Ox. DEFENSE DOCUMENTATION CENTER ^ DEFENSE SUPPLY AGENCY

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1 UNCLASSIFIED AD WHOLE-BODY VIBRATION OF STANDING SUBJECTS Rbert E. Chney The Being Cmpny Wichit Brnch Agst 1965 Prcessed fr... Ox. DEFENSE DOCUMENTATION CENTER ^ DEFENSE SUPPLY AGENCY ra CO If) lo CM (BCUE^rDKl@[Hl iy)@s FOR FEDERAL SCIENTIFIC AND TECHNICAL INFORMATION ^VO I U S. DEPARTMENT OF COMMERCE / NATIONAL BUREAU OF STANDARDS / INSTITUTE FOR APPLIED TECHNOLOGY UNCLASSIFIED

2 , NOTICE TO DEFENSE DOCUMENTATION CENTER USERS This dcment is being distribted by the Cleringhse fr Federl Scientific nd Technicl Infrmtin, Deprtment f Cmmerce, s reslt f recent greement beteen the Deprtment f Defense (DOD) nd the Deprtment f Cmmerce (DOC). The Cleringhse is distribting nclssified, nlimited dcments hich re r hve been nnnced in the Technicl Abstrct Blletin (TAB) f the Defense Dcmenttin Center. The price des nt pply fr registered sers f the DDC services.

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9 EXPERIMENTAL STATION CONFIGURATION FIGURE 2 V. s & > rt 3 tg 53 I >., HI S <-* -t-j s 2 > 1 * 0) 0) B H c 91 t 6 s ~ f '3 ^J ^W ^tf * g s c O H 3 < s O 10) s D S3 2 i n 0

10 SUBJECT RESTRAINT SYSTEM FIGURE 3 VIBRATION CONTROL HANDLES FIGURE 4

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12 -i H s CO Cp, H O -H O. OH 0 P 0 ; h (0 CU CM CU CU r: H H c 0 c,0 O 01 H co ^ <M CO ft M H 4 x: ) >s W _-) t H CU (1! «H ^IJ- Pi CO ^ 3 +J H r P 3 > t ff-s. S» H t> C -H.: -P ^ 0) + -> H -P W S,Q bfl > +2 c H U CO ft :.' CO CU i3 H TJ O U rh em 0) H H 3 O :* i 1) H V &-H O H : i O >> CU CJ J3 «! tj >: rh ^ C en.c 9 CJ 3 3. n ' CU ^3 O 1 QJ O O p c c > U H 0 CO M c x: P 1 0 CU CU CM > M 33 H SH -p d D U t> C in TJ > CO CO _ H v. i-t H R Q) W P -P O U 1> <U(nBflJO«J*-i'!> cti CJ O CO "in CU P H<U c H>MH r C 1 *-'c t3 W CO i-l CJ ;--.-:. 2 Jj 01 :- H H v.7. -p H U, 3 ft H, C - > -- > 0 T( 3 P s.-> 1 P 3 SUBJECT ILLUMINATED BY PANEL FIGURE 6

