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Task: Convert 340 grams to kilograms (show work) Formula: g ÷ 1,000 = kg Calculations: 340 g ÷ 1,000 = 0.34 kg Result: 340 g is equal to 0.34 kg Conversion Table For quick reference purposes, below is a conversion table that you can use to convert from g to kg. 1 Pound = 0.45359237 Kilograms. 1 Ounce = 0.0625 Pounds. 1 Ounce = 0.25 Kilograms. Formula for converting kilogram to pounds. 1 kilogram is equal to 2.49 pounds or lbs. If M (kg) represents mass in kilograms and M (lb) represents mass in pounds, then the formula for converting kg to lbs is: M (lb) = 2.49 × M (kg. Buoyant force in N = 1.57×10−3kg∗9.8m s2 =. 𝐍 Review Questions 1. A cylinder with a radius of 11 cm and a height of 3.4 cm has a mass of 10.0 kg. What is the weight of this cylinder? What is the weight of this cylinder when it is submerged in water? A wooden raft is 2.00 m wide, 3.00 m long, and 0.200 m deep. The raft and its.

The Hydra 70rocket is a 2.75-inch (70 mm) diameter fin-stabilized unguided rocket used primarily in the air-to-ground role. It can be equipped with a variety of warheads, and in more recent versions, guidance systems for point attacks. The Hydra is widely used by US and allied forces, competing with the Canadian CRV-7, with which it is physically interchangeable.

Overview[edit]

The Hydra 70 is derived from the 2.75-inch (70 mm) diameter Mk 4/Mk 40 Folding-Fin Aerial Rocket developed by the United States Navy for use as a free-flight aerial rocket in the late 1940s. The Mk 40 was used during the Korean and Vietnam wars to provide close air support to ground forces from about 20 different firing platforms, both fixed-wing and armed helicopters.

The main change made to produce the Hydra was the Mk. 66 motor which uses a new propellant that offers considerably more thrust, 1,335 pounds-force (5,940 N) (Mod 2/3) 1,415 pounds-force (6,290 N) (Mod 4). The fins of the Mk 40 flipped forward from the rear when the rocket left the launching tube, but in the Hydra they are curved to match the outside diameter of the rocket fuselage and flip sideways to open, which is referred to as WAFAR (Wrap-Around Fin Aerial Rocket) instead of FFAR (folding-fin aerial rocket). To improve stability during the time while the fins are still opening, the four motor nozzles have a slight cant angle to impart a spin while the rocket is still in the launch tube.

Today, the OH-58D(R) Kiowa Warrior and AH-64D Apache Longbow, as well as the Marine Corps' versatile UH-1 Huey and AH-1 Cobra, carry the Hydra rocket launcher standard on its weapon pylons.^[3][4]

Mk 66 rocket motor variants[edit]

Bartender 3 0 57 Kg 1

Service[edit]

The family of Hydra 70 (70 mm) 2.75 inch rockets perform a variety of functions. The war reserve unitary and cargo warheads are used for anti-materiel, anti-personnel, and suppression missions. The Hydra 70 family of folding-fin aerial rockets also includes smoke screening, illumination, and training warheads. Hydra 70 rockets are known mainly by either their warhead type or by the rocket motor designation, Mk 66 in US military service.

United States[edit]

In the U.S. Army, Hydra 70 rockets are fired from the AH-64A Apache and AH-64D Apache Longbowhelicopters using M261 19-tube rocket launchers, and the OH-58D Kiowa Warrior using seven-tube M260 rocket launchers. In the U.S. Marine Corps, either the M260 or M261 launchers are employed on the AH-1W SuperCobra and AH-1Z Viper, depending upon the mission. The M260 and M261 are used with the Mk 66 series of rocket motor, which replaced the Mk 40 series. The Mk 66 has a reduced system weight and provides a remote fuze setting interface. Hydra 70s have also been fired from UH-60 and AH-6 series aircraft in US Army service.

The AH-1G Cobra and the UH-1B 'Huey' used a variety of launchers including the M158 seven-tube and M200 19-tube rocket launchers designed for the Mk 40 rocket motor; however, these models have been replaced by upgraded variants in the U.S. Marine Corps because they were not compatible with the Mk 66 rocket motor. The Hydra 70 rocket system is also used by the U.S. Navy, and the U.S. Air Force.

