{"id":381903,"date":"2024-10-20T03:13:39","date_gmt":"2024-10-20T03:13:39","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-cen-clc-tr-17603-31-122021\/"},"modified":"2024-10-26T05:51:47","modified_gmt":"2024-10-26T05:51:47","slug":"bsi-pd-cen-clc-tr-17603-31-122021","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-cen-clc-tr-17603-31-122021\/","title":{"rendered":"BSI PD CEN\/CLC\/TR 17603-31-12:2021"},"content":{"rendered":"

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.<\/p>\n

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.<\/p>\n

The Thermal design handbook is published in 16 Parts<\/p>\n

TR 17603-31-01 Thermal design handbook \u2013 Part 1: View factors<\/p>\n

TR 17603-31-02 Thermal design handbook \u2013 Part 2: Holes, Grooves and Cavities<\/p>\n

TR 17603-31-03 Thermal design handbook \u2013 Part 3: Spacecraft Surface Temperature<\/p>\n

TR 17603-31-04 Thermal design handbook \u2013 Part 4: Conductive Heat Transfer<\/p>\n

TR 17603-31-05 Thermal design handbook \u2013 Part 5: Structural Materials: Metallic and Composite<\/p>\n

TR 17603-31-06 Thermal design handbook \u2013 Part 6: Thermal Control Surfaces<\/p>\n

TR 17603-31-07 Thermal design handbook \u2013 Part 7: Insulations<\/p>\n

TR 17603-31-08 Thermal design handbook \u2013 Part 8: Heat Pipes<\/p>\n

TR 17603-31-09 Thermal design handbook \u2013 Part 9: Radiators<\/p>\n

TR 17603-31-10 Thermal design handbook \u2013 Part 10: Phase \u2013 Change Capacitors<\/p>\n

TR 17603-31-11 Thermal design handbook \u2013 Part 11: Electrical Heating<\/p>\n

TR 17603-31-12 Thermal design handbook \u2013 Part 12: Louvers<\/p>\n

TR 17603-31-13 Thermal design handbook \u2013 Part 13: Fluid Loops<\/p>\n

TR 17603-31-14 Thermal design handbook \u2013 Part 14: Cryogenic Cooling<\/p>\n

TR 17603-31-15 Thermal design handbook \u2013 Part 15: Existing Satellites<\/p>\n

TR 17603-31-16 Thermal design handbook \u2013 Part 16: Thermal Protection System<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
10<\/td>\n1 Scope <\/td>\n<\/tr>\n
11<\/td>\n2 References <\/td>\n<\/tr>\n
12<\/td>\n3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols <\/td>\n<\/tr>\n
17<\/td>\n4 General introduction <\/td>\n<\/tr>\n
18<\/td>\n5 Components of a louver
5.1 Blades <\/td>\n<\/tr>\n
20<\/td>\n5.2 Actuators
5.2.1 Bimetals
5.2.1.1 Introduction
5.2.1.2 Materials <\/td>\n<\/tr>\n
24<\/td>\n5.2.1.3 Deflection of spirals and helical coils. sensitivity <\/td>\n<\/tr>\n
25<\/td>\n5.2.1.4 Torsional moment of spirals and helical coils <\/td>\n<\/tr>\n
26<\/td>\n5.2.2 Bellows
5.2.2.1 Introduction <\/td>\n<\/tr>\n
27<\/td>\n5.2.2.2 Materials <\/td>\n<\/tr>\n
30<\/td>\n5.2.2.3 Convolutions and characteristics <\/td>\n<\/tr>\n
32<\/td>\n5.2.2.4 Spring rate
5.2.2.5 Effective area
5.2.2.6 Volume <\/td>\n<\/tr>\n
33<\/td>\n5.2.2.7 Response
5.2.2.8 Vibrations
5.2.2.9 Summary table concerning existing bellows <\/td>\n<\/tr>\n
37<\/td>\n5.2.3 Bourdons
5.2.3.1 Introduction
5.2.3.2 Materials and characteristics
5.2.3.3 Flexibility <\/td>\n<\/tr>\n
39<\/td>\n5.3 Sensors
5.3.1 Sensor location <\/td>\n<\/tr>\n
40<\/td>\n5.3.2 Coupling options
5.4 Structural elements
5.4.1 Actuator housing
5.4.2 Frames <\/td>\n<\/tr>\n
42<\/td>\n6 Ideal louvers
6.1 Sun-light operation
6.1.1 Introduction
6.1.2 Heat rejection capability <\/td>\n<\/tr>\n
45<\/td>\n6.1.3 Effective absorptance <\/td>\n<\/tr>\n
48<\/td>\n6.1.4 Effective emittance <\/td>\n<\/tr>\n
54<\/td>\n6.2 Shadow operation
6.2.1 Introduction <\/td>\n<\/tr>\n
55<\/td>\n6.2.2 Radiosity and temperature field of the blades <\/td>\n<\/tr>\n
57<\/td>\n6.2.3 Heat transfer through the louver <\/td>\n<\/tr>\n
68<\/td>\n7 Existing systems
7.1 Summary table <\/td>\n<\/tr>\n
78<\/td>\n7.2 Ats louvers
7.2.1 Introduction
7.2.2 Analytical calculations <\/td>\n<\/tr>\n
82<\/td>\n7.2.3 Tests <\/td>\n<\/tr>\n
85<\/td>\n7.3 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 <\/td>\n<\/tr>\n
86<\/td>\n7.3.3 Louver of the control subsystem
7.3.3.1 Actuator and sensing element <\/td>\n<\/tr>\n
87<\/td>\n7.3.3.2 Analytical thermal performance <\/td>\n<\/tr>\n
88<\/td>\n7.3.4 Flight performance <\/td>\n<\/tr>\n
89<\/td>\n7.4 Snias louvers
7.4.1 Introduction <\/td>\n<\/tr>\n
90<\/td>\n7.4.2 Analytical calculations <\/td>\n<\/tr>\n
97<\/td>\n7.4.3 Tests <\/td>\n<\/tr>\n
100<\/td>\n7.4.4 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 <\/td>\n<\/tr>\n
101<\/td>\n7.4.4.3 Set point and temperature ranges <\/td>\n<\/tr>\n
103<\/td>\n7.4.4.4 Response time of the sensing element <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Space Engineering. Thermal design handbook – Louvers<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2021<\/td>\n110<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":381912,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-381903","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/381903","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/381912"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=381903"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=381903"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=381903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}