Trayectoria en Ingles
-
Upload
lilia-a-luke -
Category
Documents
-
view
228 -
download
0
Transcript of Trayectoria en Ingles
-
8/10/2019 Trayectoria en Ingles
1/50
Crime Scene Processing SeriesCrime Scene Processing Series
TRAJECTORYTRAJECTORYANALYSISANALYSIS
New Mexico State PoliceNew Mexico State Police
Criminal Investigations SectionCriminal Investigations Section
Crime Scene TeamCrime Scene Team
-
8/10/2019 Trayectoria en Ingles
2/50
Analsis!Analsis!
Any type of analysis that weAny type of analysis that wedo is based on the scienticdo is based on the scientic
method.method.
The scientic method is aThe scientic method is a
dened process used todened process used toresolve complex problems.resolve complex problems.
-
8/10/2019 Trayectoria en Ingles
3/50
Dene theproblem orquestion.
Collectinformation/data
to resolve theproblem.
Posit ahypothesis.
each aconclusion.
Test thehypothesis.
!r"ani#e theinformation.
Scienti"c Met#o$Scienti"c Met#o$
-
8/10/2019 Trayectoria en Ingles
4/50
Analsis an$ Crime SceneAnalsis an$ Crime Scene
Reconstr%ctionReconstr%ction $n wor%in" to establish &what happened'($n wor%in" to establish &what happened'(
we are attemptin" to describe a series ofwe are attemptin" to describe a series ofevents) however' many times we will notevents) however' many times we will not
be able to determine everythin" thatbe able to determine everythin" thathappened within that series.happened within that series. *e can only "ive the best explanation of*e can only "ive the best explanation of
the series of events based on the datathe series of events based on the data
that is available) and we are always openthat is available) and we are always opento revisin" our analysis when presentedto revisin" our analysis when presentedwith new data.with new data.
-
8/10/2019 Trayectoria en Ingles
5/50
Reconstr%ctionReconstr%ction
In Reconstr%ction& we are tringIn Reconstr%ction& we are tringto '%t toget#erto '%t toget#er()AT()AT#a''ene$& not ()Y it #a''ene$*#a''ene$& not ()Y it #a''ene$*
In Crime Scene Reconstr%ction&In Crime Scene Reconstr%ction&
we onl $oc%ment w#at can +ewe onl $oc%ment w#at can +e
'roven em'iricall*'roven em'iricall* +ase$ on o+servation an$+ase$ on o+servation an$
ex'erimentationex'erimentation
-
8/10/2019 Trayectoria en Ingles
6/50
Tra,ector AnalsisTra,ector Analsis
Analysis of the path of a bullet' whileAnalysis of the path of a bullet' while
in +i"htin +i"ht
$t,s a snapshot in time$t,s a snapshot in time $t demonstrates the relationship$t demonstrates the relationship
between a rearm and the tar"etbetween a rearm and the tar"et
-
8/10/2019 Trayectoria en Ingles
7/50
TerminologTerminolog
Perforate - to pass all the wayPerforate - to pass all the way
throu"hthrou"h Penetrate - to enter and stay inPenetrate - to enter and stay in
Primary impact - the rst impactPrimary impact - the rst impact
econd' third' etc. impacts impactsecond' third' etc. impacts impactsafter the rstafter the rst
-
8/10/2019 Trayectoria en Ingles
8/50
Ca%tionsCa%tions
0ullets travel in curved lines0ullets travel in curved lines 1owever' we approximate the bullet,s1owever' we approximate the bullet,s
path with a strai"ht linepath with a strai"ht line
2ou must consider many thin"s2ou must consider many thin"s icochetsicochets De+ectionsDe+ections
3ariations in surfaces3ariations in surfaces $ntervenin" !b4ects$ntervenin" !b4ects The pitch and yaw of movin" vehiclesThe pitch and yaw of movin" vehicles The biomechanics of the human bodyThe biomechanics of the human body
-
8/10/2019 Trayectoria en Ingles
9/50
Ot#er Ca%tionsOt#er Ca%tions
2our %nowled"e of the rearm2our %nowled"e of the rearm 54ection patterns54ection patterns tipplin" patternstipplin" patterns
Powder ammunition loadsPowder ammunition loads 1ei"ht 6 wei"ht of the1ei"ht 6 wei"ht of the
hooter7s8hooter7s83ictim7s83ictim7s8
9ot all people re "uns the same9ot all people re "uns the samewayway Trainin" 6 experienceTrainin" 6 experience
:urniture 6 vehicles can be moved:urniture 6 vehicles can be moved
-
8/10/2019 Trayectoria en Ingles
10/50
True tra4ectory ; C1T =$95
Straig#t vs* C%rve$Straig#t vs* C%rve$
Tra,ectorTra,ector
A bullet,s true +i"ht path is aparabola' or curved line.
