Editing Boeing CH-47 Chinook (section)

===CH-47F===
[[File:A U.S. Army CH-47F Chinook helicopter, with the 1st Battalion, 171st Aviation Regiment, Hawaii Army National Guard, carries infantrymen, with 1st Battalion, 114th Infantry Regiment, New Jersey Army National 120810-Z-KC506-117.jpg|thumb|right|CH-47F during the exercise [[Southern Accord 2012]]]]

In 2001, the CH-47F, an upgraded CH-47D, made its maiden flight. The first production model rolled out at Boeing's facility in [[Ridley Park, Pennsylvania]], and first flew on 23 October 2006.<ref>"New Boeing CH-47F takes flight", ''Aerotech News and Review'', 3 November 2006, p. 3.</ref> Upgrades included {{convert|4868|shp|lk=in|adj=on}} Honeywell engines and airframe with better integrated construction for lower maintenance requirements.<ref name="Boe_new_CH-47F">{{cite press release |url=http://boeing.mediaroom.com/2007-02-19-Boeings-New-CH-47F-Chinook-Helicopter-Begins-Operational-Test-Flights-with-U.S.-Army |title=Chinook Helicopter Begins Operational Test Flights with US Army |access-date=1 April 2015 |publisher=Boeing |date=19 February 2007 |archive-url=https://web.archive.org/web/20150402120933/http://boeing.mediaroom.com/2007-02-19-Boeings-New-CH-47F-Chinook-Helicopter-Begins-Operational-Test-Flights-with-U.S.-Army |archive-date=2 April 2015 |url-status=live}}</ref> The milled construction reduces vibration, as well as inspection and repair needs, and eliminates flexing points to increase service life.<ref>Holcomb, Henry. [http://www.philly.com/inquirer/breaking/business_breaking/20070817_FORT_CAMPBELL__Ky__-_It_was_104_degrees_on_the_Tarmac_alongside_the_big_helicopter_.html "New Look Chinook"]. ''The Philadelphia Inquirer'', 17 August 2007. [https://web.archive.org/web/20071228212017/http://www.philly.com/inquirer/breaking/business_breaking/20070817_FORT_CAMPBELL__Ky__-_It_was_104_degrees_on_the_Tarmac_alongside_the_big_helicopter_.html archive link]</ref> The CH-47F can fly at speeds of over {{convert|175|mi/h|km/h|abbr=on}} with a payload of more than {{convert|21000|lb|kg|abbr=on}}.<ref name="Boe_CH-47F_191">{{cite press release |url=http://boeing.mediaroom.com/2008-08-26-Boeing-Awarded-US-Army-Contract-for-191-CH-47F-Chinook-Helicopters |title=Boeing Awarded US Army Contract for 191 CH-47F Chinook Helicopters |access-date=1 April 2015 |date=26 August 2008 |archive-url=https://web.archive.org/web/20150402171010/http://boeing.mediaroom.com/2008-08-26-Boeing-Awarded-US-Army-Contract-for-191-CH-47F-Chinook-Helicopters |archive-date=2 April 2015 |url-status=live}}</ref> New avionics include a [[Rockwell Collins]] Common Avionics Architecture System (CAAS) cockpit, and [[BAE Systems]]' Digital Advanced Flight Control System (DAFCS).<ref name="Boe_new_CH-47F"/> [[AgustaWestland]] assembles the CH-47F under license, known as the Chinook ICH-47F, for several customers.<ref>[http://www.agustawestland.com/product/chinook-ich-47f-0 "Chinook ICH-47F."] ''AgustaWestland'', Retrieved 4 July 2013. {{webarchive |url=https://web.archive.org/web/20141106042942/http://www.agustawestland.com/product/chinook-ich-47f-0 |date=6 November 2014}}</ref> Boeing delivered 48 CH-47Fs to the U.S. Army through August 2008; at that time Boeing announced a $4.8&nbsp;billion (~${{Format price|{{Inflation|index=US-GDP|value=4800000000|start_year=2008}}}} in {{Inflation/year|US-GDP}}) contract with the Army for 191 Chinooks.<ref name="Boe_CH-47F_191"/>

