{"id":423318,"date":"2024-10-20T06:45:51","date_gmt":"2024-10-20T06:45:51","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-23-30426803-dc-2023\/"},"modified":"2024-10-26T12:41:24","modified_gmt":"2024-10-26T12:41:24","slug":"bsi-23-30426803-dc-2023","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-23-30426803-dc-2023\/","title":{"rendered":"BSI 23\/30426803 DC 2023"},"content":{"rendered":"

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
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
7<\/td>\nForeword <\/td>\n<\/tr>\n
8<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative reference documents <\/td>\n<\/tr>\n
10<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
13<\/td>\n4 List of abbreviated terms
5 Instrumentation
5.1 General
5.2 Calibration <\/td>\n<\/tr>\n
14<\/td>\n6 General requirements
6.1 General
6.2 Requirements of acoustic far-field condition
6.3 Requirements of position of UAS to reduce aerodynamic flow effect <\/td>\n<\/tr>\n
15<\/td>\n6.4 Requirements of position control
6.4.1 Requirement of position accuracy
6.4.2 Requirement of velocity accuracy
6.5 Requirements of background noise <\/td>\n<\/tr>\n
16<\/td>\n7 Anechoic chamber tests
7.1 General
7.2 Requirements of anechoic chamber
7.2.1 Size
7.2.2 Anechoic chamber qualification <\/td>\n<\/tr>\n
17<\/td>\n7.3 Measurement configurations <\/td>\n<\/tr>\n
18<\/td>\n7.3.1 Hover and yaw: 4-microphone approach <\/td>\n<\/tr>\n
19<\/td>\n7.3.2 Hover and yaw: multiple microphone approach <\/td>\n<\/tr>\n
21<\/td>\n7.3.3 Take-off and landing <\/td>\n<\/tr>\n
22<\/td>\n7.3.4 Cruise flight <\/td>\n<\/tr>\n
23<\/td>\n8 Anechoic wind tunnel tests
8.1 General <\/td>\n<\/tr>\n
24<\/td>\n8.2 Requirements of anechoic wind tunnel
8.2.1 Wind tunnel test configurations
8.2.2 Refraction correction
8.2.3 Microphone clearance distance
8.2.4 Anechoic chamber size
8.3 Measurement configurations <\/td>\n<\/tr>\n
25<\/td>\n8.3.1 Take-off and landing <\/td>\n<\/tr>\n
26<\/td>\n8.3.2 Cruise flight <\/td>\n<\/tr>\n
28<\/td>\n9 Outdoor tests
9.1 General <\/td>\n<\/tr>\n
29<\/td>\n9.2 Recommendations of the test site
9.3 Recommendations of the meteorological conditions <\/td>\n<\/tr>\n
30<\/td>\n9.4 Microphone configuration and layout
9.4.1 Microphone configuration
9.4.2 Microphone layout <\/td>\n<\/tr>\n
31<\/td>\n9.5 Measurement corrections and limitations
9.6 Measurement procedures <\/td>\n<\/tr>\n
32<\/td>\n9.6.1 Hover and yaw
9.6.2 Take-off and landing
9.6.3 Cruise flight <\/td>\n<\/tr>\n
33<\/td>\n10 Uncertainties
10.1 General
10.2 Uncertainty sources and requirements
10.3 Evaluation of the uncertainty <\/td>\n<\/tr>\n
34<\/td>\n11 Information to report
11.1 Test methods
11.2 Selected noise metrics
11.3 UAS under test <\/td>\n<\/tr>\n
35<\/td>\n11.4 Test environment
11.5 Data acquisition system
11.6 Measurement
11.7 Results <\/td>\n<\/tr>\n
37<\/td>\nAnnex\u20acA (Informative) Examples of the procedures to compute noise metrics from the recorded sound pressure signals <\/td>\n<\/tr>\n
40<\/td>\nAnnex\u20acB (Informative) Numerical examination of the acoustic far-field condition <\/td>\n<\/tr>\n
43<\/td>\nAnnex\u20acC (Informative) Measurement of far-field condition for a UAS propeller noise <\/td>\n<\/tr>\n
45<\/td>\nAnnex\u20acD (Informative) An example of adjusting the UAS location to realize different equivalent observer angles <\/td>\n<\/tr>\n
46<\/td>\nAnnex\u20acE (Informative) The effect of using windscreen for UAS propeller noise measurements <\/td>\n<\/tr>\n
47<\/td>\nAnnex\u20acF (Informative) Examples of ground-board mounted microphone configurations <\/td>\n<\/tr>\n
49<\/td>\nAnnex\u20acG (Informative) Uncertainty analysis example of a UAS noise measurement <\/td>\n<\/tr>\n
51<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

BS ISO 5305. Noise measurements for UAS (Unmanned aircraft systems)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2023<\/td>\n51<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":423328,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-423318","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\/423318","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\/423328"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=423318"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=423318"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=423318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}