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Description
Replacing the Tornado F.5 as the RAF's premier air defence asset from 2009 onwards, the British Aerospace-built version of the F-25A/B was known in service as the Typhoon FGR.1 and T.2 respectively and featured several significant changes from its American cousins.
Firstly, the type deleted several carrier-spec pieces of equipment such as folding wings and catapult spurs to save weight and complexity.
  Next, the original General Electric F414 engines were replaced with the Eurojet EJ200. This engine was originally developed by Rolls-Royce as the XG.40 technology demonstrator and was intended to power the defunct European Fighter Aircraft. Rolls-Royce thought that the XG.40 had promise as a replacement for the F404 and RB199 compact turbofans, and so continued to develop the concept in partnership with MTU, Fiat and ITP.
Thirdly, the main sensors were replaced with domestic counterparts. The AN/APG-81 active phased array radar was ditched in favour of a Marconi ACR-2000 passive phased array system derived from Blue Vixen; while the internal Lockheed Martin EOTS thermal imager/laser rangefinder was dropped for a similar system (TILDS) developed by Marconi in concert with Leonardo in Italy and Rafael in Israel.
Finally, the British aircraft retained the Mauser BK-27 internal 27mm revolver cannon, while the US models used the 25mm GAU-22 4-barrel rotary gun instead.

Although initially intended for few reasons beyond national chauvinism, the British changes in fact allowed the licence-built aircraft to enter service two years ahead of their American counterparts due to infighting between subcontractors and repeated butting of heads between the Pentagon, Congress, McDonnell Douglas and Lockheed Martin. This allowed the British-assembled aircraft to make several export deals ahead of their cousins from Fort Worth.
Cleared with all the usual RAF fighter-bomber weapons, the Typhoon fleet would be upgraded to Tranche 2 standard in the early 2020s with the addition of uprated engines, new avionics, improved mission computers and clearance of new weapons.

Specifications (FGR.1):
Crew: 1
Length: 55 ft 5 in (16.9 m)
Wingspan: 11.2 m (36 ft 9 in)
Height: 15 ft 5 in (4.7 m)
Wing area: 501 sq ft (46.5 m2)
Empty weight: 26,015 lb (11,800 kg)
Gross weight: 37,920 lb (17,200 kg)
Max takeoff weight: 56,400 lb (25,600 kg)
Powerplant: 2 × Eurojet EJ200 Mk.102 augmented turbofans, 13,000 lbf (57.8 kN) dry; 22,000 lbf (97.9 kN) with afterburner

Performance:
Maximum speed: 1,195 mph (1,923 km/h, 1,038 kn), or Mach 1.81 at 36,000 ft (10,973m)
Cruise: Mach 1.2
Combat range: 620 mi (1,000 km, 540 nmi)
Ferry range: 1,800 mi (2,900 km, 1,550 nmi)
Service ceiling: 50,000 ft (15,000 m)
g limits: +9.0

Armament:
1 × Mauser BK-27 27mm revolver cannon, 180 rounds
4 × internal stations, 6 × external stations on wings with a capacity of 5,700 lb (2,600 kg) internal, 15,000 lb (6,800 kg) external, 18,000 lb (8,200 kg) total weapons payload.
Internal: 8 × AAM’s, mix of AIM-120C AMRAAM, AIM-132 ASRAAM and MBDA Meteor; up to 12 × MBDA Brimstone/Brimstone Dual Mode; up to 12 × MBDA SPEAR-3 (from 2028); 4 × 500lb Enhanced Paveway IV or 1000lb Enhanced Paveway II guided bombs internally; 2 × 2000lb-class Enhanced Paveway III (BLU-109 or Mk.84).
External: 2 × MBDA Storm Shadow ASM; 8 × CRV7 70mm rocket pods; 6 × MBDA ALARM ARM; 12 × Brimstone or SPEAR-3; 6 × AMRAAM or Meteor; up to 10 × ASRAAM; or up to 14 × free-fall/guided bombs.

*               *               *

Feeling generous? Buy me a coffee

*               *               *

For backstory on the JALF, LFX and AASF projects, see here .

