The planned Su-57M will be equipped with a new engine from NPO Saturn in the mid-2020s under the development designation izdeliye 30. The engine is designed with an estimated thrust of 11 tonnes (107.9 kN, 24,300 lbf) dry and 17.5 tonnes (171.7 kN, 38,600 lbf) in afterburner. In addition to improved performance, reliability, and costs compared to the AL-41F1, the new powerplant will also reduce the aircraft's radar and infrared signature with glass-fibre plastic IGVs and a new nozzle with serrated flaps. Armament The Su-57 has two tandem main internal weapon bays each approximately long and wide and two side weapon bays with triangular section fairings under the fuselage near the wing root. The main bays have two types of ejection launchers made by Vympel, the UVKU-50L for missiles weighing up to , and the UVKU-50U for ordnance weighing up to ; the side bays use the VPU-50 launch rails. For air-to-air combat, the Su-57 carries four beyond-visual-range missiles in its two main weapons bays and two short-range missiles in the side bays. The primary medium-range missile is the active radar-homing R-77M (izdeliye 180), an upgraded R-77 variant with AESA seeker, dual-pulse motor, and conventional rear fins. The short-range missile is the infrared-homing ("heat seeking") R-74M2 (izdeliye 760), an upgraded R-74 variant with reduced cross-section for internal carriage. A clean-sheet design short-range missile designated K-MD (izdeliye 300) is being developed to eventually replace the R-74M2. For longer ranged applications, the izdeliye 810 missile, a further development of the R-37M, can be carried with two in each main weapons bay. For striking surface targets, the aircraft can carry the KAB-250 or KAB-500 precision guided bombs in its main bays. Internal weapons also include the Kh-38M air-to-ground missile, Kh-35U (AS-20 "Kayak") anti-ship missile, Kh-58UShK (AS-11 "Kilter") anti-radiation missile, and Kh-59MK2 cruise missile. For missions that do not require stealth, the Su-57 can carry stores on its six external hardpoints which can use most Russian tactical fighter weapons. New hypersonic missile with characteristics similar to the Kh-47M2 Kinzhal ALBM is also being developed for the Su-57. The missile is to have intra-body accommodation and smaller dimensions to allow it to be carried inside the Su-57's main bays. The aircraft has a 9A1-4071K (GSh-30-1) 30 mm autocannon with 150 cartridges mounted internally near the right LEVCON root. The weapon has an effective range of against aerial targets and against surface targets. Cockpit The Su-57