*e approximate the +i"ht path byusin" a strai"ht line.
-
8/10/2019 Trayectoria en Ingles
11/50
-./ P#ases o0 1allistics-./ P#ases o0 1allistics
$nternal 5xternal Terminal
?. $nternal 0allistics@ $nside the rearm
. 5xternal 0allistics@ 0etween the rearm 6
the tar"et
-./ i+l S#-./ P i+l S#
-
8/10/2019 Trayectoria en Ingles
12/50
-./ Possi+le S#ooter-./ Possi+le S#ooter
Position 2onesPosition 2ones
MostPro+a+le
Possi+le&+%t
Aw3war$
Im'ossi+le
2ONE 4 5 Most Pro+a+le 2ONE 6 5 Possi+le& +%t Aw3war$
2ONE . 7 Im'ossi+le
-
8/10/2019 Trayectoria en Ingles
13/50
8orces Acting on a 1%llet in8orces Acting on a 1%llet in
8lig#t8lig#t
$nertia$nertia
>ravity>ravity
:riction 7air:riction 7air
resistance8resistance82aw2aw
-
8/10/2019 Trayectoria en Ingles
14/50
Can Assist in AnsweringCan Assist in Answering
9%estions:9%estions:
9umber of participants9umber of participants
=ocation of participants=ocation of participants
Position /orientation of participantsPosition /orientation of participants
9umber and types of rearms9umber and types of rearms
Direction of bullet pathsDirection of bullet paths equences of eventsequences of events
-
8/10/2019 Trayectoria en Ingles
15/50
;evises %se$ to
-
8/10/2019 Trayectoria en Ingles
16/50
E>%i'ment T#at Yo% (illE>%i'ment T#at Yo% (ill
Nee$Nee$
ods' cones and washersods' cones and washers
An"le nderAn"le nder
ProtractorsProtractors
Colored strin" and eyeletsColored strin" and eyelets
ibbons / colored post-it notesibbons / colored post-it notes TripodTripod
-
8/10/2019 Trayectoria en Ingles
17/50
E>%i'ment T#at Yo% (illE>%i'ment T#at Yo% (ill
Nee$Nee$
Tape measuresTape measures
Chal% line 6 plumb bobChal% line 6 plumb bob
cientic calculatorcientic calculator
=aser=aser
=adders=adders CamerasCameras
-
8/10/2019 Trayectoria en Ingles
18/50
In0ormation Yo% (illIn0ormation Yo% (ill
Nee$Nee$
Approximate location of theshooter7s8
Approximate location of theApproximate location of thevictim7s8victim7s8
9umber of shots red 6 the9umber of shots red 6 the
sequencesequence Types of weapons 6 calibersTypes of weapons 6 calibers
-
8/10/2019 Trayectoria en Ingles
19/50
Two Points o0 Re0erenceTwo Points o0 Re0erence
Pro4ectile paths are most accuratelyPro4ectile paths are most accuratelydetermined when the pro4ectile hasdetermined when the pro4ectile has
passedpassed throu"h two or more solidthrou"h two or more solid
surfacessurfaces
-
8/10/2019 Trayectoria en Ingles
20/50
Single Point o0 Re0erenceSingle Point o0 Re0erence
:or a:or a sin"le pointsin"le point' accuracy is' accuracy isdependant upondependant upon
The nature of the material struc%The nature of the material struc%
tyrofoam vs clothin"tyrofoam vs clothin" The thic%ness of the materialThe thic%ness of the material
