By the end of 1944, the OKL (High Command of the Luftwaffe) realized that a better high-altitude fighter was needed, and they wanted to take advantage of the new He S 011 jet engine which was being developed. Thus, the Emergency Fighter Competition came into being. By February 1945, three proposals had been received from Messerschmitt, two from Focke-Wulf and one each from Heinkel, Junkers and Blohm & Voss. 
          The Blohm & Voss entry was the BV P.212.03. The first of the BV P.212 designs featured a short, squat fuselage, with a short air intake to the He S 011 jet engine in the fuselage rear. The wings were swept back at 45 degrees, and featured a small amount of dihedral. Two small vertical fins were located near the wingtips. The second of the BV P.212 designs was a refinement of the previous BV P.212.01. The fuselage was lengthened, and the wings now featured downturned wingtips in place of the wingtip fins of the BV P.212.01. 
          The BV P.212.03 was the final design and the one presented to the OKL in the Emergency Fighter Program. The fuselage was again lengthened, with larger internal fuel tanks being installed. The wings were swept back at 40 degrees and featured pronounced dihedral. Both downturned wingtips and small fins and rudders were designed for the BV P.212.03. In addition, the wings were designed to be built out of either wood, steel or aluminum, although the first versions were to have the usual stressed skin steel construction. One interesting feature that Blohm & Voss designer Dr. Vogt used for many of his projects (BV P.209.01, P.210.01, P.211) that was also included in the
BV P.212.03 design was the bent steel air intake duct that was also used as a fuselage inner load-bearing structure (see photo below). A pressurized cockpit was designed for the pilot, and the armament load could be varied greatly (see table below). 2700 liters (713 gallons) of fuel could be carried, 2100 liters internally in the wings and fuselage and 300 liters in two under wing drop tanks, giving an endurance of close to four hours. 
          Although the Focke-Wulf Ta 183 was chosen for production in late February, three prototypes were ordered and construction began in May 1945, after exhaustive windtunnel and structural tests. The first aircraft was to make its first flight in August and the second aircraft was to be ready by September 1945 September 1945. Of course, the end of the war ended all construction. 
Model photo of the BV P.212
Mario Merino's Bv P.212.03 art images
Tor Pedersen's Bv P.212.03 art images

    Span: 9.5 m (31' 2.3")     Length: 7.55 m (24' 9.5")      Max. Speed: 1034 km/h (642 mph) 

Although this is the steel air-intake/fuselage load-bearing structure for the BV P.211.02, the Bv P.212.03 structure would be very similar.    Left: The air intake is on the left, the engine would attach at the right end of the bottom, round pipe. 
Right: On the left is the fuselage structure, with the wing attachment point clearly visible. The cockpit would be located above the rounded air intake to the right.
B&V P.212.03 R4M cutaway

B&V P.212.03 armed with 22 R4M rockets and two MK 108 30mm cannon

B&V P.212.03 bomb cutaway

B&V P.212.03 armed with SC 500 bomb and three MK 108 30mmm cannon

B&V P.212.03 seven gun cutaway

B&V P.212.03 armed with seven MK 108 30mm cannon

BV P.212.02 
company prototype
BV P.212.03 
w/2 X-4 air-to-air missiles
 BV P.212.03 
w/5 MK 108 cannon & drop tanks
The above three illustrations are from Reichdreams Dossier #15 by Justo Miranda & Paula Mercado 
Below are various projected weapons and ammunition for the B&V P.212.03
2 MK 108 2x 100 rounds
3 MK 108 3x 100 rounds
5 MK 108 5x 60 rounds    or 
3x 100 rounds and 
2x 60 rounds
7 MK 108 7x 60 rounds
2 MK 103 2x 70 rounds
1 MK 112 1x 50 rounds
2 MK 103 and 
2 MG 151/15
2x 70 rounds and 
2x 150 rounds
1 MK 112 and 
2 MK 108
1x 50 rounds and 
2x 60 rounds
22 R4M rockets and 
2 MK 108
2x 100 rounds
3 MK 108 and 
1x SC 500 bomb
3x 100 rounds