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Manfred Memorial Moon Mission
Manfred Memorial Moon Mission (4M) was the first commercial mission to the Moon. It was led by LuxSpace, a child company of German OHB System, in honor of OHB Systems founder, professor Manfred Fuchs, who died in 2014, and was carried on the Chinese Chang'e 5-T1 test spacecraft. The Moon flyby took place on 28 October 2014, after which the spacecraft entered the elliptical earth orbit and continued transmission until 11 November 2014, exceeding its designed lifetime by four times.
==Spacecraft==
The briefcase-sized spacecraft weighing 14 kg was built by the Luxemburg company LuxSpace.〔 Its primary power source consisted of 28 non-rechargeable Saft LSH20 HTS lithium cells, which provided 4.5W power for the payload electronic to perform the primary objectives of the mission.〔 The secondary power source included 4 Saft MPS lithium-ion batteries recharged by a 2x8 grid of solar panels, allowing the mission to extend its operational lifetime. Unlike the primary power source, however, it was dependent on the spacecraft altitude and rotation, determining the availability of sunlight to recharge the batteries. The onboard computer was an FM430.
The payload was divided between two experiments: a ham radio and a radiation experiment. The radio payload consisted of a quarter-wave monopole antenna supported by an I/Q modulator, and an RF power amplifier providing 1.5W power.〔〔 The radiation experiment consisted of a radiation dosimeter provided by the Spanish company iC-Málaga.〔
As 4M remained attached to the Long March 3C/G2 upper stage through the mission, its design was adapted for heavy electromagnetic interference from the nearby 1 kW S band transmitter.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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