 |archivedate=December 14, 2013 |df=mdy-all }} 6. ^{{cite web |url=http://www.astronautix.com/craft/ov1.htm|accessdate=December 5, 2013 |title=OV1 |work=Encyclopedia Astronautica}} 4 : Passive satellites|Spacecraft launched in 1966|Spacecraft which reentered in 1978|Balloon satellites |
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