Matches in SemOpenAlex for { <https://semopenalex.org/work/W2129773065> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2129773065 abstract "Schemes for an attitude control system and for electric power supplies for an unmanned satellite of a few hundred pounds total weight are presented. The attitude of the satellite with respect to the earth's center is controlled within ±10 degrees by utilizing the shadowing effect of the earth on the isotropic cosmic radiation. A number of Geiger counters are arranged so that they sense the location of the shadow cone of the earth. Signals resulting from the counting rates of the counters control fly wheels that cause the satellite to rotate around its center of gravity. Three sources for electric power are described, each of which delivers an average of about 100 watts. The first converts the sun's radiating energy with a silicon junction photoelectric generator. A sun-seeking device keeps the generator oriented toward the sun during daytime. In the second system, the sun's radiation is directed toward a pile of thermocouples made of ZnSb and constantan. Thermocouples have been built of these materials which convert solar energy into electric energy with an efficiency of 5.6%. The third method uses a radioactive, isotope, strontium 90, and its daughter product, yttrium 90, as heating element for a pile of thermocouples. The half life of strontium 90 is 20 years. Each of these three sources has a specific power production of the order of 0.4 to 0.7 watts per pound of weight. The attitude control system and the methods of power supply described are applicable also to larger satellites." @default.
- W2129773065 created "2016-06-24" @default.
- W2129773065 creator A5014623795 @default.
- W2129773065 date "1956-06-01" @default.
- W2129773065 modified "2023-09-27" @default.
- W2129773065 title "Control and Power Supply Problems of Instrumented Satellites" @default.
- W2129773065 cites W1969035324 @default.
- W2129773065 cites W1986094355 @default.
- W2129773065 cites W2008460116 @default.
- W2129773065 cites W2049276226 @default.
- W2129773065 cites W2498612247 @default.
- W2129773065 cites W48571451 @default.
- W2129773065 cites W640177028 @default.
- W2129773065 doi "https://doi.org/10.1109/ire-i.1956.5006997" @default.
- W2129773065 hasPublicationYear "1956" @default.
- W2129773065 type Work @default.
- W2129773065 sameAs 2129773065 @default.
- W2129773065 citedByCount "0" @default.
- W2129773065 crossrefType "journal-article" @default.
- W2129773065 hasAuthorship W2129773065A5014623795 @default.
- W2129773065 hasConcept C119599485 @default.
- W2129773065 hasConcept C121332964 @default.
- W2129773065 hasConcept C127413603 @default.
- W2129773065 hasConcept C137488568 @default.
- W2129773065 hasConcept C146978453 @default.
- W2129773065 hasConcept C163258240 @default.
- W2129773065 hasConcept C165801399 @default.
- W2129773065 hasConcept C168068576 @default.
- W2129773065 hasConcept C19269812 @default.
- W2129773065 hasConcept C40293303 @default.
- W2129773065 hasConcept C423512 @default.
- W2129773065 hasConcept C62520636 @default.
- W2129773065 hasConceptScore W2129773065C119599485 @default.
- W2129773065 hasConceptScore W2129773065C121332964 @default.
- W2129773065 hasConceptScore W2129773065C127413603 @default.
- W2129773065 hasConceptScore W2129773065C137488568 @default.
- W2129773065 hasConceptScore W2129773065C146978453 @default.
- W2129773065 hasConceptScore W2129773065C163258240 @default.
- W2129773065 hasConceptScore W2129773065C165801399 @default.
- W2129773065 hasConceptScore W2129773065C168068576 @default.
- W2129773065 hasConceptScore W2129773065C19269812 @default.
- W2129773065 hasConceptScore W2129773065C40293303 @default.
- W2129773065 hasConceptScore W2129773065C423512 @default.
- W2129773065 hasConceptScore W2129773065C62520636 @default.
- W2129773065 hasLocation W21297730651 @default.
- W2129773065 hasOpenAccess W2129773065 @default.
- W2129773065 hasPrimaryLocation W21297730651 @default.
- W2129773065 hasRelatedWork W1620416607 @default.
- W2129773065 hasRelatedWork W2024691866 @default.
- W2129773065 hasRelatedWork W2046804503 @default.
- W2129773065 hasRelatedWork W2068891767 @default.
- W2129773065 hasRelatedWork W2083915387 @default.
- W2129773065 hasRelatedWork W2115648766 @default.
- W2129773065 hasRelatedWork W2123907690 @default.
- W2129773065 hasRelatedWork W2285739859 @default.
- W2129773065 hasRelatedWork W2325327807 @default.
- W2129773065 hasRelatedWork W3037466495 @default.
- W2129773065 hasRelatedWork W3037471626 @default.
- W2129773065 hasRelatedWork W3163992577 @default.
- W2129773065 hasRelatedWork W1008329775 @default.
- W2129773065 hasRelatedWork W1921720593 @default.
- W2129773065 hasRelatedWork W2084566135 @default.
- W2129773065 hasRelatedWork W2612836364 @default.
- W2129773065 hasRelatedWork W2837878426 @default.
- W2129773065 hasRelatedWork W2846811831 @default.
- W2129773065 hasRelatedWork W2857188906 @default.
- W2129773065 hasRelatedWork W2965887641 @default.
- W2129773065 isParatext "false" @default.
- W2129773065 isRetracted "false" @default.
- W2129773065 magId "2129773065" @default.
- W2129773065 workType "article" @default.