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BSI PD CEN/CLC/TR 17603-31-12:2021

BSI PD CEN/CLC/TR 17603-31-12:2021

$215.11

Space Engineering. Thermal design handbook – Louvers

Published By Publication Date Number of Pages
BSI 2021 110
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Thermal louvers are thermal control surfaces whose radiation characteristics can be varied in order to maintain the correct operating temperature of a component subject to cyclical changes in the amount of heat that it absorbs or generates.

The design and construction of louvers for space systems are described in this Part 12 and a clause is also dedicated to providing details on existing systems.

The Thermal design handbook is published in 16 Parts

TR 17603-31-01 Thermal design handbook – Part 1: View factors

TR 17603-31-02 Thermal design handbook – Part 2: Holes, Grooves and Cavities

TR 17603-31-03 Thermal design handbook – Part 3: Spacecraft Surface Temperature

TR 17603-31-04 Thermal design handbook – Part 4: Conductive Heat Transfer

TR 17603-31-05 Thermal design handbook – Part 5: Structural Materials: Metallic and Composite

TR 17603-31-06 Thermal design handbook – Part 6: Thermal Control Surfaces

TR 17603-31-07 Thermal design handbook – Part 7: Insulations

TR 17603-31-08 Thermal design handbook – Part 8: Heat Pipes

TR 17603-31-09 Thermal design handbook – Part 9: Radiators

TR 17603-31-10 Thermal design handbook – Part 10: Phase – Change Capacitors

TR 17603-31-11 Thermal design handbook – Part 11: Electrical Heating

TR 17603-31-12 Thermal design handbook – Part 12: Louvers

TR 17603-31-13 Thermal design handbook – Part 13: Fluid Loops

TR 17603-31-14 Thermal design handbook – Part 14: Cryogenic Cooling

TR 17603-31-15 Thermal design handbook – Part 15: Existing Satellites

TR 17603-31-16 Thermal design handbook – Part 16: Thermal Protection System

PDF Catalog

PDF Pages PDF Title
2 undefined
10 1 Scope
11 2 References
12 3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
17 4 General introduction
18 5 Components of a louver
5.1 Blades
20 5.2 Actuators
5.2.1 Bimetals
5.2.1.1 Introduction
5.2.1.2 Materials
24 5.2.1.3 Deflection of spirals and helical coils. sensitivity
25 5.2.1.4 Torsional moment of spirals and helical coils
26 5.2.2 Bellows
5.2.2.1 Introduction
27 5.2.2.2 Materials
30 5.2.2.3 Convolutions and characteristics
32 5.2.2.4 Spring rate
5.2.2.5 Effective area
5.2.2.6 Volume
33 5.2.2.7 Response
5.2.2.8 Vibrations
5.2.2.9 Summary table concerning existing bellows
37 5.2.3 Bourdons
5.2.3.1 Introduction
5.2.3.2 Materials and characteristics
5.2.3.3 Flexibility
39 5.3 Sensors
5.3.1 Sensor location
40 5.3.2 Coupling options
5.4 Structural elements
5.4.1 Actuator housing
5.4.2 Frames
42 6 Ideal louvers
6.1 Sun-light operation
6.1.1 Introduction
6.1.2 Heat rejection capability
45 6.1.3 Effective absorptance
48 6.1.4 Effective emittance
54 6.2 Shadow operation
6.2.1 Introduction
55 6.2.2 Radiosity and temperature field of the blades
57 6.2.3 Heat transfer through the louver
68 7 Existing systems
7.1 Summary table
78 7.2 Ats louvers
7.2.1 Introduction
7.2.2 Analytical calculations
82 7.2.3 Tests
85 7.3 Nimbus louvers
7.3.1 Introduction
7.3.2 Louvers of the sensory subsystem
7.3.2.1 Actuator and sensing element
7.3.2.2 Analytical thermal performance
86 7.3.3 Louver of the control subsystem
7.3.3.1 Actuator and sensing element
87 7.3.3.2 Analytical thermal performance
88 7.3.4 Flight performance
89 7.4 Snias louvers
7.4.1 Introduction
90 7.4.2 Analytical calculations
97 7.4.3 Tests
100 7.4.4 The Bourdon tube used as an actuator in the SNIAS Louver system
7.4.4.1 Summary
7.4.4.2 Characteristics of the Bourdon spiral
101 7.4.4.3 Set point and temperature ranges
103 7.4.4.4 Response time of the sensing element

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BSI PD CEN/CLC/TR 17603-31-12:2021
$215.11