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NGHIEN cufu-TRAOD6| KHAO SAT T I N HIEU PHAT H O A C U A CO CAU VA BAP TAC DUNG SONG TRONG NGOI DAN KHI VA CHAM Vdl NEN DAT THE SURVEY ON INITIATIVE SIGNALS OF IMPACT FUZES, USED ELASTIC WAVES IN COLLISIONS WITH THE GROUND TS Pham Diic Hiing', KS Ho4ng TuSn Anh= 'Hoc vien Ky thuat Quan sir ^Tong cue Cong nghiep Qu6c phong TOM TAT Bdi bdo trinh bdy phuang phdp vd mot so ket qud tinh todn tin hieu phdt hoa ngoi va dap kieu tdc dung song img sudt ca hgc dau dan va chfm vai muc tieu Id nen ddt - Id kieu muc tieu dien hinh doi vai cdc ddu dan no manh Qua Idm ro han khd ndng iing difng ca cau tro cdc loai ngoi dan a mot so dieu kien nhat dinh Tir khoa: Ca cdu va dap song ddn hdi, cdm biin mijc tieu, phdt hoa ABSTRACT Presented method and results of calculation for firing signals impact fuzes with target sensor, used elastic waves in collisions with the ground Uereby, clarify the applicability of thi sensor in artillery fuzes in typical cases Keywords: Impact fuzes, elastic waves, target sensor, firing ISSN 0866 - 7056 TAP CHi CO KHi VIET NAM, S6 +2 nam 2015 w>vw.cokhivietnam.vn NGHIEN CUTU - TRAO D O I DAT VAN DE Khi dan va cham vai muc tieu 5, than dan se xuat hien va lan truyen song iing Cam nhan muc tieu th6ng qua song img suat lan truySn than dan va cham la mot cac nguyen ly cham no moi nhat duoc ling dung ngoi dan Nhiing umg dung som nhat dugc ghi nhan cac ngoi dan ten lira phong khong ca nhan tam thap, vi du nhu Igla [7], Tuy nhien, voi nhung iru the cua minh, chiing co the duofc sir dung cac ngoi dan ban muc tieu mat dat voi nhay phat hoa cao Vi vay, viee phan tich, danh gia kha nang lam viec dieu kien va cham vai nen dat la mot nhiem vu can thiet va eo the giai quyet dugc bang mo hinh ky thuat, dua vao ly thuyet hinh va lan truyen song iing suat eae vat the ran, ea ehe tuong tac dau dan - n k dit [1,2,3] suat dan h6i (nen) co bien d6cr^(0vai toe dp am Sau lan den ban 3, song se lan truy6n theo vaeh den loi s6ng vai bien (7, (t) Song lan truyen tai be mat cut cua loi thi bi phan xa quay tra lai duoi dang song gian (keo) Tai thai diem chuyen tir mat tiep giap voi chay sang mat dau cua loi s6ng, theo nguyen ly Hopkinson thi chay se bi khoi mat dau voi van tocv^ [5,6,7] 2.2 Trinh ty tinh toan Tin hieu ung suat dau vao a mui dan dau dan tuong tae voi muc tieu nen dat co dang [4,7]: TINH TOAN VAN TOC NAY CUA CON CRAY TIN HIEU PHAT HOA CHO MACHNO 2.1 NguySn ly Iam viec cua cam bien muc tieu tac dung song vng suat Hmh trinh bay sa d6 ket cau ciia cam biln muc tieu tac dung song ijrng suit: Bg phan cam n h ^ la vat din s6ng co gSn chi tilt (con chay) nho lire (16 xo hoac lue hut tu) Vat din song dugc kep chat vao ban kim loai 3, ban c6 thi chinh la mot phan cua than dan C.-P.,-v;-A (1) Trong do-.D^- Duong kinh than dan; Sj - Bg day than dan; p^ - Mat dp vat lieu lam than dan;/7„, - Mat dp moi truong (muc tieu); v^ - T6c dp va cham ciia dau dan voi muc tieu; C, - He s6 luc can chinh dien, xac dinh dua tren thuc tien thu nghiem Voi mgt so loai dan c6 duong kinh tir 57 din 650 mm, chop gio dang voi goc a dinh 30" ^36", dang o-van va parabol, tdc dp va cham thir nghiem tir 50 den 800 m/s, goc cham tir vao muc tieu dit biin mat dp 800 kg/m^ din be t6ng mat dp 2300 kg/ m\ CO the tinh Q = 1) Vdt ddn song: 2) Con chay ) Bdn co dinh; 4) Thdn dgn: 5) Muc tieu:
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