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Ungayikhetha kanjani isigqoko sesigqoko esifanele?

ISIKHATHI: 2019-12-20 HITS: 26

How to chooes a right bulletproof helmet?

Up to now, bullet-proof helmet has become a necessity for soldiers’ survival in combat. A good helmet can protect the wearer's head from high-speed splashes of bullet debris and even protect soldiers from direct attack of bullets. However, with the development of the modem war and battlefield environment, the traditional helmets can no longer fully meet our needs. As a result, in response to these needs, the manufacturers began to develop different helmets with different structures and materials. Here are some suggestions about how to choose right helmets for yourself.


1. Isakhiwo sesigqoko


1) Isigqoko se-PASGT

I-PASGT ukuhanjiswa koHlelo Lokusebenza Kwabasebenzi ku-Ground Troops. Yasetshenziswa okokuqala ngamasosha ase-US ngonyaka we-1983. Ngemuva kokuthuthuka okuqhubekayo, iya ngokuya ikhula ngokwengeziwe futhi ilungele ukwakheka, ukwakheka nomsebenzi. Isibonelo, kuhlale kukhona ojantshi ezigqokeni, ezingafakelwa izambatho zifuna ukuthwala imigqomo yokubuka ebusuku kanye nethoshi, njll. Kepha kukhona nezithiyo ngaphandle kokusikwa kwendlebe, azikwazi ukubambisana nemishini yokuxhumana kahle. Kepha indawo yayo evikelayo inkulu kunezinye izinhlobo.


2) Isigqoko sokuzivikela

Isigqoko sokuzivikela se-MICH (Isigqoko Sokuxhumana Esididiyelwe) sakhiwe futhi sakhiwa ngesisekelo sesigqoko se-PASGT, sinokujula okungaphansi kwesigqoko se-PASGT. Kwenziwa ngokususa ama-eaves, imichilo yemihlathi, amasimba wokujuluka nezinsimbi zezintambo ze-PASGT, kuyilapho kungezwa uhlelo lokulungiswa kwamaphuzu amane nohlelo lokumiswa kwesiponji oluzimele, olwenza isigqoko se-MICH sikhululeke kakhudlwana, futhi sizivikele ngokwengeziwe. Ngaphezu kwalokho, kuhlala kukhona ojantshi ezigqokeni, ezingafakelwa izambatho zifuna ukuthwala imigqomo yokubuka ebusuku kanye nethoshi, njll. Lesi isigqoko asisihlukile kakhulu kunesigqoko sokuqala se-PASGT, kepha singabambisana ne-headset nezinye izinto zokuxhumana okungcono, futhi ngenxa yalokho kubiza kakhulu kunesigqoko se-PASGT.


3) Isigqoko sokugcina

I-FAST imfushane kwi-future Assault Shell Technology. Lolu hlobo lwesigqoko senziwe njengokukhanya ngangokunokwenzeka esakhiweni sokuhlangabezana nezidingo zokuvikela. Ngokusikwa kwendlebe okuphezulu kakhulu, amasosha angasebenzisa kakhulu amadivaysi okuxhumana uma egqoke lolu hlobo lwezigqoko. Ngaphezu kwalokho, kuhlala kukhona ojantshi ngezigqoko zokuvikela izigqoko, ezivumela ukuphatha izesekeli eziningi ezifana namalambu we-ebusuku-pono, amakhamera, izibuko, izimbobo zokuvikela ubuso. Kunezinhlobo ezahlukene zezigqoko zokuvikela ze-FAST ezinokusikeka kwendlebe kuhlukile ekuphakameni, okuholela ekungafani kwendawo yokuvikela nokwakheka.

 

Lolu hlobo lwesigqoko lubukeka luyimfashini futhi lukhululekile ukulugqoka. Zisetshenziswe amasosha amaningi ase-US. Kodwa-ke, kufanele kuphawulwe ukuthi indawo yayo yokuvikela incishiswa kakhulu ngokusikwa kwendlebe okuphezulu. Ngakho-ke, akunconywa lapho imishini yokuxhumana ingekho isidingo. Ngaphezu kwalokho, lesi sigqoko sesitshe esiviza kakhulu phakathi kwalawa amathathu.

Sekukonke, lezi zigqoko ezi-3 zezinhlamvu zinezinto zazo ezikhethekile zokwakheka nemisebenzi. Ngakho-ke, lapho sithenga isigqoko sobumbumbulu, kufanele senze ukhetho olunengqondo ngokuya ngesimo sokusebenzisa kanye nezidingo zangempela.


2. Ukuvikelwa Kwamandla

Traditionally, helmets need to be able to merely defend against spattering stones and metal fragments on the battlefield. V50 value is usually used to measure the helmet's protective capability. (Shooting a helmet with oblique cylindrical projectiles with a mass of 1.1 grams at different speeds within a specified distance. When breakdown probability reaches 50%, the average velocity of the projectile is named V50 value of helmets.) Of course, The higher the V50 value, the better the helmet performance.

Eqinisweni, izigqoko zokuvikela izigqoko eziningi emakethe ziyi-NIJ eziqeqeshiwe ngezinga lokuvikelwa le-IIIA, okusho ukuthi likwazi ukuvikela ngokumelene nepistol ngisho nesibhamu. Bangakwazi ukuvikela ngokumelene ne-9 mm Para kanye. I-Magnum ebangeni lamamitha ayi-44, ithuthukisa kakhulu ukusinda kwamasosha ekulweni.


