Changes between Version 31 and Version 32 of UserApp/Proba-V

Timestamp:

12/12/11 13:24:22 (13 years ago)

Author:

Iliyankatsarski

Comment:

/* Technologies */

UserApp/Proba-V

@@ -160 +160 @@
 device to fly in space. GaN has been called the most promising semiconductor since silicon, capable of operating at 
 higher powers and temperature. It is also inherently radiation resistant. Another guest technology payload slot remains to be allocated.
+= Platform =
+
+
+Proba-V’s platform – otherwise known as its ‘bus’, the surrounding structure containing all necessary subsystems to 
+let the payload do its work – takes its flight heritage from the Proba series of small satellites. The platform has 
+been demonstrated in orbit by the Proba-1 and Proba-2 missions.
+ 
+The underlying design is recurrent from Proba-2. It is box-shaped, with precise dimensions 765 x 730 x 840 mm3. The platform 
+is based around a H-structure with structural panels made from aluminium and carbon fibre reinforced plastic (CFRP) material. 
+Unlike Proba-2, which has deployable panels, Proba-V will have its solar array mounted onto its satellite body.
+
+The satellite is three-axis stabilised, with an attitude and orbit control system inherited from Proba-2. incorporating a star 
+tracker, GPS receivers, magnetometer and magneto-torquers.
+
+In an significant upgrade from previous Proba missions, the star trackers - as well as the Vegetation instrument payload – have been 
+placed on an optical bench to minimise temperature-driven structural deformation. Navigation and manoeuvres take place on a largely 
+autonomous basis, with minimal input from the ground.  
+ 
+The satellite has a design lifetime of 2.5 years, and possesses total system redundancy to make it single-failure tolerant.
 = Spacecraft: =