You can see the rest of the stuff in this AU here: Saxonverse: the Premiership of Harry Saxon

Description
Replacing the Tornado F.5 as the RAF's premier air defence asset from 2009 onwards, the British Aerospace-built version of the F-25A/B was known in service as the Typhoon FGR.1 and T.2 respectively and featured several significant changes from its American cousins.
Firstly, the type deleted several carrier-spec pieces of equipment such as folding wings and catapult spurs to save weight and complexity.
  Next, the original General Electric F414 engines were replaced with the Eurojet EJ200. This engine was originally developed by Rolls-Royce as the XG.40 technology demonstrator and was intended to power the defunct European Fighter Aircraft. Rolls-Royce thought that the XG.40 had promise as a replacement for the F404 and RB199 compact turbofans, and so continued to develop the concept in partnership with MTU, Fiat and ITP.
Thirdly, the main sensors were replaced with domestic counterparts. The AN/APG-81 active phased array radar was ditched in favour of a Marconi ACR-2000 passive phased array system derived from Blue Vixen; while the internal Lockheed Martin EOTS thermal imager/laser rangefinder was dropped for a similar system (TILDS) developed by Marconi in concert with Leonardo in Italy and Rafael in Israel.
Finally, the British aircraft retained the Mauser BK-27 internal 27mm revolver cannon, while the US models used the 25mm GAU-22 4-barrel rotary gun instead.

Although initially intended for few reasons beyond national chauvinism, the British changes in fact allowed the licence-built aircraft to enter service two years ahead of their American counterparts due to infighting between subcontractors and repeated butting of heads between the Pentagon, Congress, McDonnell Douglas and Lockheed Martin. This allowed the British-assembled aircraft to make several export deals ahead of their cousins from Fort Worth.
Cleared with all the usual RAF fighter-bomber weapons, the Typhoon fleet would be upgraded to Tranche 2 standard in the early 2020s with the addition of uprated engines, new avionics, improved mission computers and clearance of new weapons.

Specifications (FGR.1):
Crew: 1
Length: 55 ft 5 in (16.9 m)
Wingspan: 11.2 m (36 ft 9 in)
Height: 15 ft 5 in (4.7 m)
Wing area: 501 sq ft (46.5 m2)
Empty weight: 26,015 lb (11,800 kg)
Gross weight: 37,920 lb (17,200 kg)
Max takeoff weight: 56,400 lb (25,600 kg)
Powerplant: 2 × Eurojet EJ200 Mk.102 augmented turbofans, 13,000 lbf (57.8 kN) dry; 22,000 lbf (97.9 kN) with afterburner

Performance:
Maximum speed: 1,195 mph (1,923 km/h, 1,038 kn), or Mach 1.81 at 36,000 ft (10,973m)
Cruise: Mach 1.2
Combat range: 620 mi (1,000 km, 540 nmi)
Ferry range: 1,800 mi (2,900 km, 1,550 nmi)
Service ceiling: 50,000 ft (15,000 m)
g limits: +9.0

Armament:
1 × Mauser BK-27 27mm revolver cannon, 180 rounds
4 × internal stations, 6 × external stations on wings with a capacity of 5,700 lb (2,600 kg) internal, 15,000 lb (6,800 kg) external, 18,000 lb (8,200 kg) total weapons payload.
Internal: 8 × AAM’s, mix of AIM-120C AMRAAM, AIM-132 ASRAAM and MBDA Meteor; up to 12 × MBDA Brimstone/Brimstone Dual Mode; up to 12 × MBDA SPEAR-3 (from 2028); 4 × 500lb Enhanced Paveway IV or 1000lb Enhanced Paveway II guided bombs internally; 2 × 2000lb-class Enhanced Paveway III (BLU-109 or Mk.84).
External: 2 × MBDA Storm Shadow ASM; 8 × CRV7 70mm rocket pods; 6 × MBDA ALARM ARM; 12 × Brimstone or SPEAR-3; 6 × AMRAAM or Meteor; up to 10 × ASRAAM; or up to 14 × free-fall/guided bombs.

*               *               *

Feeling generous? Buy me a coffee

*               *               *

For backstory on the JALF, LFX and AASF projects, see here .

You can see the rest of the stuff in this AU here: Saxonverse: the Premiership of Harry Saxon