Ergänzung: MIR - Stand der Dinge lt. ESA

Geschrieben von KLL am 20. März 2001 18:35:40:

Als Antwort auf: BdW: Treibstoffmangel erhöht Risiko beim Absturz der geschrieben von Fred Feuerstein am 19. März 2001 22:13:25:

ESA INTERNAL NEWS
STA-C(2001)12

Update on MIR

Current Mir Status

Since the last report given in Internal News Round-up (STA-C(2001)10), a
further revision to the final MIR de-orbit strategy has been proposed by
Moscow Mission Control (TsUP), leading to an assumed re-entry on Thursday 22
March. However, this scenario may still be revised.

The strategy currently proposed is the following:

· The station?s altitude will be allowed to decay naturally to 220 km,
which is currently predicted to be reached on Wednesday 21 March. When
this altitude is reached, the final active de-orbit and re-entry
procedures will be initiated by re-establishing active altitude control
of the station and manoeuvring it into its final de-orbit attitude and
orientation.

· The final series of 3 de-orbit burns will be executed on Thursday 22
March.

· The first 2 burns will use only the Progress main engine while the final
burn will use the Progress main engine and attitude control thrusters.
Primary control of the station?s attitude during de-orbit and re-entry
will be by its own attitude control thrusters.
The combined effect of the 3 burns is expected to drive the orbit
perigee altitude down to approximately 82km above the nominal impact
point.

Re-entry into the Earth?s atmosphere is expected at ~ 07:05 CET, with
splashdown predicted at ~ 09:21 CET in the area of the previously announced
target impact point 2000km south-east of Australia.

The special Commission headed by Yuri Koptev, Director General of
Rosaviakosmos, the Russian Aviation and Space Agency which has overall
responsibility for all re-entry operations, is expected to meet again on
Tuesday 20 March to confirm the final de-orbit scenario, which could still be
revised at that late stage.

(This message was sent on Monday 19 March 2001 at 18:45)

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