| 词条 | PSLV-D1 |
| 释义 |
| name = PSLV-D1 | image = PSLV.svg | image_caption = Model of the PSLV rocket | image_alt = | image_size = 70px | mission_type = Deployment of one satellite. | operator = ISRO | Harvard_designation = | COSPAR_ID = | SATCAT = | website = ISRO website | mission_duration = 12 minutes | distance_travelled = | orbits_completed = | suborbital_range = | suborbital_apogee = | spacecraft = Polar Satellite Launch Vehicle | spacecraft_type = Launch vehicle | spacecraft_bus = | manufacturer = ISRO | launch_mass = {{convert|295000|kg|lbs}} | BOL_mass = | landing_mass = | dry_mass = | payload_mass = {{convert|846|kg|lbs}}[1] | dimensions = | power = |space_station = |start_date = |end_date = |arrival_craft = |departure_craft = | crew_size = Nil | crew_members = | crew_launching = | crew_landing = | crew_callsign = | crew_expedition = | crew_EVAs = | crew_EVA_duration = | crew_photo = | crew_photo_alt = | crew_photo_caption = | crew_photo_size = | launch_date = {{start date|1993|09|20|05|12|00|7=Z}} (IST) | launch_rocket = PSLV | launch_site = Satish Dhawan Space Centre | launch_contractor = ISRO | deployment_from = | deployment_date = | entered_service = | disposal_type = Failed | deactivated = 20 September 1993 | destroyed = | last_contact = | recovery_by = | recovery_date = | decay_date = | landing_date = | landing_site = | orbit_reference = | orbit_regime = | orbit_longitude = | orbit_slot = | orbit_semimajor = | orbit_eccentricity = | orbit_periapsis = | orbit_apoapsis = | orbit_inclination = | orbit_period = | orbit_RAAN = | orbit_arg_periapsis = | orbit_mean_anomaly = | orbit_mean_motion = | orbit_repeat = | orbit_velocity = | orbit_epoch = | orbit_rev_number = | apsis = |interplanetary = | payload_items = IRS-1E (could not be placed in orbit). | cargo_mass = | cargo_mass_press = | cargo_mass_unpress = | cargo_mass_fuel = | cargo_mass_gas = | cargo_mass_water = | instrument_type = | telescope_name = | telescope_type = | telescope_diameter = | telescope_focal_length= | telescope_area = | telescope_wavelength = | telescope_resolution = | instruments = | trans_band = | trans_frequency = | trans_bandwidth = | trans_capacity = | trans_coverage = | trans_TWTA = | trans_EIRP = | trans_HPBW = | programme = Polar Satellite Launch Vehicle missions | previous_mission = | next_mission = PSLV-D2 | insignia = | insignia_caption = | insignia_alt = | insignia_size = }}PSLV-D1 was the first mission of the PSLV program.[1] The rocket carried IRS-1E satellite but could not deploy it as the mission failed due to a software error in on board guidance and control processor. PSLV-D1 was launched at 5:12 a.m. IST on 20 September 1993. This mission was the only full failed mission under the PSLV program till the launch of PSLV-C39.[2][3][4][5] Launch & failurePSLV-D1 was launched at 5:12 a.m. IST on 20 September 1993 from Satish Dhawan Space Centre (then called "Sriharikota Launching Range"). A large disturbance occurred at the point of second stage separation and one of the retro rockets of the second stage failed due to software error in on board guidance and control processor. About 12 minutes after launch, the vehicle fell back to earth and crashed in the Bay of Bengal. The satellite IRS-1E could not be placed in orbit and the mission was a total failure.[2][5] See also
References1. ^1 {{cite web|title=PSLV D1 Brochure|url=http://www.vssc.gov.in/VSSC_V4/images/Launchers_Brochures/PSLVD1.pdf|website=VSSC|accessdate=24 December 2016}} {{PSLV}}2. ^1 {{cite news|title=PSLV-D1|publisher=Indian Space Research Organisation website|accessdate=23 Jun 2016|url=http://www.isro.gov.in/launcher/pslv-d1}} 3. ^{{cite news|title=ISRO Timeline|publisher=Indian Space Research Organisation website|accessdate=23 Jun 2016|url=http://www.isro.gov.in/about-isro/isros-timeline-1960s-to-today#33}} 4. ^{{cite news|title=PSLV|publisher=spacelaunchreport.com|accessdate=23 Jun 2016|url=http://www.spacelaunchreport.com/pslv.html}} 5. ^1 {{cite news|title=PSLV Launch Vehicle|publisher=spaceflight101.com|accessdate=23 Jun 2016|url=http://spaceflight101.com/spacerockets/pslv/}} 3 : Spacecraft launched in 1993|Polar Satellite Launch Vehicle|Satellite launch failures |
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