Editing Frank Whittle (section)

===Rolls-Royce===
Earlier, in January 1940, Whittle had met Dr [[Stanley Hooker]] of [[Rolls-Royce Limited|Rolls-Royce]], who in turn introduced Whittle to Rolls-Royce board member and manager of their Derby factory, [[Ernest Walter Hives, 1st Baron Hives|Ernest Hives]] (later Lord Hives). Hooker was in charge of the supercharger division at Rolls-Royce Derby and was a specialist in [[fluid dynamics]].  He had already increased the power of the [[Rolls-Royce Merlin|Merlin]] piston engine by improving its supercharger.{{sfn|Hooker|2002|p=52}} Such a speciality was naturally suited to the aero-thermodynamics of jet engines in which the optimisation of airflow in compressor, combustion chambers, turbine and jet pipe, is fundamental. Hives agreed to supply key parts to help the project. Also, Rolls-Royce built a compressor test rig which helped Whittle solve the [[Compressor stall|surging]] problems (unstable airflow in the compressor) on the W.2 engine.{{sfn|Hooker|2002|p=68}}

On 10 December 1941 Whittle suffered a [[nervous breakdown]], and left work for a month.{{sfn|Nahum|2004|p=89}}  However, by the end of January 1942, Power Jets had three W.2B engines, two built by Rover. In February 1942, flight trials of the W.1A engine began in the E.28, which reached 430&nbsp;mph (690&nbsp;km/h) at 15,000&nbsp;feet (4,600&nbsp;m).  On 13 March 1942, Whittle started work on a redesign of the W.2B, referred to as the W.2/500. 
On 13 September 1942, W.2/500 performance tests matched predictions, showing a thrust of {{convert|1750|lbf|N}} at full speed. In October 1941, the Ministry approved a new factory to be built outside [[Whetstone, Leicestershire]].{{sfn|Golley|1987|pp=183–185, 188–189, 200}}

From 3 June until 14 August 1942 Whittle visited the United States.  At the [[General Electric]]'s Lynn Factory, Whittle reviewed the Type I Supercharger, GE's code name for their jet engine, based on Power Jets' W.1X.  An improved version of the W.2B would also be built, called the [[General Electric J31|I-16]], incorporating features of the W.2/500.  Whittle also toured the [[Bell Aircraft]], and the three [[Bell XP-59A Airacomet]]s, a twin-engine fighter powered by the [[General Electric I-A]] jet engines. This fighter took flight in October 1942, one year and one day after GE received Power Jets' W.1X.{{sfn|Golley|1987|pp=182–183, 192–199}}

On 11 December 1942 Whittle had a meeting with the chief executive of the  [[Ministry of Aircraft Production]] Air Chief Marshal [[Wilfrid Freeman]] and Air Marshal Francis Linnell, Controller of Research and Development at MAP, According to Whittle, "He made it clear that he had definitely decided to transfer Barnoldswick and Clitheroe to Rolls-Royce management." [[Spencer Wilks]] of Rover met with Hives and Hooker at the "Swan and Royal" pub, in Clitheroe, near the Barnoldswick factory. By arrangement with the Ministry of Aircraft Production<ref>{{cite web |url=https://www.flightglobal.com/pdfarchive/view/1946/1946%20-%200235.html |title=Archived copy |access-date=21 February 2016 |archive-date=5 March 2016 |archive-url=https://web.archive.org/web/20160305070802/https://www.flightglobal.com/pdfarchive/view/1946/1946%20-%200235.html |url-status=dead }}</ref> they traded the jet factory at Barnoldswick for Rolls-Royce's [[Rolls-Royce Meteor|tank engine]] factory in Nottingham.Testing and production ramp-up was immediately accelerated. [[Adrian Lombard]] Rover's supervising engineer on the Whittle engines transferred to Rolls Royce to continue the role. By January 1943, Rolls-Royce had achieved 400 hours of run time, ten times Rover's number of the previous month, and in May 1943, the W.2B passed its first 100-hour development test at {{convert|1600|lbf|N}} of thrust.{{sfn|Golley|1987|pp=202–205}}

When Rolls-Royce became involved, Ray Dorey, the manager of the company's Flight Centre at [[Hucknall Aerodrome|Hucknall Airfield]] on the north side of Nottingham, had a Whittle W.2B engine installed in the rear of a [[Vickers Wellington]] bomber.{{sfn|Hooker|2002|p=106}}{{sfn|Golley|1987|p=206}}<ref>Verbal evidence from Flight Test Engineer W R (Bill) Grose who operated the Whittle engine in the Wellington and had previously been involved in ground test running of the Whittle engine at either Lutterworth or Rugby</ref> The installation was done by Vickers at Weybridge.<ref>Men Of Power, Robert Jackson, Pen % Sword Aviation, Barnsley 2006, {{ISBN|1844154270}}, p. 85</ref>

From the end of 1937, when a Squadron Leader, he lived at 'Broomfield' on Bilton Road, in Rugby. Both sons were at school in the town.<ref>''Rugby Advertiser'' Friday 14 June 1940, page 8</ref> He later briefly lived at 'Laurelcroft', 1 North Street, [[Kilsby]] until 1949.<ref>''Rugby Advertiser'' Friday 28 May 1948, page 6</ref><ref>''Rugby Advertiser'' Friday 23 December 1949, page 6</ref> His two sons went to [[Rossall School]] in Blackpool. Ian later joined the RAF.<ref>''Birmingham Post'' Thursday 16 October 1952, page 5</ref>