Some details for the original competitors to what became Hawk.
The HS.1182, BAC P.59 and P.60 were actually submitted before the ASR was raised and based on the requirements of a draft Staff Target and export studies. The P.59 was developed from the P.54 and designed to be the cheapest to meet the requirements and retain export value.
HS.1182: Span 32ft, length 38.5ft, wing area 190sq ft, AUW 9,780lb, wing loading 51.5lb/sq ft 1x 5,000lb Adour (unreheated), max speed M0.83, max cruise speed 490kts, 7.0 mins to 30,000ft.
HSA also briefly considered versions with twin Larzac-01 or JT-15D. With Larzac engines the AUW was 9,880lb, max speed M.082, max cruise speed 490kts, 10 mins to 30,000ft.
P.54-3: AUW 8,500lb, max speed M0.83, 6.0 mins to 30,000ft.
P.54-6: AUW 8,476lb, max speed M0.83, 6.5 mins to 30,000ft.
P.55: a variant of the Jet Provost with a Viper 600 and required avionics. No strike version as no substantial improvement over Strikemaster possible.
P.59: Span 29.6ft, length 35.8ft, wing area 145sq ft, AUW 9,800lb, wing loading 67.7lb/sq ft 1x 4,000lb Viper 600, max speed M0.82, max cruise speed 500kts, 7.7 mins to 30,000ft.
P.60F1: P.59: Span 28.2ft, length 41.5ft, wing area 160sq ft, AUW 10,957lb, wing loading 68.5lb/sq ft 1x 5,000lb Adour (unreheated), max speed M0.96, max cruise speed 500kts, 7.8 mins to 30,000ft, endurance 1.75 hours at sea level.
Other members of the P.60 included the P.60F2 with reheated Ardour for close air support roles. The F2 was to reach M1.2 at altitude.
The P.61F with a RB.199 for close air support and air superiority roles was also closely related to the P.60 family. The P.61F would be a scaled down MRCA with an empty weight of 15,000lb, max speed 0.9M at low level. Avionics would consist of a radar with a dish of AI.23 or Cyrano II size and day-attack avionics. 6x Taildog AAMs. Studies included single and twin-seaters with fixed and VG wings. Only wanted by RAF is a CAS platform.
The P.61F2/F3 was a further development of the P.60F2 with an RB.199-34R reheated fanje for a max speed of Mach 2.0.
Source: AIR 2/18602