13 CO CO J -I CM CM J J rf TT -1-1 CO CO J J ^ rh rh J J CO CO ^ CM i EK»3«TI< J J ^ rh rh J J > CO 4-1 t-i ^ D Q S s H U 3 n < 9 q >> c 3 2 > JSVf rh rh JJ CO CO jr.? rh rh JJ CM In * tf J J CO CO J J ^ J J 1> * CO CO CO CO rh rh t O- «} J J CO CO TnT J J CO CO yy J -1 CO CO yy T I 1 1 CM J H 3 Tj. Tt* J J CO CO J J JS^ J J J J CO CO CM CM -J J CO CO ' yy rh rh 5 c 3lO'S e C.^ 0 <n g CO <D «> ^H UO 0«" s DO CD >» S. LH O -rs CJ & 00 O e 3 M W rr CO CO CO U 0 rh 0, B # >, c CJ i CO 0j 0 c 'C - r: * CD CO * «-» (H t *i S ft \ F3 O CJ ^ O +JP CO t +J > ^ c > 0 CJ ID O -H «8 ii < J) rl» +J Hi O >> ) in < h n h ^ T< +J ) [Q +^ J +-> J3 G O -P <L) O n,q <U "1 0) l CU rh ] tn H -H J) 41 (0 r -C -P > in VJ +J m j -d P4 ^ > 5) ^B t U H +J CU, t x: S^-Hci+^^ :') H c > 3 "S B H t H H 3 0) 9) fi CJ OJ p, O ir CJ d A <l-4 J 4- r.o P 4J d J3 c 3 x: ^ i _ i!h -, >, '5 0 CO d H 0 P QDH p TJ 0) x! m -j U H TJ H gd CO.11 p -V. t>>, v : H -H Tl x.; bfl 31 <M t50 p *: >VH H ii p d (- OJ gd d ti d s d ','.' TH v. d.:1 rt b -H H gd H r) rh C d c fl.,< 4-5 r-t ti Tl ii p r-. >»<*H ", v; :- H ' n d U H x) i : n - r.-j H!*-«p A d t. P 01 > d 3 :i d *H n H HJ 10 TH 1 ^1 O 0 LT OJ P t. TH CU 01 H t/i P 73 ft P P H W) XJ :b cj ri Pi ' 1 Tl t.'j >n ~) i ft P '^ r. 'Tl Tl 0 3 d (3 & -H 01 0) d P c ;. 0< Tj ^' C1 p H : : (3 ;i «H P CJ 01 -P H to i\ M J1 10 :< ^ 1 d tn O CJ H > n r. ;C! d d 01 P H 5 fl (11 (H x: H TJ P H V V 3 0 <-t 1 H 4' H P! OJ ' fcl H M V r4 0' ^ TJ d M -3 x> p H H N CU T H h TJ P G TJ O 3 5 P H U.:. t (0 CJ Vl >? 0' d r-t (H X ) rt (U >:-" <D -t-> 0) 9 x-.-h TJ CJ H 0 t. J. tfl d X3 -" Tt d 01 H ( " -P -T1 H < rl P ^ n +' 01 <s> :. s& H c 3 OJ H CJ d A" P cn.tl M >v< fl C -.J - CJ X! O O P Q! -,i T 0 4-> r d p c P U "H e -. :.., H O -4 H '-j CU NT 0 O d ni t CU S *> 3 s s d -rl VH '.-, V M b ^ H P 9 :' y.- d M H «P p CJ 11 H CH A i. 1!-< O gd.^ M gd H CO CJ Ql F; P 3 ; 4^ > ti jd M Tl p -H :1 M M -C 0 tf d p 0 0 -s P G CJ CO > TJ > ^ A 3 0 -, g CJ th 01 td s TJ i i 0 0 0) -r' :1 03 0' ^4 +> OJ 1 3 tl < tl t H 1 d H *! 0i <L1 ] p OJ x: > LO (j CtJ i '..- 1 V TJ rh Oi -^ -1 (- s; H rh 0 c CJ S d 01 U ^ - CO 0! P U '.., c P rt CJ 9 >. U n ') t < r. t l 0J H 0 ii f.." > p d H.,-1 (. -t! '.7 t Tl P t4 cd d OJ td % p > C H TJ Tl 0' 4-> t O «'-. c> A rh O 1 d OJ M C) CO 9 *> h 1' H 9 H P P CJ H :! th H P ] P, F: j3 d S td H 01 H i CU,.i t- d n <y c» -i - : 1 CJ 0' Q > TJ CU CM «j OJ ^ M f.~ " >* O TJ < ) c^ B 01 n 5- EH P p c 8 d d <M i! TJ B h ED O -P rh '? i 4= 0 9 ) > t 4 > n> c c m )T (C-O. +J -H CO h CJ P» S i ) "-3 d CO CU : A H i 3 P < i) W 10 > ^ t «CU X» TJ d p ^ c/j ft tn O en t c d X) O C -H -rl rl f-i E O C > +J d -H TJ tn ] L. P i c HP t -H TJ t» erf d d d d t O»*TJ TH W t d =M C d rh CU O p x: P c t t-i P rj H t 0) P i* (H d cr O O O (H OJ,7' > O 0) *H d > «H <!' ft O -H _ S.5 ff! tl X -H ' J "J '-: P (4 3 til TJ flj TJ hgj; H «- TJ Tl i ej n < TJ x: -H x CO P -H e TJ 53 - : IH n O ^ f- 4' C 4 rh < I 1 CU ft X) x^ d P bn > d P SJ -H..S Jl -H TJ -H +J 4) H -H -H tl O CU M t* P d 3 3 (H O r 3 CJ CJ HJ (J (0 Xt r-i C c x: CJ ^ X) CU O C th XI tj-s OJ <H -P C n +> W r-l C d H Tl J3 tl HI C n 4J Qj 3 (-, 4-> -H t, t TJ t 3 Tl MD P > tn OJ O TJ Lt 4) O 4-> «5 jj ft -H» e (H *-' fn 0) H i U U t fl O -H O t "' 5 K > <; > e *.' >

