The ItP-1, and its many production variants, is a Cossack supersonic interceptor produced by WURCo., a Cossack arms company. The ItP-1 is designed to fly at near-hypersonic speeds and extremely high altitudes in order to engage hypersonic weaponry or aircraft and high-altitude bombers or reconnaissance aircraft.
The ItP-XX Program, which was dedicated to producing a counter to the technologically sophisticated Imperial R44, was headed by a collaboration between prominent WURCo. aircraft designers, Marina Primakov and Vikentiy Ilyich.
The first production model, the ItP-1a, was rushed for early export to the Ashoyian Armed Forces, where a total of sixty-five models were ordered and were put into immediate production to fulfill the order of the agreement.
The decadence of the Air Force had been a consistent feature of the FRCP since its inception; with outdated aircraft, underwhelming attention, and multitudes of money sinks on programs that amounted to nothing. However, the War in the South Seas put a special focus on the role of air forces in modern combat, a role of which the Cossack Air Force was extremely inept at performing. Cossack aircraft losses in the South Seas War totaled 73 combat aircraft, twenty-four of those in the first hours of the war. Compared to the enemy aircraft they faced, the Cossack Air Force was easily able to be outrun, outmaneuvered, outgunned, and applied poorly. The first domestic fighter aircraft, the PkV-16, had insufficient avionics, lackluster armament, and deficient stealth or otherwise survivability; severely limiting its ability to engage the hypersonic aircraft of their foes.
In an attempt to provide a Cossack aircraft capable of going toe-to-toe to the R44, the Department of War commissioned the ItP-XX Program. The aim was to have a near-hypersonic, mesosphere-capable interceptor with efficient fuel economy, full-aspect stealth, supermaneuverability, and a comprehensive countermeasures system; the latter four never came to be, and the demands were ultimately dropped by the Department of War due to budgetary concerns and technological and engineering limitations.
The program made the most progress during the later stages of the South Seas War, stiving to make deployment in the speculatory and largely fictitious Compact counteroffensive into Northern territory after the Second Battle of the Strait, but the war came to a close before production models were finalized. The program had been in a state of stagnation until WURCo. made allocations of funding to meet the orders of a potential buyer, the Imperial Republic of Ashoy.
Serial production for the ItP-1 was limited to two stretches, during which models were produced for use in the FRCP and then for export to Ashoy. The lack of interest into the program ultimately stems from the development of the PkV-21 fighter, which was expected to perform better in a more general air-to-air role, particularly against combatants like Imperial high supersonic aircraft; however, the limited amounts that eventually were produced were merely to supplement the Cossack Air Defense as part of the ADARP (Air Defense Acquisition and Revitalization Program).
A major hindrance to the eventual production of the ItP-1 were technical difficulties involving the Primakov PAT-1210 turbo-scramjet engine, which was consistently unreliable in achieving its desired thrust and speed output, often underwhelming in testing or deemed dangerous to the crew and maintenance. But after co-designer Vikentiy Ilyich had avowedly pulled an impromptu work session in the early morning with the design back on the drawing board, a revision of the engine design allowed for greater airflow to regulate the inconsistencies in the thrust output. The improved prototype was tested by Marina Primakov while Ilyich was temporarily hospitalized.
The design required for every component to take into account the aerodynamic impact it might hold; as well as that, the very skin of the aircraft needed to be able to withstand the temperature brought on by friction.
The ItP-1 is a large, single-engine aircraft with a nose-mounted intake cone and comparatively small wings with a low aspect ratio. During its design phase, numerous features common on other Cossack aircraft were scrapped, either by the reasoning of its defunct use in the fighter's intended operation or by the necessity to make space for more important components. These include the exclusion of any form of gun or autocannon, any environmental controls for the pilot's comfort, and a complete switch from traditional structural aluminum to titanium aluminide alloy, which fulfills the heat resistance and weight requirements needed.
The ItP-1, due to its propulsion and airframe, is not suited for close combat or low-altitude flight.
