,,, .,, .., . ,, - MIL–STO-81OB Downloaded from https://www.everyspec.com ... ., 15 J un e 1967 TABLX 5161 . T r a n a - i c drop teat (procedure II) (Continued) W e i g h ,.1 t c s li w n , including ..s, O v e r 1,000 p o un d s : : = . N o k A. Drnp shall be made from s quick-release h.mk. m pe.d.lum ~ter as made by the L.A.B. Corpemtio., Skmtatelcs, Ncw York, o. equal The test item shfl L-t oriented for the mm?, drop ,0 that the sidm .,, al awl. cd 45 dqre=s. No B, With the log-t d;m.nsi.m P-%11.1 to the floor. the Uan$it or .omhinatim ease, with thr test item within, shd bc mpporicd at the mrncr d one end by s block 5 inchc! in height, end .! the other corner of the mm. end by .
block 12 inch= in height. ?h OFpitc end of the cam shall then be raked to Um SPc&fi=d hci~hi al the lowest ur,supyfied mm., and allowed to fall freely. !. Nof. C. With the rmmal transit position and. the l-w,, .iirm.>ior. +. that position parallel to the fl.mr. the uam;t m combination case. tith Uw t-t item within, sh.1] be subjected to the edgewise and mr.erwise drop test as fOIIOWS: 1, Edmwue drop 1.s. 0.. edge d & base of the test item shall b suPPmlcd m! a sill 5 to 6 inch= in height. l%, op~$ite edge shall b+ raised b the specified height and allowed 10 {.11 freely. The test slmll be applied once to each C@ of the baa. O! the t=t item ( total C4fow drops). 2. Cmnenuise drw ted.
One c.xnez cd the base of Uw test item shall k mppoticd on e blcck q.proximatdy 5 inches in heizht. A block nominally 12 inchei i. heisht shall k pla=d under the other comer of the sr.nm end. The opposite end of the test item shall be raked to the sp&6ed h.fght at the lowest .ns.pporlcd corner and allowed 10 fdl freely. This 1?s1$hall be sP- P1&d .“., to each of two diagonally opposite mm,” of the base ( total of two drops). When the !xomrt;ons nf width and height d the test item are #.eh u to cause instability i. the emncrwke drm test, .-dgewue drop+ shall be substituted. 1. such instance two more c&-cwke drov O. each end lhdl be ccmducied ( total of {our drw). 3.5 P r oc e d u r e H I .
C r a s h s a f e t y t e a t . T h i s t e s t i s co n d u c t e d t o d e t e r m i n e t h e s t r u c t u r a l i t e m s of s m a ll s i z r m o un t ~ d w i t h o u t s h oc k a n d v i b r a t o n i s o l a t o r s . T w o s h oc k s s h a ll b s i n t e g r i t y of e q u i p m e n t m o un t i n g m e a n s . T h e t e s t i t e m o r d u mm y l o a d s h a ll b e a tt a c h e d a pp li e d t o t h e t e s t i t e m i n e a c h d i r e c t i o n a l o n g e a c h of t h e t h r ee m u t u a ll y p e r p e n d i - c u l a r a x e s ( t o t a l of 12 s h oc k s ) . T h e s h oc k b y i t s n o r m a l p o i n t s of a tt a c h m e n t .
T h e t e s t s h oc k s i n e a c h d i r e c t i o n a l o n g t h e t h r ee i t e m o r d u mm y l o a d s h a ll b e s u b j e c t e d t u t w o p u l s e s h a p e s h a ll b ? i n a cco r d a n c e w i t h e i t h e r f i g u r e 516 - 1 o r 516 - 2, of a m p li t u d e a o r b a n d t i m e d u r a t i o n c o r d , a s s p e c i f i e d i n e q u i p - m u t u a ll y p e r p e n d i c u l a r a x e s of t h e e q u i p - m e n t ( t o t a l of 12 s h oc k s ) . T h e s h oc k p u l s e m e n t s p e c i f i c a t i o n . T h e t e s t i t e m s h a ll b e o p e r a t i n g d u r i n g t h e t e s t i f r e q l ! i r f d b y t h e .?
s h a p e s h a ll b e i n a cco r d a n c e w i t h e i t h e r f i g - u r e 516 - 1 o r 51 G 2, of a m p li t u d e a o r b a n d t i m e d u r a t i o n c o r d , a s s p w i f i e d i n e q u i p . e q u i p m e n t s p e c i f i c a t i o n . A t t h e co n c l u s i o n of t h e t e s t , t h e t e s t i t e m s h a ll b e o p e r a t e d a n d t h e r e s u l t s co m p a r e d w i t h t h e d a t a o b t a i n e d ! m c n t s p e c i f i c a t i o n .
T h e r e s h a ll b e n o f a il u r e of t h e m o un t i n g a tt a c h m e n t a n d t h e t e s t i n a cco r d a n c e w i t h s e c t i o n 3, p a r a g r a p h i t e m o r d u mm y l o a d s h a ll r e m a i n i n p l a c e 3.2.1. T h e t e s t i t e m s h a ll t h e n b e i n s p e c t e d a s s p :c i f i e d i n s e c t i o n 3, p a r a g r a p h 3.2.4. a n d n o t c r e a t e a h a z a r d . H o w e v e r , b e n d i n g a n d d i s t o r t i o n s h a ll b e p e r m i tt e d . 3.7 P r oc e d u r e V . B e n c h h a n d li n g t e s t .
T h i s t e s t i s co n d u c t e d t o d e t e r m i n e t h e a b ili t y of c ~ u p m e n t t o w i t h s t a n d t h e s h oc k e n co un t e r - p r oc e d u r e s h a ll b e u s e d w h e r e h i g h a cc e l e r a - t i o n , s h o r t t i m e d u r a t i o n s h oc k e x c i t a t i o n m .. 3.6 P r oc e d u r e I V . H i g h i n t e n s i t y t e s t . T h i s e d d u r i n g s e r v i c i n g . T h e c h a ss i s a n d f r o n t p a n e l a ss : m b l y s h a ll b e r e m o v e d f r o m i t c n c l o s u r .
n , a s fo r s e r v i c i n g , a n d p l a c e d i n a s u i t s f r o m h a n d li n g , s t a g e i g n i t i o n , s e p a r a - t i o n , r e - e n t r y , a n d h i g h v e l oc i t y a e r o d y n a m i c s u i t a b l e p o s i t i o n fo r s e r v i c i n g o n a h o r i z o n - P : r f O ~ a n c e w e a P O n s y s t e m s . T h i s t e s t s h a ll b e u t ili : e d fo r t e s t i n g s u c h i t e m s a s s m a ll , b u ff e t i n g e x p e r i e n c e d b y m i ss i : e s a n d h i g h i n c h e s t h i c k . T h e t e s t s h s ll b e p e r fo r m e d , a s fo ll o w s , i n a m a nn e r s i m u l a t i n g s h oc k s li a b l e t o occ u r d u r i n g s e r v i c i n g :
t a l , s o li d w oo d e n b e n c b t o p a t l e a s t 1 -% b g h d e n s i t y e l e c t r o n i c e q i p m e t s a d o t h e r }. _.:..-,,- 516 - 3 M E T HOD 5113 .,