14 SUBJECT WITH EKG ELECTRODES AND SHOULDER ACCELEROMETER MOUNTED FOR TESTS FIGURE 7 r-h t- VD (U I c ) il; O (ij 0 31 O j H fl P LO -H PH 0J -~id P -H H QJ CO p 'H t: T3 (It t ft O -H 3 p 3 QJ 0) j 0 P 0J P< CD 1 S-i X CO 10 OJ (it > 0J M *t si TJ OJ ft g +-> p si H P cd 6 cd > -H ) fl» Hil > P rh OJ Tl H ft i ^ b M *J3 3 (D H CO > 3 c C bo +J O P P crt H i P> ) rt Tt - S! j_ 4) 4' s n bb JJ S is >!> S'H fh+j rl H c, 1) -H QJ H t n> TJ H P *H *!> ft :> 1 0) OJ -Hi T3 (0 i cj rh Tl P -H P P O OJ [0 'J> ^ OJ in "-i t CJ CO P en -c? > 3 h ;-, ji H co ffl OJ O OJ "-3 ft * OJ rh CM p Tl 0.0 CO rh 10 CO 0 3 OJ JD H -d H c fi 'Q H rh-^ < JH CO C3 d - c flj CO P CJ 1 +3 H D -H S. h * O P Si -P P :.0 > 10 * 7i OO CO t!u > g OJ 0 : ; -P CO b CO C*H H t * OJ p p - 0) 0 r-j ft e t P OJ >» rh OJ +^ 3.0 cd rj 10 XI J fh H S.O CO OJ H t c 5 > OJ p c OJ 5 CM cd p b"h - H CifOH H -H 0 3 d p U QJ P fl L^ P c t 4H h!l CJ fl -,H P QJ i-5 *» s-*. ^j tp. 0 rh bf J3 O -d H O ft <M, t >> O 3 P CD c P 3 i 3 <U s -H CO H cd H (H s s.,-) t t OJ TJ i t H c ) cd p OJ i -P QJ 0 > fl bo X! -H T) 1) ) T) -H rj ' H If) p -H " s H rh A c -H -P p t> 1» il Tl fl -H O in i r tf ID O <H rh -H >, O H OJ H ) d OJ c U C 1 P 0) O c -H > ) j»! ft j > II 1) 'H O rl O li -P * M CD QJ jz > p c. /< 'H A 3 rt ft x: P > -H ^ ix;-h ft -»-> H W -P -d *J!> -H -H< H i >jp - QJ Pi ft M OJ >il)'rl, 1 & co C > O H J+J fl ' H -H OJ P -H, P QJ -H >c, jxijp cjx;t> g<- Cl^JrlO^fflTHJ mri'd 3 XJ CM -H -rl O Qj C rh P p cd jq O ft-h CO 3 P > C OJ QJ H I Tl -H CO Cd I Si U QJ 1 ft t? H CJ P H fij 3 OJ 0).C OJ fn t C -"-3 > "-3 bo U CM cd O T3 OJ p 'H C) > -H ) rh ^ M cd TJ P (0 QJ» U Ti P X CJ QJ -H U P - O -H 10 C I P : ft H *Tl h h 1 CO p * OJ CD M P 0) i CM» ) <H fj s 1J > - J-I.--: QJ O _) T3 X O CO p pq c H O U «s; rd E-( ft p? ^JlHOJlnUtit; CO 0 CJ F; QJ M O bo ci ft M O OJ to T3 O -H Cl O OJ tl) QJ x4 CO CM +-> -H P TH Tj U P CM -H

