(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.
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.spaceflight101.com/iss-expedition-40-preview.html
http://www.ne.jp/asahi/hamradio/je9pel/lituania.htm#chasqui
http://www.asahi-net.or.jp/~ei7m-wkt/numbr788.htm#chasqui