Editing Heinkel He 219 Uhu (section)

===Further developments===
[[File:Jumo 222E 2.jpg|thumb|The troublesome [[Jumo 222]] multibank engine, meant for the He 219B and -C subtypes]]

The follow-on series to the He 219As in service was to be the ''He 219B'' fitted with the new 1,864&nbsp;kW (2,500&nbsp;hp) [[Junkers Jumo 222]]A/B 24-cylinder engines which would have allowed the He 219 to reach 700&nbsp;km/h (440&nbsp;mph). The He 219B was also to have had an increased span of 22.06&nbsp;m (72.38&nbsp;ft), for better high altitude performance. The Jumo 222 did not reach production status, with just under 300 examples built in at least three differing displacement sizes.<ref name="Smith & Kay p303">Smith and Kay 1972, p. 303.</ref> Only a few test machines were ever fitted with the engines; some additional airframes were built with the enlarged wing. These examples were intended to fly with high-altitude versions of the standard DB 603 powerplants in place of the Jumo 222 multibank powerplants, but only one or two test machines ever flew with them.{{citation needed|date=October 2024}}

A further adaptation would have been the He 219C, also intended to use the B-series design's big wing and Jumo 222 powerplants as well as an all-new fuselage of 17.15&nbsp;m (56.27&nbsp;ft), with a complete three-man Ju 388J cockpit section forward, converted to accept the He 219A's standard nose gear layout the Borsig-designed ''Hecklafette'' HL 131V "quadmount", hydraulic-powered four-[[MG 131 machine gun|gun]] manned tail turret intended for later He 177A versions and the [[Heinkel He 177#Further development-the Heinkel He 177B|He 177B-5]], as well as more than one ''Amerikabomber'' strategic bomber design competitor.<ref>[https://web.archive.org/web/20140309001843/http://www.germanaircraftwwii.com/img/upload/heee1_1.jpg Heinkel ''Typenblatt'' general arrangement drawing."] ''germanaircraftwwii.com''. Retrieved: 23 April 2015.</ref> Day bomber and night fighter versions were proposed and metal was cut for the project but since the 1,500-kW Jumo 222 engines remained experimental they never flew.{{citation needed|date=October 2024}}

Paper projects include the very-high-altitude He 219E with a vastly increased wingspan of 28.5&nbsp;m (93.5&nbsp;ft) and 1,500&nbsp;kW (2,000 PS) output rated DB 614 engines, which were apparently a further-uprated version of the never-produced DB 603G inverted V12, capable of the desired 1,491&nbsp;kW (2,000&nbsp;hp) power output level that Germany [[Bomber B#High-output engines|were unable to develop into a reliable powerplant]].{{citation needed|date=October 2024}}

A more reasonable project was the [[Hütter Hü 211]], a design by Wolfgang Hütter that took a standard He 219 fuselage and tail and added a long-span, high [[Aspect ratio (wing)|aspect ratio]] [[wing]] of 24.55&nbsp;m (80.54&nbsp;ft) to create a fast, high altitude [[Interceptor aircraft|interceptor]]. Since this design was also meant to be powered by the ill-fated Jumo 222 it never flew, although work continued on two sets of wings until they were destroyed by Allied bombing.{{citation needed|date=October 2024}}