Ariane Passenger Payload Experiment

From Bharatpedia, an open encyclopedia
Information red.svg
Scan the QR code to donate via UPI
Dear reader, We need your support to keep the flame of knowledge burning bright! Our hosting server bill is due on June 1st, and without your help, Bharatpedia faces the risk of shutdown. We've come a long way together in exploring and celebrating our rich heritage. Now, let's unite to ensure Bharatpedia continues to be a beacon of knowledge for generations to come. Every contribution, big or small, makes a difference. Together, let's preserve and share the essence of Bharat.

Thank you for being part of the Bharatpedia family!
Please scan the QR code on the right to donate.

0%

   

transparency: ₹0 raised out of ₹100,000 (0 supporter)


Ariane Passenger Payload Experiment
Mission typeCommunications
OperatorEADS Astrium
COSPAR ID{{#property:P247}}
Mission duration2 years, 3 months
Spacecraft properties
ManufacturerIndia ISRO
Launch mass350 kilograms (770 lb)
Start of mission
Launch date19 June 1981 (1981-06-19)
RocketAriane 1
Launch siteKourou ELA-1
End of mission
Deactivated19 September 1983 (1983-09-20)
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Longitude102° East
 

The Ariane Passenger PayLoad Experiment (APPLE), was an experimental communication satellite with a C-Band transponder launched by the Indian Space Research Organisation on June 19, 1981, by Ariane, a launch vehicle of the European Space Agency (ESA) from Centre Spatial Guyanais near Kourou in French Guiana.

APPLE was India's first three-axis stabilised experimental Geostationary communication satellite. On July 16, 1981, the satellite was positioned at 102° E longitude. The 672 kg[1] satellite served as testbed of the Indian telecommunications space relay infrastructure despite the failure of one solar panel to deploy. Solid-propellant based Apogee Boost Motor to circularize APPLE's orbit was derived from SLV-3 fourth stage.[2]

It was used in several communication experiments including relay of TV programmes and radio networking. It was a cylindrical spacecraft measuring 1.2 m in diameter and 1.2 m high. Its payload consisted of two 6/4 GHz transponders connected to a 0.9 m diameter parabolic antenna. It went out of service on September 19, 1983. R. M. Vasagam was the project director of APPLE during 1977-1983[3][4]

APPLE (Specifications)
Mission Experimental geostationary communication[5]
Weight 670 kg[5]
Onboard Power 210 watts[5]
Payload C-band transponders (Two)[5]
Launch Date June 19, 1981[5]
Launch Vehicle Ariane -1(V-3)[5]
Orbit Geosynchronous[5]
Mission life Two years[5]

See also[edit]

References[edit]

  1. ↑ "ISRO success stories". THE HINDU. 28 April 2001. Archived from the original on 17 October 2006. Retrieved 2013-03-17....This important opportunity was utilised to build indigenously a 672-kg state-of-the-art three-axis-stabilised (as against the spin-stabilised Aryabhata) geosynchronous communication satellite called APPLE – Ariane Passenger Payload Experiment – which was launched in June 1981.
  2. ↑ Raj, N. Gopal (2014-09-10). "Trusty engine on Mars Orbiter to be tested yet again". The Hindu. ISSN 0971-751X. Retrieved 2021-04-24.
  3. ↑ "Biodata RM Vasagam" (PDF). BIT Mesra. Retrieved 4 August 2020.
  4. ↑ From fishing hamlet to red planet (PDF). Harper Collins. 2015. ISBN 9789351776895. Archived from the original (PDF) on 24 April 2021.
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 "Welcome To ISRO :: Satellites :: Geo-Stationary Satellite :: APPLE". Isro.org. 1981-06-19. Retrieved 2013-03-17.

Template:Orbital launches in 1981


Template:India-spacecraft-stub

Retrieved from "https://en.bharatpedia.org/index.php?title=Ariane_Passenger_Payload_Experiment&oldid=406437"