I-3. Indaba

Ngokuthuthuka okusheshayo kwesayensi yezinto ezibonakalayo kusukela ngasekupheleni kwekhulu lama-20 kuya kulelikhulu lama-21, kuye kwenziwa izinhlobo ezahlukahlukene zokwenza izigqoko zokuvikela izigqoko. Njengoba lezi zinto zokwakha zonke zinezimpawu zazo ezihlukile, izigqoko zokuvikela izigqoko ezenziwe ngezinto ezahlukahlukene zidinga izimo ezihlukile zemvelo ngesikhathi sokusetshenziswa kwazo nokulondolozwa, okufanele kucatshangwe lapho kukhethwa izigqoko zokuvikela izigqoko.


Manje, kukhona ikakhulukazi izinto ezintathu zokwenza izigqoko zokuvikela izigqoko, i-Pe, i-Kevlar, ne-bulletproof.


1) I-Pe

I-PE lapha ibhekisela ku-UHMW-PE, isifinyezo se-polyethylene yesisindo se-Ultra-high. Luhlobo olusezingeni eliphezulu lomsebenzi we-organic okhiqizwe ekuqaleni kweminyaka yama-80s yekhulu leminyaka elidlule. Inokuqina okukhulu kwe-Ultra-high, ukumelana nokushisa okuphansi, ukumelana nokukhanya kwe-UV, kanye nokumelana namanzi, okwenza ukugcinwa kwemikhiqizo ye-bullet-proof kube lula kakhudlwana; kodwa futhi kunezingqinamba ezithile. Isibonelo, isengozini yokushisa okuphezulu, futhi ayivimbeli i-creep kanye ne-Kevlar. Ngakho-ke, imikhiqizo ye-PE bullet-proof ayiphakanyisiwe ukuthi isetshenziswe ezindaweni ezinamazinga okushisa aphezulu, njenge-Middle East, i-Afrika eshisayo, lapho izinga lokushisa lingafinyelela ku-50 ~ 60 ℃. Ngaphezu kwalokho, ngenxa yokungahambi kahle kokuqubuka kwayo, ayikwazi ukusetshenziswa ngaphansi kwengcindezi ephezulu isikhathi eside. Kepha uma uyiqhathanisa nesigqoko sikaKevlar, ilula ngesisindo futhi ishibhile kakhulu.


2) Kevlar

U-Aramid, owaziwa nangokuthi uKevlar wazalwa ngasekupheleni kweminyaka yama-1960s. Yindwangu entsha yokwenza ubuchwepheshe obuphezulu obuphakeme obunamandla okumelana nokushisa okuphezulu, i-anticorrosion enkulu, isisindo esikhanyayo namandla amakhulu. Kodwa-ke, i-aramid inamaphutha amabili abulalayo:

Isengcupheni yokukhanya kwe-ultraviolet. Ihlala ihlaza lapho ivezwa ukukhanya kwe-ultraviolet.

I-hydrolyze elula, noma ngabe isendaweni eyomile, isazothatha umswakama emoyeni futhi kancane kancane ibe yi-hydrolyze.

Therefore, aramid equipment should not be used or stored in the environment with strong ultraviolet light and high humidity for a long time, or its protective performance and service life will be greatly reduced. But even so, Kevlar helmet is still the mainstream equipment in the US Army and European army. In addition, the helmet has paint and polyuria coating on the surface, which can reduce the damage caused by moisture and ultraviolet radiation. If the coating on your helmet is damaged, you'd better paint it as soon as possible or replace it with a new one. The increase of the usage of Kevlar has pushed up the price of Kevlar's raw materials, and then the price of Kevlar helmets.

Ngakho-ke, lapho uthenga isigqoko sesigqoko sobumbumbulu, kufanele sikhethe kahle ezintweni ezibonakalayo ngokuya ngesimo sokusebenzisa kanye nezidingo zangempela.


Manje, ukuze kuhlangatshezwane nezidingo ezahlukahlukene, izigqoko zokuvikela izigqoko ze-MICH, ze-FAST ziklanyelwe ngojantshi abasebenza ngendlela enobuchule bokuxhuma izesekeli ezithile, njengokukhanya kokukhanya ebusuku, amakhamera, kukhulisa kakhulu izinga lokuthola ulwazi nokuzivumelanisa nezimo ekusebenzeni okuhlukahlukene izindawo. Ujantshi onjalo uvame ukubiza cishe ama- $ 10 kuye ku- $ 20, kuye ngenkampani, ipulatifomu nomthengisi.


Uma ufuna ukuthenga izigqoko zokuvikela izigqoko, wamukelekile ukuxhumana nathi. I-Deekon isinikezelwe isikhathi eside ekuthuthukisweni nasekucwaningeni kwemishini yezinhlamvu, sinikeza ikhwalithi ye-NIJ III PE Hard Armor Plates nama-NIJ IIIA vests, kanye neminye imikhiqizo eminingi. Lapho ubheka ukuthengwa kwemikhiqizo yokuzivikela, ungavakashela iwebhusayithi yeDekon ukuthola okungcono kakhulu kuwe.