§3.233 Ground gust conditions.

(a) The following ground gust conditions shall be investigated in cases where a deviation from the specific values for minimum control forces listed in Figure 3-11 is applicable. The following conditions are intended to simulate the loadings on control surfaces due to ground gusts and when taxying with the wind. (b) The limit hinge moment H shall be obtained from the following formula: H=K,Sq where: / H=limit hinge moment (foot-pounds). ¢=mean chord of the control surface aft of the hinge line (feet). S=area of control surface aft of the hinge line (square feet). q=dynamiec pressure (pounds per square foot) to be based on a design speed not less than 10/W/S-+10 miles per hour, except that the design speed need not exceed 60 miles per hour. K=factor as specified below: Surface :¢ (a) Aileron Control column locked or lashed in mid-position. (b) Aileron._.2--- 2 +0. 50 Aflerons at full throw; + moment on one alleron, ~ moment on the other. {c) (ad) Elevator.___-_ 222 +0, 76 Elevator (c) full up (—), and (d) full down (+). (e) (f) Rudder ~--__ ---_ 2. +0. 75 Rudder (e) in neutral, and (f) at full throw. (ce) As used in paragraph (b) in connection with ailerons and elevators, a positive value of K indicates a moment tending to depress the surface while a negative value of K indicates a moment tending to raise the surface. 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W M A U N A - I n b a u l p s s e i d a q [ [ B Y y s S U O T I O e a I T e U s d } - X ] P a y l o e d s s u o l } I p t o o p v o l p u n o a s a y y j o y o r d u l ‘ a i n o n m s a u e d i e u z U L I N d Y D S I Y M S a a t I ’ V I V a U T a y y p u s S P O ] [ B U I I } K S Y } S B P a . . e p I s u o D a q [ [ e y s S U O I J I P U O D B U I M O T I O F } U r p a y l o a d s S P e o l a L “ s p p o ] p u n o u y ' e $ s q v o ' T a n n o u p ‘ U O T Y S a N D U t [ O I } W U O D a y y A l d d e A T a H T T S t O T I d & Y O M U N U I T x e U U O p a s e q S P O ] } I O } p a u s I s a p a q I l e u s ‘ s j o r y u o o q e } p u e ‘ s i a i o d s ‘ s a y v i g [ M S v Y O N S s ‘ s [ o r q y u o d A l B p u o d a g = * s ] - S A S P U D $ ] U f i u D p U o d a s S F E T E S H S877 74 O— FHK—_! GROUND LINE TAN’ K (SEE NOTE LEVEL LANOING NOSE WHEEL TYPE TAN” K iSFE_NOTE TT GROVHO LING hoy f LEVEL LANDING WITH INCLINED REACTIONS rank f, SEE NOTES SEE NOTE kK i ae LIKE : ©) iy GROUND LINE af-—-- b jm" [it teentoeees| TAIL DOWN LANDING FIG. 3-°12(b) BASIC LANDING CONDITIONS (ce) Vertical ground reactions. In this condition, it shall be assumed that the ground reactions are vertical, the wheels having been brought up to speed before the maximum vertical load is attained.