29.5 trim
FAR 23.161 : Trim.
(a)
General.[Each airplane must meet the trim requirements of this section after being trimmed and withoutfurtherpressureupon, ormovementof,theprimary controls or their correspondingtrim controlsby thepilot or the automaticpilot.In addition, it mustbepossible,in other conditions ofloading, con.guration, speed andpower to ensure that the pilot will not be unduly fatigued or distracted by the need to apply residual control forces exceeding those for prolonged application of Sec. 23.143(c). This applies in normal operation of the airplane and, if applicable, to those conditions associated with the failure of one engine for which performance characteristics are established.]
(b)
Lateral and directional trim.The airplane must maintainlateral anddirectional trim in level .ight with the landing gear and wing .aps retracted as follows :
(1)
[For normal, utilityand acrobatic category airplanes, at a speed of0.9 VH, VC, or VMO/MMO, whichever is lowest; and
(2)
For commuter category airplanes, at all speeds from 1.4 VS1 to the lesser of VH or VMO/MMO.
(c)
Longitudinal trim. The airplane must maintain longitudinal trim under each of the following conditions :
′
Elodie Roux. Septembre 2003
Subpart B : Flight
(1)
A climb with–
(i)
Takeo.power,landinggearretracted,wing.apsinthetakeo.position(s), atthespeeds usedindetermining theclimbperformancerequiredbySec. 23.65; and
(ii)
Maximum continuous power at the speeds and in the con.guration used in determining the climb performance required by Sec. 23.69(a).
(2)
Level .ight at all speeds from the lesser of VH and either VNO or VMO/MMO (as appropriate), to 1.4VS1, with the landing gear and .aps retracted.
(3)
A descent at VNO or VMO/MMO, whichever is applicable, with power o. and with the landing gear and .aps retracted.
(4)
Approach with landing gear extended and with–
(i)
A 3 degree angle of descent, with .aps retracted and at a speed of 1.4 VS1 ;
(ii)
A3degreeangleofdescent, .apsinthelandingposition(s) at VREF ;and
(iii) An approachgradientequal tothe steepest usedinthelanding distance demonstrations of Sec. 23.75, .aps in the landing position(s) at VREF.
(d)
In addition, each multiengine airplane must maintain longitudinal and directional trim, and the lateral control force must not exceed 5 pounds at the speed used in complying withSec.23.67(a),(b)(2), or(c)(3), as appropriate, with–]
(1)
The critical engineinoperative, andif applicable,itspropellerin the minimum drag position;
(2)
The remaining engines at maximum continuous power;
(3)
The landing gear retracted;
(4)
[Wing.aps retracted; and]
(5)
An angle of bank of not more than 5'.
(e)
[In addition, eachcommuter category airplanefor which,in thedetermination of the takeo.path in accordance with Sec.23.57, the climbin the takeo. con.guration at V2 extendsbeyond400feet abovethetakeo. surface,it mustbepossibleto reduce thelongitudinal andlateral controlforcesto10pounds and5pounds, respectively, and the directional control force must not exceed 50 pounds at V2 with–
(1)
The criticalengineinoperative anditspropellerin the minimumdragposition;
(2)
The remaining engine(s) attakeo.power;
(3)
Landing gear retracted;
(4)
Wing .apsinthetakeo.position(s); and
(5)
An angle of bank not exceeding 5'.] Amdt. 23-50, E.. 03/11/96
29.6 Stability
FAR 23.171 : General.
The airplane must be longitudinally, directionally, and laterally stable under Secs.
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本文链接地址：FAA规章 美国联邦航空规章 Federal Aviation Regulations 1(134)
