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Statements

Subject Item
dbr:LOFTI-1
rdf:type
dbo:ArtificialSatellite yago:Nonaccomplishment100066216 n13:Event owl:Thing yago:Journey100306426 dbo:SocietalEvent yago:Travel100295701 yago:Abstraction100002137 yago:WikicatPartialSatelliteLaunchFailures dbo:SpaceMission wikidata:Q1656682 dbo:Event yago:Act100030358 yago:Failure100066636 yago:Voyage100312553 yago:YagoPermanentlyLocatedEntity yago:Change100191142 schema:Event yago:Action100037396 yago:PsychologicalFeature100023100 yago:Spaceflight100313502 yago:Motion100279835 yago:Event100029378 wikidata:Q2133344
rdfs:label
LOFTI 1 LOFTI-1
rdfs:comment
LOFTI-1 was an American satellite which was launched in 1961 and operated by the United States Navy and Naval Research Laboratory. It was used to conduct research into the propagation of very low frequency radio signals in the ionosphere, and to investigate if these signals could be received by submarines. A 136.17 MHz transmitter was used for this investigation. LOFTI 1 (ang. Low Frequency Trans Ionospheric Satellite) – amerykański wojskowy , który miał prowadzić badania związane z propagacją fal radiowych o bardzo niskiej częstotliwości w jonosferze. Misja zakończyła się częściowym sukcesem, ponieważ LOFTI 1 nie oddzielił się od satelity Transit 3B, do którego był przymocowany. Oba statki nie odłączyły się też od ostatniego członu rakiety. Otrzymały przez to orbitę eliptyczną, co skróciło ich żywotność do 37 dni. Statki funkcjonowały prawidłowo, jednak będąc połączone nie mogły zostać użyte do zaplanowanych celów.
foaf:name
LOFTI-1
dbp:name
LOFTI-1
foaf:depiction
n18:LOFTI_1.jpg
dcterms:subject
dbc:Spacecraft_which_reentered_in_1961 dbc:Partial_satellite_launch_failures dbc:Spacecraft_launched_in_1961
dbo:wikiPageID
28032117
dbo:wikiPageRevisionID
1064883317
dbo:wikiPageWikiLink
dbc:Spacecraft_launched_in_1961 dbr:Atmospheric_reentry dbr:Cape_Canaveral_Air_Force_Station_Space_Launch_Complex_17 dbr:Orbital_period dbc:Spacecraft_which_reentered_in_1961 dbr:Inclination dbr:Ionosphere dbr:Nickel-cadmium_battery dbr:United_States_Navy dbr:United_States_Naval_Research_Laboratory dbr:Very_low_frequency dbr:Thor-Ablestar dbc:Partial_satellite_launch_failures dbr:Apsis dbr:Geocentric_orbit dbr:Low_Earth_orbit dbr:Orbital_decay dbr:Cape_Canaveral_Air_Force_Station dbr:Transit_3B dbr:US_Navy dbr:Orbital_eccentricity
owl:sameAs
freebase:m.0cmd34x yago-res:LOFTI-1 wikidata:Q6459486 n21:4q8Dk dbpedia-pl:LOFTI_1
dbp:wikiPageUsesTemplate
dbt:Infobox_spaceflight dbt:Orbital_launches_in_1961 dbt:US-spacecraft-stub dbt:Portal dbt:Start-date dbt:Convert dbt:Reflist dbt:End-date
dbo:thumbnail
n18:LOFTI_1.jpg?width=300
dbp:apsis
gee
dbp:decayDate
1961-03-30
dbp:imageCaption
LOFTI-1 before launch
dbp:launchDate
0001-02-22
dbp:launchRocket
Thor DM-21 Ablestar 313
dbp:launchSite
dbr:Cape_Canaveral_Air_Force_Station dbr:Cape_Canaveral_Air_Force_Station_Space_Launch_Complex_17
dbp:manufacturer
NRL
dbp:missionType
Ionospheric
dbp:operator
dbr:US_Navy dbr:United_States_Naval_Research_Laboratory
dbp:orbitInclination
28.3
dbp:orbitPeriod
5784.0
dbp:orbitReference
dbr:Geocentric_orbit
dbp:orbitRegime
dbr:Low_Earth_orbit
dbo:abstract
LOFTI 1 (ang. Low Frequency Trans Ionospheric Satellite) – amerykański wojskowy , który miał prowadzić badania związane z propagacją fal radiowych o bardzo niskiej częstotliwości w jonosferze. Misja zakończyła się częściowym sukcesem, ponieważ LOFTI 1 nie oddzielił się od satelity Transit 3B, do którego był przymocowany. Oba statki nie odłączyły się też od ostatniego członu rakiety. Otrzymały przez to orbitę eliptyczną, co skróciło ich żywotność do 37 dni. Statki funkcjonowały prawidłowo, jednak będąc połączone nie mogły zostać użyte do zaplanowanych celów. Misję finansowało (NRL) z ramienia US Navy. LOFTI-1 was an American satellite which was launched in 1961 and operated by the United States Navy and Naval Research Laboratory. It was used to conduct research into the propagation of very low frequency radio signals in the ionosphere, and to investigate if these signals could be received by submarines. A 136.17 MHz transmitter was used for this investigation. The launch of LOFTI-1 was conducted at 03:45 UTC on 22 February 1961, using a Thor DM-21 Ablestar rocket flying from Launch Complex 17B at the Cape Canaveral Air Force Station. It was a secondary payload aboard the rocket, with the primary payload being the Transit 3B prototype navigation satellite. The rocket and upper stage used had the serial numbers Thor 313 and Ablestar 007 respectively. The launch resulted in a partial failure, with the spacecraft being placed in a more eccentric orbit than planned, and failing to separate from the upper stage. LOFTI-1 was a 26-kilogram (57 lb) spacecraft, which was powered by six groups of solar cells charging a nickel-cadmium battery. It ended up in a low Earth orbit with a perigee of 167 kilometres (104 mi), an apogee of 1,002 kilometres (623 mi), and 28.3 degrees of inclination. It had an orbital period of 96.4 minutes. Due to the low perigee of its orbit, LOFTI-1 decayed quickly, and reentered the atmosphere on 30 March 1961, less than 37 days after launch. Despite being in the wrong orbit and operating for less time than had been planned, some useful data was returned from the mission. Together with data returned by later satellites, the data returned by LOFTI-1 proved that very low frequency signals were not suitable for satellite communications with submarines.
dbp:harvardDesignation
1961
dbp:orbitEpoch
0001-02-21
gold:hypernym
dbr:Satellite
prov:wasDerivedFrom
wikipedia-en:LOFTI-1?oldid=1064883317&ns=0
dbo:wikiPageLength
4939
dbo:landingDate
1961-03-30
dbo:launchDate
1961-02-22
dbo:launchVehicle
dbr:Thor-Ablestar
dbo:manufacturer
dbr:United_States_Naval_Research_Laboratory
dbo:operator
dbr:US_Navy dbr:United_States_Naval_Research_Laboratory
foaf:isPrimaryTopicOf
wikipedia-en:LOFTI-1