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<p class="MsoBodyText"><span lang="EN-GB">This document specifies methods for recording the time history of instantaneous sound pressure in several positions around rotor powered unmanned aircraft systems (UAS) with a maximum take-off mass (MTOM) of less than 150 kg in accordance with ISO 21895<sup>[</sup><a href="#Reference_ref_15"><sup>9</sup></a><sup>]</sup>. The UAS can be either electrically powered or fuel-powered. It is not applicable to the tilt-rotor or tilt-wing UAS. It does not account for the UAS noise certification or regulation</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document can also be applied to measure the sound pressure from a UAS with either multiple rotors or a single rotor.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document specifies:</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo2;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">a)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">recommendations and requirements for three different test facilities for the noise measurements of various categories of multirotor-powered UAS:</span></p>
<p class="MsoListContinue2" style="mso-list: l1 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations of UAS noise tests in anechoic chambers (Clause 7);</span></p>
<p class="MsoListContinue2" style="mso-list: l1 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations of UAS noise tests in anechoic wind tunnels (Clause 8);</span></p>
<p class="MsoListContinue2" style="mso-list: l1 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations of UAS noise tests in outdoor environments (Clause 9);</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo2;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">b)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations for the configuration of noise measurement for multirotor-powered UAS in hover, vertical take-off and landing, and horizontal cruise;</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo2;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">c)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">recommendations for the test configuration and procedures to minimize the influence of meteorological effects.</span></p>
Reģistrācijas numurs (WIID)
81111
Darbības sfēra
<p class="MsoBodyText"><span lang="EN-GB">This document specifies methods for recording the time history of instantaneous sound pressure in several positions around rotor powered unmanned aircraft systems (UAS) with a maximum take-off mass (MTOM) of less than 150 kg in accordance with ISO 21895<sup>[</sup><a href="#Reference_ref_15"><sup>9</sup></a><sup>]</sup>. The UAS can be either electrically powered or fuel-powered. It is not applicable to the tilt-rotor or tilt-wing UAS. It does not account for the UAS noise certification or regulation</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document can also be applied to measure the sound pressure from a UAS with either multiple rotors or a single rotor.</span></p>
<p class="MsoBodyText"><span lang="EN-GB">This document specifies:</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo2;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">a)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">recommendations and requirements for three different test facilities for the noise measurements of various categories of multirotor-powered UAS:</span></p>
<p class="MsoListContinue2" style="mso-list: l1 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations of UAS noise tests in anechoic chambers (Clause 7);</span></p>
<p class="MsoListContinue2" style="mso-list: l1 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations of UAS noise tests in anechoic wind tunnels (Clause 8);</span></p>
<p class="MsoListContinue2" style="mso-list: l1 level1 lfo1;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">—<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations of UAS noise tests in outdoor environments (Clause 9);</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo2;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">b)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">requirements and recommendations for the configuration of noise measurement for multirotor-powered UAS in hover, vertical take-off and landing, and horizontal cruise;</span></p>
<p class="ListNumber1" style="mso-list: l0 level1 lfo2;"><!-- [if !supportLists]--><span lang="EN-GB" style="mso-fareast-font-family: Cambria; mso-bidi-font-family: Cambria;"><span style="mso-list: Ignore;">c)<span style="font: 7.0pt 'Times New Roman';"> </span></span></span><!--[endif]--><span lang="EN-GB">recommendations for the test configuration and procedures to minimize the influence of meteorological effects.</span></p>
