Page 29 - test

Ref : CM-DFH4-2014-1
BEAZLEY Issue : 1

DFH 4 Series Spacecraft Date : 28 Sept 2014
Page 27 of 38

qualification and flight experience.
Is there any analysis of the side effect (Solar
array degradation, erosion, charging, plume
effect. disturbance of the RF, radiation.,
compatibility with the chemical thrusters...)
It seems that they are making use of a thrusters
with grid/mesh. This technology was subject to
life degradation in the past (Boeing experience)
. How they have solved this issue which is very
critical with respect of the 15 years life?
Nothing is said on the Xe pressure regulator (is
it a mechanical one or an electronic one) Here
again what is its life qualification?

Deployment  Solar array deployment and strategy for The complex antenna deployment is not
deployment not addressed.
Mechanisms  Antenna deployment system not addressed. described and will be very difficult to be tested
on ground. Deploying this complex antenna
(making use of certainly complex 0g device) on
the launch pad is a major risk

CHINASAT 16 Observation Comment /Assessment Cri

All the dates provided in this schedule are
erroneous or not realistic. Several events have
the status accomplished but they are scheduled
for 2015!!
We believe that it is a “copy paste” error.
Schedule not credible. See below.

2013.04.27 The contract was formally signed
2013.06.30 Kick-off meeting finished
2014.09.20 S/C PDR Accomplished
2015.06.30 S/C CDR Accomplished
 Since there is no detailed schedule, the page
Project 161 is considered as the master schedule. 2015.07.30 SM/PM/CM disassembly
Schedule  With a Kick Off June 2013 and delivery in 2015.09.30 Satellite Performance Test (SPT) started
orbit May 2017. 2015.12.30 SPT1-A1/A phase Accomplished
2016.01.30 Platform & CM Mating Accomplished
2016.03.30 SPT1-B
2016.04.30 SPT1-C1
2016.06.10 SPT2 ( S/C Vibration & Acoustic Test )
2016.09.30 SPT3 ( S/C Thermal Vacuum )
2016.11.30 S/C CATR
2016.12.20 SPT4
2016.12.30 Pre Shipment Review
2017.02.25 Launch
2017.05.25 Delivery in Orbit

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