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Code of Federal Regulations (Last Updated: November 8, 2024) |
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Title 14 - Aeronautics and Space |
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Chapter I - Federal Aviation Administration, Department of Transportation |
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SubChapter C - Aircraft |
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Part 23 - Airworthiness Standards: Normal, Utility, Acrobatic, and Commuter Category Airplanes |
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Subpart C - Structure |
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Flight Loads |
§ 23.369 - Rear lift truss.
Latest version.
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§ 23.369 Rear lift truss.
(a) If a rear lift truss is used, it must be designed to withstand conditions of reversed airflow at a design speed of -
V = 8.7 √(W/S) + 8.7 (knots), where W/S = wing loading at design maximum takeoff weight.
(b) Either aerodynamic data for the particular wing section used, or a value of CL equalling −0.8 with a chordwise distribution that is triangular between a peak at the trailing edge and zero at the leading edge, must be used.
[Doc. No. 4080, 29 FR 17955, Dec. 18, 1964, as amended by Amdt. 23-7, 34 FR 13089, Aug. 13, 1969; 34 FR 17509, Oct. 30, 1969; Amdt. 23-45, 58 FR 42160, Aug. 6, 1993; Amdt. 23-48, 61 FR 5145, Feb. 9, 1996]