Engine: Allison V-1710-29, 38 mm Bulletproof Glass - Windshield9.5 mm Steel - Behind Pilot's Head6.5 mm Steel - Pilot's Seat6.5 mm Steel - In Front of PilotSelf-Sealing Fuel Tanks, The YP-38 is armed with:1 x 37 mm M4 cannon, nose-mounted (15 rpg)2 x 12.7 mm M2 Browning machine guns, nose-mounted (200 rpg = 400 total)2 x 7.62 mm Browning machine guns, nose-mounted (500 rpg = 1,000 total) History: After the loss of the XP-38 in 1939, the program still showed great potential and, on April 27, 1939 a Limited Procurement Order was placed for thirteen test aircraft. Given serials 39-689-701, the aircraft were designated model 122-62-02 and had many similarities to the final P-38G. Redesigned with Allison V-1710-27/29 (F2R and F2L) boasting 1,150HP and also equipped with B-2 Turbo-Superchargers they featured Spur Reduction Gearing as opposed to the former Epicylical Gearing found on the XP-38. This caused the engines thrust line to be raised upwards, as well the propellers were ,Outward-Rotating rather than Inward-Rotating. (The port propeller rotated Counter-Clockwise when seen from the rear, and the starboard Clockwise). This gave much stability when firing the guns and allowed the aircraft to be a much more effective combat aircraft.The aircraft's chin-mounted intake under the propeller spinner was also replaced by a pair of cooling intakes, as well as enlarged radiators on both sides of the tail booms. The armament was also revised, substituting two 0.30in. machine guns with two of the four 0.50in. machine guns, and the 37mm Browning M9 was exchanged for a 20mm cannon. With all of the guns mounted in the nose, with the 0.50in. guns mounted above the 0.30in., some YP-38s were observed to have permanent gun enclosure tubes protecting the two 0.50in guns, with flush plates to cover the remaining gun ports. In reality, most of the YP-38s flew unarmed, and due to the structural redesigning, the aircraft was lighter than the XP-38 at 14,348lbs. Credit jamesPLANESii's Lockheed P-38 Lightning