( thic% foam vs ( thic% foam( thic% foam vs ( thic% foam
-
8/10/2019 Trayectoria en Ingles
21/50
;oc%menting t#e;oc%menting t#e
Tra,ectorTra,ector
!3515AD D$A>AE!3515AD D$A>AE
5=53AT$!9 D$A>AE5=53AT$!9 D$A>AE
5FP=!D5D 3$5* D$A>AE5FP=!D5D 3$5* D$A>AE
7overhead view with walls folded7overhead view with walls folded
down8down8
-
8/10/2019 Trayectoria en Ingles
22/50
Collecting Evi$enceCollecting Evi$ence
A:T5 C15E$CA= T5T$9> A9DA:T5 C15E$CA= T5T$9> A9D
P1!T!>AP1P1!T!>AP1 :$9>5P$9T P!*D5 A9D TAP5:$9>5P$9T P!*D5 A9D TAP5
=$:T D5:5CT=$:T D5:5CT
E$G!$= CAT$9> EAT5$A= B-DE$G!$= CAT$9> EAT5$A= B-D
-
8/10/2019 Trayectoria en Ingles
23/50
-
8/10/2019 Trayectoria en Ingles
24/50
-
8/10/2019 Trayectoria en Ingles
25/50
-
8/10/2019 Trayectoria en Ingles
26/50
-
8/10/2019 Trayectoria en Ingles
27/50
At Least Two Points o0At Least Two Points o0
Re0erenceRe0erence
-
8/10/2019 Trayectoria en Ingles
28/50
;OC?MENTATION O8;OC?MENTATION O8
-
8/10/2019 Trayectoria en Ingles
29/50
Entrance @ ExitEntrance @ Exit
-
8/10/2019 Trayectoria en Ingles
30/50
Si$e -lateral/ AngleSi$e -lateral/ Angle
-
8/10/2019 Trayectoria en Ingles
31/50
?'war$ ;ownwar$ Angle?'war$ ;ownwar$ Angle
-
8/10/2019 Trayectoria en Ingles
32/50
AngleAngle
-
8/10/2019 Trayectoria en Ingles
33/50
ElevationsElevations
-
8/10/2019 Trayectoria en Ingles
34/50
ELE
-
8/10/2019 Trayectoria en Ingles
35/50
POSITIONSPOSITIONS
-
8/10/2019 Trayectoria en Ingles
36/50
POSITIONSPOSITIONS
POSITION O8POSITION O8
-
8/10/2019 Trayectoria en Ingles
37/50
POSITION O8POSITION O8
-
8/10/2019 Trayectoria en Ingles
38/50
CALI1ERSCALI1ERS
-
8/10/2019 Trayectoria en Ingles
39/50
MO
-
8/10/2019 Trayectoria en Ingles
40/50
-
8/10/2019 Trayectoria en Ingles
41/50
-
8/10/2019 Trayectoria en Ingles
42/50
M?22LE ;ISTANCEM?22LE ;ISTANCE
;ETERMINATIONS;ETERMINATIONS These determinations are onlyThese determinations are only
approximations.approximations.
ome variables that can aIect theseome variables that can aIect these
distances are@distances are@ The si#e of the "unThe si#e of the "un
The caliber of the "unThe caliber of the "un
The amount of powder in the cartrid"eThe amount of powder in the cartrid"e ome people reload their cartrid"esome people reload their cartrid"es
$ntermediate ob4ects 7clothin"' etc.8$ntermediate ob4ects 7clothin"' etc.8
-
8/10/2019 Trayectoria en Ingles
43/50
CONTACTCONTACT
0last destruction' tearin" of the s%in or0last destruction' tearin" of the s%in orclothin") soot and powder particles mostlyclothin") soot and powder particles mostlyon the inside of the "arment and/or drivenon the inside of the "arment and/or driveninto the wound.into the wound.
