View source for Astronomy:Explorer 14

{{Infobox spaceflight
| name                  = Explorer 14
| image                 = Explorer 14 mock-up.jpg
| image_caption         =

| mission_type          = [[Earth:Earth science|Earth science]]
| operator              = [[Organization:NASA|NASA]]
| Harvard_designation   = 1962 Beta Gamma 1
| SATCAT                = 432
| mission_duration      = 10&nbsp;months

| spacecraft_bus        =
| manufacturer          = [[Organization:Goddard Space Flight Center|Goddard Space Flight Center]]
| dry_mass              =
| launch_mass           = {{convert|40|kg|lb}}
| power                 =

| launch_date           = {{start-date|October 2, 1962, 22:11:30|timezone=yes}}&nbsp;UTC
| launch_rocket         = [[Engineering:Delta A|Delta A]] 
| launch_site           = {{wipe|Cape Canaveral Air Force Station}} LC-17B

| last_contact          = {{end-date|August 11, 1963}}
| decay_date            = May 25, 1988

| orbit_epoch           = 16 April 1965, 20:39:58&nbsp;UTC
| orbit_reference       = [[Astronomy:Geocentric orbit|Geocentric]]
| orbit_regime          = [[Astronomy:Highly elliptical orbit|Highly elliptical]]
| orbit_periapsis       = {{convert|2601.0|km|mi|sp=us}}
| orbit_apoapsis        = {{convert|96189.0|km|mi|sp=us}}
| orbit_inclination     = 42.80&nbsp;degrees
| orbit_semimajor       = {{convert|78707|km}}
| orbit_eccentricity    = 0.8389330
| orbit_period          = 2184.60&nbsp;minutes
| orbit_RAAN            = 212.21&nbsp;degrees
| orbit_arg_periapsis   = 141.02&nbsp;degrees
| orbit_mean_anomaly    = 333.98&nbsp;degrees
| orbit_mean_motion     = 0.6673
| orbit_rev_number      = 122
| apsis                 = gee

| programme             = ''Explorers''
| previous_mission      = [[Astronomy:Explorer 13|Explorer 13]]
| next_mission          = [[Astronomy:Explorer 15|Explorer 15]]
}}
'''Explorer 14''' was a spin-stabilized, solar-cell-powered spacecraft instrumented to measure cosmic-ray particles, trapped particles, solar wind protons, and [[Astronomy:Magnetosphere|magnetospheric]] and interplanetary magnetic fields. A 16-channel PFM/PM time-division multiplexed telemeter was used. The time required to sample the 16 channels (one frame period) was 0.323&nbsp;s. Half of the channels were used to convey eight-level digital information, and the others were used for analog information. During ground processing of the telemetered data, the analog information was digitized with an accuracy of 1/100 of full scale. One analog channel was [[Commutation (telemetry)|subcommutated]] in a 16-frame-long pattern and was used to telemeter spacecraft temperatures, power system voltages, currents, etc. A digital solar aspect sensor measured the spin period and phase, digitized to 0.041&nbsp;s, and the angle between the spin axis and sun direction to about 3-degree intervals.<ref>[https://history.nasa.gov/SP-4312/ch1.htm NASA:SP-4312 Dreams, Hopes, Realities-Chapter 1:Goddard's First Forty: The Quest to Learn]</ref><ref>[https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1962-051A NSSDC:Explorer 14]</ref>

==Experiments==
There were eight experiments done on the Explorer 14 during its mission.<ref>http://nssdc.gsfc.nasa.gov/nmc/experimentSearch.do?spacecraft=Explorer%2014</ref>
# Proton Analyzer
# Fluxgate Magnetometers
# Trapped Particle Radiation
# Cosmic Rays
# Proton-Electron Scintillation Detector
# Solar Aspect Sensor
# Electrolytic Timer Experiment
# Solar Cell Damage Experiment

==References==
{{Include-NASA}}
{{reflist}}

==External links==
* [http://nssdc.gsfc.nasa.gov/nmc/datasetSearch.do?spacecraft=Explorer%2014 NSSDC Explorer-14 data collections]

{{Explorer program}}


[[Category:Explorers program (NASA)]]



{{Sourceattribution|Explorer 14|1}}