15 '. I ft P p P c HtJ 111 h O i^ y / -n m i 8 3 s 8' i f OJ (0 CO OJ QJ -P O 0t H 0) M 0) P i *d -P 4 t3 h O > O ft JH 3 JH <J n O M f -H to vh tj CO t t P - t > d (DTjJ-pniii > U U V B XJ -H p h j W 3 O H ' II V^ U <J 3 H H U OJ &CO -H P - -P W W CO c OJ OJ V, 0) 3 < s > >H ^ f O. p CO x> 3 t titt) t t C ) O H Xi 10»H t t t > j H t <H^ Drl P x: T* -P -H ^ > e g - t H t» P t t x; xi O j-4 <H c t ft 1' U P t HH (I C-M 1 x; H H 4t XJ ' -p CO 3 CO ) t tj ^ c r 1 b 3 -H f ft ) i -H -H t J ) ) S 3 P -H t t TH t t c t CJ H P > M eg c t t x t. xi t P T3 U t I O Tt O 4) x; 6 t j _, CJ *H U?D C Xi TJ t * 0t X! r t >> d >? 5 H c 3 ) xi xj t. < * t > t -H «> p -p h v 3 O > _ -H P ) P xs xi t xi t p 03 S p *-* Tj XI t3 ffs 3 ) -H p t c t J " *d ft t J t S >J P t J c3 rh > x; t P P t x; Sx: tp s p? -p CO P O >j c t t P t t P x! ) c ci t P -H t P ) p r, t t ] -1 >, OJ t t t Oi t -H q rf. f x: xi ^ ) 3 '.-: OJ H t O P h 3 & * i» cd -H t t ft C TJ X» tn : t -H P *J x t x! -P t t _t x! x: -H jd i ft i t 3 p x: t ) >» t H H S i >* P i H x: t llarlrl 0) H -rjhx iio e P i = i t> >> ft t P c P t x> > 3 X! M «J EH P X! tj t IHTI t, 13 * d t-. ft M S S " eg - ft i t > ft t 1-. ft J H ^ 3 ih j t bi) t> x: c t t P -H H g-s i CM X! 4 O -p ; x! OJ p > p t» -p h h» t t > B x: P ^ c i -H 3 : CM x: CO p p t c Ti VH c t 0J t m. H t x: t! X! 13 i b t. t t x: l X! P -4 t x; > j t P t t -H (0 c H t -H P p t H c bo O in t t -H ^H > P TJ P ty X> C XJ i H t cr f «> M OV.O vd OJ ^ «f t 0 ft in TJ t c t 3 -H -H ^ x; +> P t3 P P

16 en S gs OS H O g, E i z2 P g K > <! Hi" O E- 8 p J > s/ni AiicnA 3.0-ti 2.5 :PRESET' TABLE LIMIT EXTREMELY z MILDLY J < n i r 2 4 i i r~ \ ' r~ SUBJECTIVE REACTION CURVES FIGURE 8 J 1T T PERCEPTIBLE "1 27

17 3.0-ti EXTREMELY MILDLY SEATED SUBJECTS STANDING SUBJECTS PERCEPTIBLE * V SUBJECTIVE REACTION CURVES - SEATED AND STANDING SUBJECTS FIGURE 10 i J s z SS.4 ".3 4 W.2 C0U. < H H<: 1ST SERIES OF TESTS ' ND SERIES OF TESTS ,80% /* MEDIAN»20% MEDIAN <t> ON J \) -4 MEDIANS, 20TH AND 80TH PERCENTILES ESTABLISHED FOR PERCEPTIBLE LEVEL OF VIBRATION FIGURE 11

18 1ST SERIES OF TESTS 2.0- O 1.5 O 1.0 < H J g - 5 \^:/.y -I I I 1 1 I I i i i i i i i i i i i i I I T 27 MEDIANS, 20TH AND 80TH PERCENTILES ESTABLISHED FOR MILDLY LEVEL OF VIBRATION FIGURE On 2.5 1ST SERIES OF TESTS IT; 2ND SERIES OF TESTS z W J 1.5 < c?5 i..5- -> i i r 2 4 -i i i i i i i i i i. i i i i i i i MEDIANS. 20TH AND 80TH PERCENTILES ESTABLISHED FOR EXTREMELY LEVEL OF VIBRATION FIGURE 13