The outline of certain parts of the "un 7i.e.The outline of certain parts of the "un 7i.e.barrel bushin"' front si"hts8 may leave anbarrel bushin"' front si"hts8 may leave animpression on the s%in around the woundimpression on the s%in around the wound
The "ases from the explosion of the pistolThe "ases from the explosion of the pistoltear the s%in and create a ra""ed entrancetear the s%in and create a ra""ed entrancewound.wound.
A stellate 7star shaped8 wound is oftenA stellate 7star shaped8 wound is often
seen in head shots.seen in head shots.
-
8/10/2019 Trayectoria en Ingles
44/50
-
-
8/10/2019 Trayectoria en Ingles
45/50
NEAR CONTACT -47NEAR CONTACT -47
INC)ES/INC)ES/ Dar% soot with dense deposits ofDar% soot with dense deposits of
unburned and partially burnedunburned and partially burned
powder particles are often seenpowder particles are often seen
around the bullet holearound the bullet hole blast destruction is still possible inblast destruction is still possible in
clothin" and even s%in in some casesclothin" and even s%in in some cases
Tattooin"/stipplin" 7unburned "unTattooin"/stipplin" 7unburned "unpowder becomin" imbedded under thepowder becomin" imbedded under the
s%in8 is often seen on the s%ins%in8 is often seen on the s%in
. D INC)ES 8ROM T)E
-
8/10/2019 Trayectoria en Ingles
46/50
.7D INC)ES 8ROM T)E.7D INC)ES 8ROM T)E
TARBETTARBET ome medium to li"ht "ray soot'ome medium to li"ht "ray soot'
with a rou"hly circular pattern' or awith a rou"hly circular pattern' or a
distribution of powder particles maydistribution of powder particles may
be seen around the bullet hole.be seen around the bullet hole.
tipplin" is still possible'tipplin" is still possible'
particularly with dense and/or poorlyparticularly with dense and/or poorlyburnin" powders.burnin" powders.
# $ #i 3 #i(# $ #i 3 #i
-
8/10/2019 Trayectoria en Ingles
47/50
(#at $o o% t#in3 t#is(#at $o o% t#in3 t#is
$istance mig#t +e$istance mig#t +e
D 6 C S OD 6 INC)ES 8ROM T)E
-
8/10/2019 Trayectoria en Ingles
48/50
D76 INC)ES 8ROM T)ED76 INC)ES 8ROM T)E
TARBETTARBET 9o soot is visible9o soot is visible
There will be a widely dispersed patternThere will be a widely dispersed pattern
of powder particles' often looselyof powder particles' often loosely
adherin" to the receivin" surfaceadherin" to the receivin" surfaceA circular pattern of powder can beA circular pattern of powder can be
seen at closer distances' but theseen at closer distances' but the
circular pattern may become poorlycircular pattern may become poorlydened to nonexistent at "reaterdened to nonexistent at "reater
distances.distances.
-
8/10/2019 Trayectoria en Ingles
49/50
.7 8EET OR BREATER.7 8EET OR BREATER
9o soot or circular rin"s of9o soot or circular rin"s of
powder are presentpowder are present
0ullet wipin" may be present0ullet wipin" may be presentaround the mar"in of the entryaround the mar"in of the entry
side of the bullet hole re"ardlessside of the bullet hole re"ardless
of ran"eof ran"e
-
8/10/2019 Trayectoria en Ingles
50/50
CONCL?SIONCONCL?SION
T15 AD3A9TA>5 !: P12$CA=T15 AD3A9TA>5 !: P12$CA=
53$D59C5 AT 1!!T$9> C59553$D59C5 AT 1!!T$9> C595
$ T1AT $T CA9 05