What about the XP-47J, 507mph during tests, wouldn't it be the first allied aircraft?
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First RAF aircraft (and first allied aircraft) to exceed 500 mph in level flight.
the remainder were all Jumo 004 powered, with the V7 prototype destined to make history on August 2, 1944 as the first jet aircraft ever to fly a reconnaissance mission.
In April 1944, Erprobungskommando 262 was formed at Lechfeld in Bavaria as a test unit to introduce the 262 into service and train a core of pilots to fly it. Major Walter Nowotny was assigned as commander in July 1944, and the unit redesignated Kommando Nowotny. Essentially a trials and development unit, it holds the distinction of having mounted the world's first jet fighter operations. Trials continued slowly with initial operational missions against the Allies in August 1944, allegedly downing 19 Allied aircraft for six Me 262s lost, although these claims have never been verified by cross-checking with USAAF records. The RAF Museum holds no intelligence reports of RAF aircraft engaging in combat with an Me 262 in August 1944, although there is a report of an unarmed encounter between an Me 262 and a Mosquito.[10] Despite orders to stay grounded Nowotny chose to fly a mission against an enemy formation. After an engine failure he was shot down and killed on 8 November 1944 by 1st Lt Edward "Buddy" Haydon of the 357th Fighter Group, USAAF and Capt Ernest "Feeb" Fiebelkorn of the 20th Fighter Group, USAAF. The "Kommando" was then withdrawn for further training and a revision of combat tactics to optimise the 262's strengths.
By January 1945, Jagdgeschwader 7 (JG 7) had been formed as a pure jet fighter unit, although it would be several weeks before it was operational.
No. 616 Squadron RAF was the first to receive operational Meteors, 14 of them. The squadron was based at RAF Culmhead, Somerset and was previously equipped with the Spitfire VII. After a short conversion course at Farnborough for the six leading pilots, the first aircraft were delivered in July [1]. The squadron was soon moved to RAF Manston on the east Kent coast and, within a week, 30 pilots were deemed successfully converted.
The RAF initially reserved the aircraft to counter the V-1 flying bomb threat with No.616's Meteors seeing action for the first time on 27 July 1944 with three aircraft active over Kent. After some initial problems, especially with jamming guns, the first two V1 "kills" occurred on 4 August. In total, the Meteor accounted for 14 flying bombs. The anti-V1 missions of 27 July 1944 were the Meteor's (and the Royal Air Force's) first operational jet combat missions.
The Vampire flew in September 1943, the XP-47J in November. (the XP-47J was the first piston engined plane to exceed 500 mph) Republic XP-47J Thunderbolt
The fifth prototype, DG206, powered by two de Havilland Halford H.1 engines due to problems with the intended Whittle W.2 engines, was the first to become airborne on 5 March 1943 from RAF Cranwell, piloted by Michael Daunt[1] Development then moved to Newmarket Heath and, later, a Gloster-owned site at Moreton Valence. The first Whittle-engined aircraft, DG205/G, flew on 17 June 1943
First purposely built Jet trainer, Fokker S.14:
Is what?The first aircraft with variable pitch propellor
The Wasserfall was the first selfguided surface to air missile.
The first aircraft with variable pitch propellor
Now that he mentioned it, what was the first aircraft to use an adjustable pitch prop? Hydromatic?