GABUNGKAN MODIVIKASI PAL AFV DENGAN FUTURE CV 9040, K-21 NIFV, EFV.

PAL-AFV (photo : Angkasa)

Bukan rahasia lagi kalau TNI-AL masih memakai armada tank amfibi buatan era 1960-an dalam operasi pendaratan pantai. Memang untuk urusan dapur pacu, kendaraan buatan Rusia ini telah mengalami perubahan dengan mengusung mesin diesel Detroit. Di luar itu untuk soal safety tank berkode BTR-50PM ini mau tak mau harus mengalami perombakan.

Modifikasi kemudian dilakukan dalam bentuk kerjasama antara Korps Marinir TNI AL dengan Divisi Teknologi PT PAL, Surabaya. Dari hasil analisa bisa ditemukan sejumlah kelemahan pada BTR-50. Kelemahan pertama datang dari radiator batch. Saat diajak berlayar komponen ini sangat mudah kemasukan air yang mengucur melalui radiator grill. Memang dalam kondisi stabil, terdapat pompa-pompa bilga yang berfungsi untuk menguras air dari radiator batch dan dasar ranpur. Namun saat bergerak dalam kondisi laut bergelombang, derasnya air yang masuk bisa membuat pompa-pompa kewalahan, atau bahkan mengakibatkan pompa ogah bekerja.

KLIK DISINI MOBILITAS BTR 50 DI DARAT KELEMAHAN LAIN LETAK WATERJET PROPULSI TERLALU TINGGI MENGURANGI DAYA DORONG WAKTU BERENANG.
BTR-50 TERLALU PELAN DI AIR & RENTAN TENGELAM WAKTU AIR PASANG TINGGI.


Kelemahan kedua datang dari bagian belakang tank yang kelewat rendah. Dalam kondisi terapung, posisinya hampir sejajar dengan permukaan air. Keadaan akan berjalan normal bila tank diajak berlayar di laut tenang.

Pengerjaan modifikasi kemudian dilaksanakan di Divisi Harkan (Pemeliharaan dan Perbaikan) PT PAL dalam tempo sebulan. Pengujian dalam bentuk inclining test dikerjakan pada pertengahan Agustus tahun lalu dengan menggunakan fasilitas syncro-lift dock milik Divisi Kapal Perang PT PAL. Pengujian lapangan (sea trial) juga dilakukan di alur perairan PT. PAL.


Tank amfibi BTR-50PM hasil modifikasi PT PAL, Surabaya. Perombakan lebih diarahkan buat mendongkrak tingkat safety kendaraan. (photo : Angkasa)

Ada beberapa keuntungan bisa diraih dari modifikasi. Daya apung, stabilitas, serta tingkat safety terdongkrak. Hal ini dilakukan dengan mengubah sudut tekukan di bagian depan menjadi lurus dan disertai pengaturan letak pintu palka (hatch) commander, driver, dan gunner. Selanjutnya untuk bagian belakang (kompartemen mesin) mengalami peninggian dan dibuat bersudut. Selain berfungsi menahan terjangan air, penambahan ini juga berguna untuk meningkatkan perlindungan frontal tank. Hasil uji coba menyebutkan, daya apung tank bertambah empat ton dari kondisi semula.




Bukan cuma bagian luar, kabin tank pun juga kena sentuh perubahan. Pilar-pilar yang semula dianggap mengganggu saat kondisi darurat dihilangkan. Sebagai penggantinya, struktur penguat dibuat dengan model cantilever. Komponen insulasi juga ikutan dipasang guna mengurangi tingkat kebisingan dan panas di dalam kabin. Terakhir, perangkat tambahan berupa GPS plus echo –sounder tertanam rapi pada dashboard tank.

(Edkol Angkasa : Alutsista Dalam Negeri, Maret 2009)

MODIVIKASI TANK AMFIBI PAL AFV HARUSNYA DAPAT MENGADOPSI BEBERAPA PERLENGKAPAN TANK - TANK SEPERTI DIBAWAH INI.

KLIK DISINI PASANG KANON TURET 40MM CV 9040 BESERTA PERLENGKAPANYA.
KLIK DISINI ATAU KANON TURET 40MM K-21 NIFV DOSAN BESERTA PERLENGKAPANYA.

TAMBAHKAN PERLENGKAPAN YANG ADA DI EFV INI.
Expeditionary Fighting Vehicle
Design
Diagram of Personnel Carrier variant.

The EFV, designed by General Dynamics Land Systems, is an amphibious armored tracked vehicle with an aluminum hull. The engine is a custom MTU Friedrichshafen diesel (MT883) with two modes of operation; a high power mode for planing over the sea, and a low power mode for land travel. It has a crew of three and can transport 17 Marines and their equipment. The EFV is the first heavy tactical vehicle with a space frame structure.