19 3.<H 2.5- ~ 2.0 Z 9 i-5- H O O W J n 1.0 ;20%, //50% 3 1ST SERIES OF TESTS :/ 2ND SERIES OF TESTS / 50% J ' -v S NOTE: Incmplete crves reslt frm sbjects reching pre-estblished ccelertin sfety limits prir t estblishing the "Alrming" sbjective level. -i i i i i i i > i i i i i i i i I r i i i 1 i I i MEDIANS AND 20TH PERCENTILES ESTABLISHED FOR ALARMING LEVEL OF VIBRATION FIGURE i- -J < «1 7 1 < ~i I i I 1 EXTREMELY MILDLY 23 ' ' 27 ' SS ACCELERATION AT SHOULDER DURING ESTABLISHMENT OF MILDLY, EXTREMELY AND ALARMING SUBJECTIVE REACTION LEVELS (MEDIANS) FIGURE 15 I (* ON ^n \Q

20 200 SHOULDER ACCELERATION EXPRESSED AS MEAN PERCENTAGE OF TABLE ACCELERATION FIGURE 16 STANDING (DIECKMANN) SEATED (DIECKMANN) STANDING (THIS STUDY) SHOULDER ACCELERATION EXPRESSED AS A PERCENTAGE OF TABLE ACCELERATION FIGURE 17

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22 1 1 TABLE IV PHYSIOLOGICAL REPORTS MADE DURING PROGRAM' HEAD AND THROAT Hed Ot f Phse Visl Blrring Perceptin f Clr Nse Itch Er Itch Teeth Chtter Skin "Crl" r Shke Vlslv Dyspne Ercttin Skin Irrittin Shlder Shke nd/r Pin Chest Tightness nd/r Pin Side Tightness nd/r Pin Bck Tightness nd/r Pin Abdmen Shke nd/r Pin Bttck Shke Internl Orgn Shke Genitl Shke nd/r Pin Gs Pins Bldder Pressre Bel Pressre 2 S S APPENDAGES Arm Fliling Tendency t Flex Legs Skin Irrittin Slight Senstin l Dizziness Bdy Sy r Blnce Difficlty Seting Wrm Senstin Ct Senstin Senstin f Nse Nmerl* Indicte II nmber iw individl reprts p p CO P 3 3 n v x: -H j ft O 4) O H h 0) 43K P 4) P -P 'd - 0J 4) p H -d S d 41 rh 1 <d -H > 5 tn -r-l 41 -d bo O OJ Tt -d >»-P P -P CJ c ) ^ p >,Q cfl 3 H H 1 i > -d ) ft.» 0) -H 4> rh 0) d <H MSP 4) DO H «cj G tfl r! t FH 0 O -P H -P - ifl H t -H (J 0> 41 rh >> ). r4 P 01 > ) O O!> CJ ti y H cd cd ^.H t) Hi fi p ) 3 0) ih O -H -H r-1 CO p CO" d 01 p t,n <M «d (i ^ 3 «J 4) 43 d P 4) > 43 -H 3 p t» H 0) U O 4H 4) > p P -d -H P Oti 4) UJ d 43 cfl O 0) (0 JH CO 4) -P M H fl DJ Ifl 4) h 4) -d 0) ;> -p 0) H -H 4) i co H t> H O 01 O CM 4) O I rh P d 1 H in SP O P 3 d 03 4) (U 4) -P & h dd H 4) I 4) -H O 43 f ) 4) I d -d d d 3 -d - d T3 4) H hfi 41 1 d M cj -H 03 cj 41 c H* 4 G 41 > O --5 H,Q P, 4) d -H 01 <M 01 CJ ^-t d cfl co > in 4) t * ti 4) cfl O M W 4) 43 H O U 43 V P ^ 8)-H l HtJCt;(C'0 in m 111 P-H 4) S) U OJ > <H TJ 41 d <M 5 O ft? 43 P ) i -H G H G 4) -d ' 3 t > W) 43 4) P d 4), 4) U p <M CM >i d O O ) ^M 4) t <H > d M 'C O 4) 5,0 j 43 d <M t ^ 4 CM -H W 4) en cfl 13 -d d rh p 'ffi ) d -H 4) 43 *-. ) H -pi 43 FH O *d W 0) '> CM 4) O N p4'do<jhw'd>h'd4)jj4jdwfnp.43'u O <H p Cfl 4). p 0) d ' 4) p ' H hx; H t cfl U U b0 O ft in CJ T) 4) P 0) ' d P 43 1 O 43 -d, d 4) } 43 t C) 4) d H O O 4) CO 5. cp ^ *d' <U -H 4) ^ > TJ H r P 4) TJ Cfl U 4) t-. P 43 O -H H O O > -H 03 rh d P O 4> d rn 4) 41 5 P3. O d -H M ^ d i d M T) 0) 4) d 03 r *H ( 4) 4) (I4 p 01 IUT3P 4)H O-dP O -} rh H 43 CJ d, *d - C P I >> 4) ( O 41 p f d > i 4) P ( 3, c fxi 3 : 4) «H ^ ft-^ ( P 41 'O! 41 SH 1 Ti i U OJ TJ > 4) > Cfl fc P! S 43 3 O ' 31 >> ^ t r 41 <M M i 41 'U crt "J p»*- CM ^^ rl-h t< O tl : ; ft s > I r 4) 4) -H t f* J 4> d -i I C rli» -H P 0) ) 9 P 1 IOC 3 I -d -H 4) O CO OJ P 0) 4 cd > t CO <H 41 -d O 01 CJ O P Cl P W d * *H -d IJ CJ M 41 p 01 ft > 42 rh d 4) «4/ 3 4) 43 rh -H I d J3P i- 1 in i"h-huul^dg0j> H t 43 O -H P I O > 0) > 0) p lpwr-l03^i4)4)o'h r rh d O bflrh p! 0 Old 30J5-.43-HP01ft rh H p (1) 44lOddO0JPfJf)c3 H -H O 81 ' : 143-HHO S dddicp. CO -d CJ J3 MP d h t< xl fj O ' H TiHCfl.H-H43004)) «...! 43 H *d U Vl A3 ti itn-h-h U» d I 4) CO d p. T3 01 -H "J d I ' 4) JH H t d h 'd 4) '^. :? -H 43 4) 4) > r-ifli+^ptn^rj d JH ft. s OJ 4) 43 CM OJ 4) O P Q 4) 1 \ K d P 43 v ft U O4)03inEHbflPft0 p 4) 0 X-d b0 >>*H -H CJ OJ P d * 0) OJ 01 d d * p LI 01 j tn JH -d 41 CM 41 d 01 "J 43 M d 0) 1 ft Sc* 41 *2 d ft 43 4) 3 P 43