[[File:CH-147F Chinook -17 (modified).jpg|thumb|left|A Canadian CH-147F at [[RIAT]] 2017 <!-- The Canadian designation is 147 not 47 -->]]
A CH-47F Block 2 is being implemented {{as of|2020|lc=y}}. The Block 2 aims for a payload of {{convert|22000|lb|kg|abbr=on}} with {{convert|4000|ft|m|abbr=on}} and {{convert|95|°F|°C|abbr=on}} high and hot hover performance, eventually increased up to {{convert|6000|ft|m|abbr=on}}, to carry the [[Joint Light Tactical Vehicle]]; maximum takeoff weight would be raised to {{convert|54000|lb|kg|abbr=on|sigfig=3}}. It has 20% more powerful [[Lycoming T55|Honeywell T55-715]] engines along with an active parallel actuator system (APAS) to enhance the digital advanced flight-control system, providing an exact torque split between the rotors for greater efficiency. A new fuel system combines the three fuel cells in each sponson into one larger fuel cell and eliminates intracell fuel transfer hardware, reducing weight by {{convert|90|kg|lb|abbr=on}} and increasing fuel capacity. Electrical capacity is increased by three 60&nbsp;kVA generators.<ref>{{cite web |last1=Warwick |first1=Graham |url=http://www.military.com/daily-news/2013/04/22/block-2-ch47f-to-tackle-payload-shortfalls.html |title=Block 2 CH-47F to Tackle Payload Shortfalls |publisher=Aviation Week's Defense Technology International edition |access-date=1 April 2015 |via=Military.com |date=22 April 2013 |archive-url=https://web.archive.org/web/20150723221657/http://www.military.com/daily-news/2013/04/22/block-2-ch47f-to-tackle-payload-shortfalls.html |archive-date=23 July 2015 |url-status=live}} ([http://aviationweek.com/awin/block-2-ch-47f-tackle-payload-shortfalls Original story] {{Webarchive |url=https://web.archive.org/web/20150403051203/http://aviationweek.com/awin/block-2-ch-47f-tackle-payload-shortfalls |date=3 April 2015}} Aviation Week )</ref><ref name="flightglobal31march15">{{cite web |last1=Trimble |first1=Stephen |url=http://www.flightglobal.com/news/articles/us-army-outlines-ch-47f-upgrades-for-100-year-lifespan-410729/ |title=US Army outlines CH-47F upgrades for 100-year lifespan |publisher=Flightglobal.com |access-date=31 March 2015 |date=31 March 2015 |archive-url=https://web.archive.org/web/20150402134931/http://www.flightglobal.com/news/articles/us-army-outlines-ch-47f-upgrades-for-100-year-lifespan-410729/ |archive-date=2 April 2015 |url-status=live}}</ref> The Advanced Chinook Rotor Blades (ACRB), derived from the cancelled [[RAH-66 Comanche]], were intended to improve lift performance in hot/high altitude conditions by 900&nbsp;kg (2,000&nbsp;lb); however, the US Army ultimately decided against implementing the ACRB due to persistent vibration during testing, Boeing denied the assertion that the vibration was a safety risk and believed it could be solved with dampeners. In addition, the aft rotor blade was stalling when in a swept back position.<ref>{{cite web |url=https://www.defensenews.com/digital-show-dailies/aaaa/2022/04/05/us-army-shelves-advanced-ch-47f-rotor-blades-due-to-issues-in-testing/ |title=US Army shelves advanced CH-47F rotor blades due to issues in testing |work=Defense News |last=Judson |first=Jen |date=5 April 2022 |access-date=19 April 2022}}</ref>

The U.S. Army plans for a Block 3 upgrade after 2025, which could include a new {{convert|6000|hp|kW|abbr=on}} class engine with boosted power capacity of the transmission and drive train developed under the future affordable turbine engine (FATE) program and a lengthened fuselage. The [[Future Vertical Lift]] program is planned to begin replacing the Army's rotorcraft fleet in the mid-2030s, initially focusing on medium-lift helicopters, thus the CH-47 is planned to be in service beyond 2060, over 100 years after the first entered service.<ref name="flightglobal31march15"/>