What is cvn 22?
The CVN code is a special 3-4 digit code used as a security measure for all Internet transactions. A new Cryptogram Version Number (CVN) 18, which protects the full Issuer Application Data and allows for more protected data to be sent in the authorization. Sometimes called a card security code or card verification value, it provides extra protection against fraud.
“The CMV-22's maiden deployment with Carrier Air Wing (CVW) 2 and the Vinson (CVN 70) team is an operational success, giving me the confidence necessary to make the declaration,” said Rear Adm. Andrew Loiselle, Director, Air Warfare Division, N98, Office of the Chief of Naval Operations. “As we continue to deliver the advanced platforms that will make up the Air Wing of the Future, the CMV-22B provides the necessary support and more to carry our future force.”
Loiselle’s designation marks a key milestone in the design, development, acquisition and testing of the CMV-22B and confirms its relevance and readiness to meet the needs of the Navy’s Carrier Onboard Delivery (COD) mission. The aircraft transports personnel, mail, supplies and cargo from shore bases to aircraft carriers at sea, and will eventually replace the C-2A Greyhound.
“IOC designation is more than a stamp of approval,” said U.S. Marine Corps Col. Brian Taylor, V-22 Joint program manager. “It is a vote of confidence from top Navy leadership that the design, testing and production of this aircraft meet the logistical needs of the carrier air wings designated to fly the CMV-22B.”
This past summer marked the first deployment for the CMV-22B. Fleet Logistics Multi-Mission Squadron (VRM) 30 embarked on the USS Carl Vinson (CVN 70) alongside the F-35C Lightning II and E-2D Advanced Hawkeye squadrons. The first deployed detachment has executed a mission completion rate of 98% and a mission capable rate of 75%. The CMV-22B is a crucial element of future carrier airwings due to the cargo capacity needed to transport F-35 power modules and additional logistics support for future carrier air wing deployments with next-generation platforms.
“This aircraft went from first flight to first deployment in 19 months; a feat possible through the dedication of the Navy’s acquisition, engineering, test and operational communities, as well as industry, all working in tandem, toward a common goal,” said Taylor.
With 50% more internal fuel than the Marine Corps’ Osprey variant, CMV-22B can transport up to 6,000 pounds of cargo and personnel over a 1,150 nautical mile range. The Navy redesigned the forward sponson fuel tanks and added two wing fuel tanks to add capacity and extend the flight range.
Aircraft carriers are warships that act as airbases for carrier-based aircraft. In the United States Navy, these consist of ships commissioned with hull classification symbols CV (aircraft carrier), CVA (attack aircraft carrier), CVB (large aircraft carrier), CVL (light aircraft carrier), CVN (aircraft carrier (nuclear propulsion)). Beginning with the Forrestal-class, (CV-59 to present) all carriers commissioned into service are classified as supercarriers.
The United States Navy has also used escort aircraft carriers (CVE, previously AVG and ACV) and airship aircraft carriers (ZRS). In addition, various amphibious warfare ships (LHA, LHD, LPH, and to a lesser degree LPD and LSD classes) can operate as carriers; two of these were converted to mine countermeasures support ships (MCS), one of which carried minesweeping helicopters. All of these classes of ships have their own lists and so are not included here.
The first aircraft carrier commissioned into the United States Navy was USS Langley (CV-1) on 20 March 1922. The Langley was a converted Proteus-class collier (originally commissioned as USS Jupiter (AC-3), Langley was soon followed by the Lexington-class, USS Ranger (the first purpose-built carrier in the American fleet), the Yorktown-class, and USS Wasp. These classes made up the entirety of the United States carrier fleet active prior to the Second World War.
With World War II looming, two more classes of carriers were commissioned under President Franklin Roosevelt: the Essex-class, which are informally divided into regular bow and extended bow sub-classes, and the Independence-class, which are classified as light aircraft carriers. Between these two classes, 35 ships were completed. During this time, the Navy also purchased two training vessels, USS Wolverine and USS Sable, which were given the unclassified miscellaneous (IX) hull designation.
Late in World War II the Midway-class and the Saipan-class were constructed, but entered service too late to serve in the war. The Midway-class would go on to serve during the entire Cold War.
At the start of the Cold War, the first supercarriers, the United States-class, were canceled due to the Truman administration's policy of shrinking the United States Navy and in particular, the Navy's air assets. The policy was eventually revised after a public outcry and Congressional hearings sparked by the Revolt of the Admirals.
Later in the Cold War era, the first of the supercarriers to be launched were constructed, starting with the Forrestal-class, followed by the Kitty Hawk-class; Enterprise (CVN-65), the first nuclear powered carrier; and John F. Kennedy (CV-67), the last conventionally powered carrier. These were then followed by the Nimitz-class and the modern day post-cold war Gerald R. Ford-class nuclear supercarriers, the only two classes of supercarriers that are currently in active-duty service. With the ten-ship Nimitz-class complete by 2009, October 2013 saw the launch of Gerald R. Ford, lead ship of the planned ten-ship Gerald R. Ford-class. This was followed by the launch of John F. Kennedy (CVN-79) in October 2019, while construction is underway on Enterprise (CVN-80) and Doris Miller (CVN-81).
During World War II, the United States Navy purchased two Great Lakes side-wheel paddle steamers and converted them into freshwater aircraft carrier training ships. Both vessels were designated with the hull classification symbol IX and lacked hangar decks, elevators or armaments. The role of these ships was for the training of pilots for carrier take-offs and landings. Together the Sable and Wolverine trained 17,820 pilots in 116,000 carrier landings. Of these, 51,000 landings were on Sable.
Museum ships
Many auto parts are fixed by bolting, and there are various sizes and shapes of bolts and nuts used.And most bolting operations have a specified tightening force (=torque). Even parts that require uniform force on the contact surface have a fixed tightening sequence.
Why is the torque regulated?The vibration that comes inside when you drive a car is a small vibration that is damped by many parts.Various parts such as rubbers and springs used in automobiles are absorbing vibration for riding comfort.In fact, more vibrations and shocks stress auto parts.
- Continued driving without one of the two bolts securing the rubber mount bracket. Eventually, the bracket was torn -
If the tightening torque is lower than the specified torque, there is not enough friction between the bolt and the counterpart screw thread.In other words, the bolts do not have sufficient frictional force due to continuous vibration and shock, so they are gradually released.Bolt loosening can lead to bigger accidents.
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