23 1, H ; x: CD «t> xj P -d -t-> - ) «c_ X> g xj p e > H XJ XI O CO +J H -H d ci t H 0) cd t cj O.5 P 4i H n ^ Sir (0 Tt * v t H O CD CD O H XJ P4 tl O* - H, O -H X) O -d 0 0 d ^ i ic O <U CD 9-» M in d "-3 O x> <H t -H 3 > t* < P t x> Q I! +j x> 10 0) H > S*3 t t V) CP 0) CU H <H -H -. P > M cd CD CD CO 01 f-i b XJ ^> > XJ +J> cp -H d -H H t -P * g E? t x; B ft TH OJ tc > rh t -H XJ H 01 ill t -H U V 0> ft xj th x: = P +3 O P CO!>, TH d H d -P " C O erf >. ft ft H. cd erf > Of t O XJ -H x> -P > i 3 ' -P cd : cd H ft 3, t t s t I P OP 1-3 <H - d * -" ft Q XS Cd > ±> xi P 3 -H 0) H O 3 «1 P UO-H H O CD cd ft p CM IO cd CD H < (D -s Cd rh CD h XJ erf XJ P r-t p O ft H -H, TJ '3»s * H -* X» ft CD ) -H XI XJ t O t 41 U C > H 0) XJ P XJ O 41 th * JM O *3 O P 3 rh 0) CD CO! 10 CD 10 O t3 C 3 H W ss * h 3 y» O 4) it) d IO X-i P -H X O cd p g xi i XJ ) ft> 18. 3^ P TI cd c HDP 4) r* r-i >> 41 _ U J>» OJ H 4> > +J ti * edoho>c>0io i x: «j : t ftx! P r-t 1 XJ rs-s > >> n K-3 " XI -d rl XJ X> -H p +J -H t ) d t> t r-t XJ O OJ XJ -H O t 4J +J -d ft t ft "5? -H cd d > RELATIONSHIP BETWEEN BODY AREAS AFFECTED BY VIBRATION FIGURE 18

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27 (x W O D< Q ffl O W X (K *0 0) > J pg z O 1 CO H 2, X J m < J > in W 1 01 c 0 e jj Si 1 & <BUQ UbUX Q U B3 <, W & CO» 01 3 $ h- ^O OJ O ft* 3 U CD CO S Onc-H i-h CS Q W S 5 DO ^H bi * > z CO B t > B in 0) Si >> 00 * t? cb. ' *~< cg^n c-h c ^O«N int COH n< N c c tf n i indr- t M >H c m N *H Tjt CT> CO HNCON c-c«9 tl t/i i/> C 0) r* 3 rr 1