The hull has a hydraulically actuated bow flap to aid planing with a maximum waterborne speed of 46 kilometres per hour (29 mph; 25 kn). Shrouded Honeywell waterjet propulsors are integrated into each side of the hull, which create over 2,800 horsepower. It is also outfitted with hydraulically actuated chines to cover the tracks while in seafaring mode. The rear loading ramp is not able to open while the vehicle is afloat, typical of other swimming military ground vehicles.

The vehicle uses an ethernet network connected by the Tactical Switch Router, based on the COTS DuraMAR Mobile IP router for its internal and external communications.


Move - Water

* Self-deploying
* High-water-speed capable, 20-25 knots fully loaded in Sea State 3
* Seamless one-button transition mode at speeds of 10 knots
* Transition through 6 foot plunging surf.
* Directly supports the Marine Corps' Expeditionary Maneuver Warfare.
* Provides high-speed transport of embarked Marine Infantry from ships located beyond the horizon (25 NM) to inland objectives.

Armament
The electronically powered two-man MK46 turret on the personnel variant accommodates the commander on the right and gunner on the left, a fire control system, and the main and coaxial weapons.

The standard version has a Mk44 Bushmaster II 30 mm cannon, which fires up to 250 rounds per minute with single, burst, and fully automatic capabilities up to 2,000 metres (2,200 yd) in all weather conditions. A general purpose M240 7.62 mm machine gun with 600 rounds of ready-to-use ammunition is mounted coaxially with the main gun. Smoke grenade launchers are installed on the hull.

Countermeasures
Test bed undergoing stress testing
It is fitted with composite armor, mine-blast protection, and a nuclear, biological and chemical defense system. The aluminum hull has caused some concern due to protection issues.However, aluminum hulls have been used for decades in military ground vehicles and watercraft.

In June 2007 members of the House Armed Services Subcommittee on Seapower and Expeditionary Forces sent a letter to the Commandant of the Marine Corps urging that the EFV be redesigned to give troops better protection against roadside bombs. The Marines have suggested that underbelly armor appliqué could be applied after the EFVs come ashore and before they encounter IEDs. The limited protection the EFV offers is an improvement on that offered by the AAV so the replacement is an advantage, given the current doctrine of using landing craft for land patrols.

However, tests in January and February 2010 at Aberdeen Test Center demonstrated that the EFV offers blast protection equal to a category-2 Mine Resistant Ambush Protected vehicle, including two simulated improvised explosive devices under its belly and tracks. Tests also show that it has superior protection from direct and indirect fire. The flat hull, which has endured persistent criticism for not being the more blast-resistant V-shape, is necessary for the EFV to plane across the surface of the water and reach its high speed, while dealing with sea states of Category 4.

RETRACTABLE HYDRONEUMATIC SUSPENSION & WATERJET NYA JAUH TERLETAK DIBAWAH BODI TANK MENAMBAH DAYA DORONG WAKTU BERENANG.


Type Amphibious Assault Vehicle
Place of origin United States
Service history
In service 2015 (Planned).
Used by United States Marine Corps
Production history
Manufacturer General Dynamics
Variants EFVP
EFVC
Specifications
Weight 38 short tons (34.5 metric tons)
Length 10.67 m (35 ft)
length 9.33 m (30.6 ft)
Width 3.66 m (12 ft)
Height 3.28 m (10.7 ft) (turret roof)
Crew 3 crew

17 fully equipped marines (EFVP)
7 command crew (EFVPC)

Armor ceramic/composite
Primary
armament 30 mm MK44 cannon (EFVP)
7.62 mm machine gun (EFVPC)
Secondary
armament 7.62 mm machine gun (EFVP)
none (EFVPC)
Engine MTU Friedrichshafen MT 883 Ka-524 diesel engine
2,702 hp (2,016 kW) (water), 850 hp (635 kW) (land)
Power/weight 34.48 bhp/ton
Operational
range land: 523 km (325 miles)
water: 120 km (74 miles)
Speed road: 72.41 km/h (45 mph)
water: 46 km/h (28.6 mph) (water)

Mobility
The EFV's 25 nautical miles (46 km; 29 mi) range for amphibious landing may no longer prove sufficient, given the increasing ranges of shore launched anti-ship missiles.

The EFV's need for high water speed has resulted in an engine that is even more powerful than the M1 Abrams, even though the EFV weighs far less.

KLIK DISINI ADOPSI SISTEM SUSPENSINYA, SISTIM HIDROLIS LAINYA DAN WATERJET PROPULSION.


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KLIK DISINI KENDARAAN AMFIBI EFV INI SANGAT BAGUS PADA AIR PASANG TINGGI & DAPAT DIOPRASIKAN JAUH DARI PANTAI.