First flying on 8 September 1939 as the Vultee Model V-48, the P-66 was originally ordered by Sweden, but an arms embargo diverted them to the United States Army Air Forces.
The initial prototype had an aerodynamic pointed spinner, however after being damaged in a landing accident it was rebuilt with a conventional spinner. This was subsequently used on all future production aircraft.
Sweden ordered 144 V-48C fighters, the a US arms embargo resulted in none being delivered. The USAAF took possession of around 50 aircraft which were used as advanced fighter trainers. With a tendency to ground loop, 25 were lost in accidents.
Britain acquired 100 P-66 Vanguard Mk.I fighters, intending to used them as advanced trainers in Canada. However after evaluation they were passed on the China.
Around 104 P-66s were sent to China from British and US stocks. Aircraft were assembled in Karachi and then flown to China. Several were lost on their delivery flight and others deemed unairworthy abandoned in India.
Outclassed by Japanese fighters they were largely replaced by Curtiss P-40s in 1943.
Vultee Model V-48 internal structureVultee Model V-48 internal structure. Note Swedish MarkingsVultee Model V-48 internal structure. Note Swedish MarkingsVultee P-66 Vanguard internal structure
In Chinese Service
Vultee P-66 Vanguard line drawingVultee P-66 Vanguard ready for delivery to ChinaVultee P-66 Vanguard Karachi Airfield in India on October 25,1942 ready for delivery to ChinaVultee P-66 Vanguard of the Chinese Nationalist Air Force American Volunteer Group undergoing maintenanceVultee P-66 Vanguard of the Chinese Nationalist Air Force
In British Service
Vultee Vanguard Mk.I BW209 undergoing British evaluationVultee Vanguard Mk.I BW209 undergoing British evaluationVultee Vanguard Mk.I BW209 undergoing British evaluation
In US Service
Vultee P-66 Vanguard in US markingsVultee P-66 Vanguard in US markingsVultee P-66 Vanguard in US markingsVultee P-66 Vanguard in US markingsVultee P-66 Vanguard in US markingsVultee P-66 Vanguard in US markingsVultee P-66 Vanguard in US markingsVultee P-66 Vanguard in US markings after a landing accidentVultee P-66 Vanguard in US markings after suffering a crash landing
The Ryan XF2R Dark Shark was a development of Ryan’s earlier FR-1 Fireball. First flying in November 1946, it retained the mixed power plant of its predecessor, but replaced the piston engine with a General Electric T31 turboprop engine. The jet intakes were moved from the wing roots to the fuselage sides and the vertical stabiliser was squared off.
Despite proving a capable aircraft the navy cancelled development as they considered all-jet aircraft to be superior. The Fireball had been designed at a time when jet aircraft lacked ranged, so for a brief time a mix of a jet and piston engines provided a solution. However by the time the Dark Shark flew jet engines were becoming more efficient.
Ryan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark SharkRyan XF2R Dark Shark
The Bloch MB.170 was a prototype bomber and reconnaissance aircraft designed for the French Air Force. The first of two prototypes first flew on 15 February 1938 and was designed to fill the role of either a two-seat attack bomber or a three-seat reconnaissance aircraft. The second prototype, was a three seat bomber, with the ventral cupola removed, a revised canopy and larger tail fins.
After evaluation and many modifications, the second prototype was chosen for production as the MB.174 light bomber. The Air Force placed an order for 50 aircraft, with the first one entering service in March 1940. The MB.174 replaced the Potez 637 that had proved too vulnerable in the reconnaissance role during the Phoney war.
Replacing the MB.174 on the production line was the MB.175. This bomber version incorporated a longer and wider fuselage, to enable larger bombs to be carried. Bombs of 100 to 200kg cold now be carried, whereas the MB.174 was limited to bombs of only 50kg.
Only 25 MB.175 aircraft were delivered before the Armistice. At this time, most MB.174 and MB.175s had been relocated to North Africa. During the Vichy period, MB.174s frequently flew over Gibraltar to monitor the British fleet.
After the Armistice, the Germans found several MB.174s and 175s and used for pilot training. Production of the MB.175 version recommenced under the German occupation, with the aircraft exported to Germany for use by the Luftwaffe as trainers.
To avert a potential supply shortfall of French engines, a version was designed to use Pratt & Whitney R-1830 radials. This MB.176 proved to have poorer performance than the 175, but went into production anyway. In reality the supply of American engines proved difficult and only five were delivered before the armistice.
To enable the use of Hispano-Suiza 12Y31 engines, the MB.177 incorporated redesigned engine mounts. The engines proved to be underpowered. The sole example was captured by German forces and taken to Rechlin for evaluation.
After the war, SNCASO resumed production of the MB.175 for the Aéronavale as a torpedo bomber designated MB.175T (later SO.175T).