28 4-1 i 2 2" < 3- ALARMING EXTREMELY. MILDLY r 20 T 22 T 24 PERCEPTIBLE 28 n> SUBJECT NO. 1, 1ST SERIES OF TESTS FIGURE 19A I H

29 4n 2 z 3- ALARMING EXTREMELY < MILDLY -P^-H" 2 4 I I FREQUENCY (CPS i PERCEPTIBLE =^^ SUBJECT NO. 1, 2ND SERIES OF TESTS FIGURE 19B ^OALARMING y 6 3 < EXTREMELY MILDLY I I I V 14 I I ' I ' PERCEPTIBLE 27 SUBJECT NO. 2. 1ST SERIES OF TESTS FIGURE 20A

30 4T 3- z H 2 2" < ALARMING EXTREMELY MILDLY I I I ' I i i r- 20 PERCEPTIBLE T I r >T SUBJECT NO. 2, 2ND SERIES OF TESTS FIGURE 20B 4-1 i 3- S 2- J O < 1- ALARMING EXTREMELY MILDLY 1 r -I i I i I T - 18 r~ 20 1 r- 23 PERCEPTIBLE 1 ' I 27 * SUBJECT NO. 3, 1ST SERIES OF TESTS FIGURE 21A

31 ALARMING P 2- MILDLY U < 1- PERCEPTIBLE II ON fv SUBJECT NO. 3, 2ND SERIES OF TESTS FIGURE 2 IB ALARMING EXTREMELY MILDLY I l I i i i I I I I i I PERCEPTIBLE -\ ' I 27 SUBJECT NO. 4, 1ST SERIES OF TESTS FIGURE 22A

32 4-i O y, P ss < 1- ALARMING EXTREMELY MILDLY I ' \ I I ' l ' i PERCEPTIBLE 23 "I "" TfP SUBJECT NO. 4, 2ND SERIES OF TESTS FIGURE 22B (NO "ALARMING" LEVELS ESTABLISHED WITHIN TABLE LIMITS) 3- Z S 2- < EXTREMELY MILDLY "T I I I I I I I "I ' I ' 1~ PERCEPTIBLE SUBJECT NO. 5, 1ST SERIES OF TESTS FIGURE 23A

33 (NO "ALARMING" LEVELS ESTABLISHED WITHIN TABLE LIMITS) s i U J < EXTREMELY MILDLY I I I I I PERCEPTIBLE l 14 i i r T 20 1 =^3^ 27 SUBJECT NO. 5, 2ND SERIES OF TESTS FIGURE 23B

34 / SINE WAV./ INPUT TO SUE JEC T.172" DA.368" DA.627" DA,94 "DA FIGURE 24 5 CPS ACCELERATION CURVE-SINE WAVE COMPARISONS INPUT TO SUBJECT.055" DA,103" DA.145"DA FIGURE CPS ACCELERATION CURVE-SINE WAVE COMPARISONS

35 ! SINE WAVE.039" DA.068" DA,096" DA,17" DA 3 'i FIGURE CPS ACCELERATION CURVE-SINE WAVE COMPARISONS.012" DA v j - \ V J >.035 "D/ I 1! \ V 1 i.104" DA \ \ ^ FIGURE CPS ACCELERATION CURVE-SINE WAVE COMPARISONS

36 \0 V S B 4-1. «4J J H -P > 8 3* > -H 3 ^ i) : ft s-ti «O <1> «3 H T tj n H tt; ^ > > pi )! t) E7 0 i -H h H'H 4J H 1) H b I X! (D -P J3 TJ Tj -P 0 (0 <H tf <H O ) -H O) -1 5 fi c n -H B +3 p X n fi 4 If O ho-0 ^ ^,<i ) -P INPUT TO SUBJECT.012" DA,024 "DA.026" DA. 082" DA FIGURE CPS ACCELERATION CURVE-SINE WAVE COMPARISONS

37 3!.1 i\ i i-8 S D I tt < M 8 9, g" 2 "8f> g S Sjs Ij t. I 1 3\ 8] "1 i fei } C Q s SO? c ;* * «.,«H > 8 S e V) t < St CO CD <. < _J CD

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