● (No.839) ペルー衛星 Chasqui-1 放出 (2014年8月12日) ------------------------------------------------ (C)UNI edu, Peru ペルー衛星 Chasqui-1 は 2014年2月5日、Progress M-22M により ISS に運ばれ ました。バッテリー充電が 2014年8月14日,15日の二日間で完了し、8月18日午後 ISS 宇宙遊泳 EVA-38 において、Chasqui-1 は宇宙飛行士により放出される予定 です。詳細については、下記Webを参照して下さい。 Peruvian satellite Chasqui-1 deployment Peruvian satellite Chasqui-1 was carried to ISS on February 5th, 2014 by Progress M-22M. The battery power is completed in two days of August 14th and 15th, 2014. Chasqui-1 will be released by the astronaut in the spacewalk EVA-38 of ISS in the afternoon August 18th, 2014. Please refer to the following web for more information. 437.025MHz, 1200bps AFSK, 9600bps GMSK, 10cm^3 FWD: Russian EVA-38 also features the deployment of a small satellite named Chasqui 1 that was delivered to ISS in February by Progress M-22M. The small 1-Unit CubeSat was developed at Universidad Nacional de Ingenieria del Peru. The small satellite uses an aluminum framework structure to provide stability to the satellite and offer mounting surfaces for internal and external equipment. The structural system of the satellite weighs 180 grams. Chasqui 1 uses body-mounted solar cells for power generation with each triple-junction cell measuring 8 by 4 centimeters allowing a total of 12 cells to be mounted on the external panels of the satellite. The solar cells feed a Power Control Unit that employs Maximum Power Point Tracking to generate the maximum power from the arrays based on current temperature and illumination conditions. The Power Control Unit also distributes power to the various satellite systems and controls the state of charge of three Lithium-Ion batteries. On average, the satellite generates 1 Watt of electrical power distributed via a 3.3 and a 5-Volt power bus. All satellite functions are controlled by an Onboard Computer module that measures 9.5 by 8.4 centimeters and operates at a frequency of 4MHz. Attitude Determination is accomplished by 12 sun sensors - one on each external panel, one magnetometer unit and three angular velocity sensors. A GPS receiver allows orbit determination with high precision. Attitude actuation is ensured by a permanent magnet as a backup system to six magnetic torquers. The satellite has a pointing accuracy of three degrees in imaging mode and 20 degrees for communications sessions with ground stations. Chasqui 1 uses the VHF and UHF bands for imagery downlink and command uplink achieving data rates of up to 9600bps. The satellite carries two cameras - one operating in the visible wavelength while the other acquires near-infrared imagery. The CMOS detectors of the cameras provide images of 640 by 480 pixels. The two cameras will be used to acquire images of Peru for agricultural monitoring and resource management and the observation of deforestation and natural disasters. During EVA-38, Chasqui 1 will be released into a retrograde direction by the Cosmonauts to avoid re-contact with ISS on subsequent orbits and allow the satellite to start out in an orbit slightly less than ISS that will last for up to 10-12 months. http://www.chasqui.uni.edu.pe/eng.html http://www.asahi-net.or.jp/~ei7m-wkt/numbr788.htm#chasqui http://amsat-uk.org/2014/08/15/chasqui-1-deployment-from-iss/ http://www.spaceflight101.com/iss-expedition-40-preview.html http://www.spaceflight101.com/iss-expedition-40-russian-eva-39-updates.html ----------------------------------------------------------------------- Chasqui-1 nothing heard 19:25-19:35JST, 22 Aug 2014, Ele 35 WN-N-ES, 437.025MHz 1k2AFSK,9k6GMSK YouTube Video 1 YouTube Video 2 Photos upon release 1 Photos upon release 2
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