In comparison with its intended specifications before designing, the ItP-1 lacks many of the theoretical aspects it was intended to tout; for one, it lacks a radar warning receiver, which means that if an interceptor does not have the advantage of surprise, it will not be aware it is under attack. The interceptor also will not include DIRCM, as most of the development of directional IR countermeasures was focused for the PkV-21. The engine is largely the letdown that led to the program's underfunding-- in order to reach the top speed, the turbofan component of the engine needs to constantly use afterburners before the scramjet can activate, which burns a significant amount of fuel before the craft is even up to speed.
The Primakov PAT-1210 is technically classified as a turbo-scramjet because of its combined cycle engine that merges aspects of turbojet engines and air-breathing scramjet engines. In essence, it is a turbojet mounted within a larger scramjet engine. The PAT-1210 is able to run in 'turbojet' mode at takeoff, and after reaching a minimum speed of Mach 3.5, can switch to a scramjet to further accelerate and maintain its speed. The engine can produce a thrust of up to 382.4 kN with an afterburner, which helps to accelerate it to high supersonic speeds at high altitude. The scramjet can propel the ItP-1 to a maximum speed of Mach 5.3.
Located in the nose inlet of the interceptor, the ItP-1 hosts the REF-745 Active Electronically Scanned Array, which allows the ItP-1 to detect and track aerial targets of 1 m2 at ranges of up to 310-330 kilometers away and can track targets at ranges of even 500 kilometers if narrower bands are used.
Although the ItP-1 lacks many of the other sensors of the PkV-21, the ItP-1 does include a secure digital datalink for rapid communication of threats and commands between the interceptor and ground control stations or AEW&C.
The main armament of the ItP-1 is the specially made long-range air-to-air missile, the Dyskusiya HRPPDD-67. The ItP-1 has four wing-mounted exterior pylons for munitions, and an interior weapons bay typically equipped with two HRPPDD-67 missiles.
The Dyskusiya HRPPDD-67 is an air-to-air missile developed by the Lake Ostap Weapons Facility, a division of WURCo. A multistage missile, the munition uses solid fuel booster stages to reach ranges of nearly 400 kilometers away at Mach 4.6. The guidance of the missile relies initially on inertial guidance with a midcourse update (via data link with launch aircraft) and during its terminal phase can lock onto a target from up to 40 kilometers away using active radar homing. The missile has a ceiling of 30,000 meters and a 50-kilogram high-explosive/fragmentation warhead.
The "Zorya" is a medium-range or beyond-visual-range missile, which can be launched before lock-on and directed to the target via a secure data-link with the launch aircraft and the missile's inertial navigation system. Terminal guidance is active radar homing, and the detonation mechanism is a radio proximity fuse that deploys its 15-kilogram high-explosive pre-fragmented warhead. A notable feature of the RPPSD-13 is its high kinematic performance, mainly due to its throttleable ramjet design that also lets it reach a significantly high speed, approaching Mach 4.8. The operational range of the "Zorya" is in excess of 110 kilometers, with a No-Escape Zone reaching up to 70 kilometers. The "Zorya" RPPSD-13 is designed to operate in environments of high electronic interference and is equipped with electronic counter-countermeasures to resist jamming, including a Home-on-Jam capability. A notable variant of the "Zorya" is the RPPSD-14, with an extremely extended range, slower speed, and lower warhead weight. This variant has similar guidance systems, but is designed as an "AWACS killer" and hit airborne targets at distances of 240 kilometers. The ItP-1 uses both variants for various engagements.
Due to the high service ceiling of the ItP-1, the Department of War saw fit to experiment with anti-satellite weaponry-- this led to the development of the Vzuttya BV-1043 anti-satellite weapon. An air-launched weapon, only two of the heavy missile can be carried at a time. To be deployed, the craft needs to enter into a supersonic zoom climb, which the ItP-1 is more than capable of doing, and directed into the target area via a cue from the pilot's head-mounted display (which in turn calculates the rotation of the Earth, the trajectory of the target, etc.). The missile uses a multistage design, with both stages being solid-fueled two-pulse rocket engines. The maximum speed the missile can achieve in constant acceleration before running out of fuel is Mach 11, though the weakening of atmospheric effects from high altitude is largely to credit for that speed. To track and engage targets, the missile relies on a high-resolution imaging infrared seeker, whose effectiveness is compounded in orbit. The missile has a range of 680 kilometers and a flight ceiling of 600 kilometers. It uses its own kinetic force to destroy targets.