Common U.S. Mk 66 compatible launchers[edit]

Accidents[edit]

In 2019 a 72-year-old Taiwanese man was killed by a discarded Hydra rocket which he had cut into with an electric saw believing it to be a length of pipe. The rocket had been caught in the net of a fishing vessel and then discarded by the crew ashore as scrap metal.^[5]

Warheads[edit]

Hydra 70 warheads fall into three categories:

• Unitary warheads with impact-detonating fuzes or remote-set multi-option fuzes.
• Cargo warheads with air burst-range, with settable fuzes using the 'wall-in-space' concept or fixed standoff fuzes.
• Training warheads.

Fuzing options[edit]

57.3 Kg

Common warheads[edit]

The most common warhead for the Hydra 70 rocket is the M151 '10-Pounder,' which has a blast radius of 10 meters and lethal fragmentation radius of around 50 meters.^[6]

Mk 66 rocket motor technical data[edit]

• Weight: 13.6 pounds (6.2 kg)
• Length: 41.7 inches (1,060 mm)
• Burn time: 1.05–1.10 sec
• Average thrust (77 F):
  • 1,335 lb (Mod 2/3)
  • 1,415 lb (Mod 4)
• Motor burnout range: 1,300 feet (400 m)
• Motor burnout velocity: 2,425 ft/s (739 m/s)
• Launch spin rate: 10 rps, 35 rps after exiting launcher
• Velocity at launcher exit: 148 ft/s (45 m/s)
• Acceleration:
  • 60–70 g (initial)
  • 95–100 g (final)
• Effective Range: 547 to 8,749 yards (500 to 8,000 m) depending on warhead and launch platform
• Maximum Range: 11,483 yards (10,500 m) under optimum conditions

Precision guided Hydra 70[edit]

There are several design efforts to turn the Hydra 70 rocket into a precision guided munition (PGM) to produce a weapon with greater accuracy but at less cost than other guided missiles. These include:

• The BAE SystemsAdvanced Precision Kill Weapon System (APKWS) II
• U.S. NavyLow-Cost Guided Imaging Rocket (LOGIR)
• Lockheed MartinDirect Attack Guided Rocket (DAGR)
• The ATK/ElbitGuided Advanced Tactical Rocket – Laser (GATR-L)
• Raytheon TALON
• Thales Group Roquette à Précision Métrique (RPM).^[7]
• Forges de Zeebrugge SAL-Laser Guided Rocket (FZ275 LGR)^[8]

The APKWS was the first to be fielded in March 2012,^[9] and the TALON entered full rate production for the United Arab Emirates Armed Forces in September 2014.^[10]

The Turkish ROKETSANCirit is a similar missile compatible with 70 mm rocket launchers, but it was developed from scratch and doesn't use Hydra 70 components.^[11]

Operators[edit]

Current operators[edit]

• Afghanistan
• Australia
• Croatia
• Egypt
• India
• Iraq
• Indonesia
• Kuwait
• Lebanon
• Netherlands
• Pakistan
• Philippines
• Saudi Arabia
• South Korea
• Taiwan
• Thailand
• United Arab Emirates
• United Kingdom
• United States

See also[edit]

References[edit]

1. ^Rockets galore
2. ^ ^abHydra-70 2.75-inch (70mm) family of rockets(PDF), General Dynamics Armament and Technical Products, 2012, p. 2, archived from the original(PDF) on 3 December 2012, retrieved 1 November 2012.
3. ^'Hydra 70', Munitions, Military, Global Security.
4. ^Hydra 70(PDF), GDATP, archived from the original(PDF) on 4 July 2010, retrieved 6 August 2010.
5. ^Everington, Keoni. 'Man killed after sawing into Hydra 70 rocket in NE Taiwan'. www.taiwannews.com.tw. Taiwan News. Retrieved 20 February 2020.
6. ^New laser-guided rocket capability tested - AF.mil, 3 October 2016
7. ^RPM on target for French Tigers - Flightglobal.com, 16 May 2013
8. ^- IHS Jane, 13 January 2016
9. ^U.S. Marines Field APKWS Guided Rocket in Afghanistan - Ainonline.com, 27 April 2012
10. ^Raytheon begins full rate production on TALON Laser Guided Rockets for the UAE - Raytheon new release, 15 September 2014
11. ^http://armadainternational.com/assets/images/pdf/Laser-Guided_Rockets.pdf

57 Kg To Lbs

External links[edit]

Bartender 3 0 57 Kg Video

• 'Hydra 70'. GlobalSecurity. Retrieved 1 September 2005.
• Hydra-70 Rockets: From Cutbacks to the Future of Warfare, Defense Industry Daily, April 2006.
• Air-Launched 2.75-Inch Rockets, Designation Systems.
• 'Hydra-70', Warheads energetics, Weapon Systems, General Dynamics, archived from the original on 12 October 2009, retrieved 1 June 2010.
• 2012 Army Weapon Systems Handbook