Orthographic Projection of the Rockowin P/S-9J.
Following their defeat at the hands of the Allied Continental Forces following the end of the Davnian Continental war in 1948, Redwood would be subject to heavy international sanctions, including the disestablishment of the former imperial government, and the curtailment of its military and industrial power. The Rockowin Aircraft company, who provided many combat aircraft during the continental war, would be heavily stripped. Under these restrictions, virtually no new designs came out of the country for the 17 years following the end of the war, and the company was reduced reproducing many foreign designs that would become key to Redwood's air defense between the 50's and 60's. Following their entry into the Rexington Pact in 1961, many of those aforementioned restrictions were lifted under dubious conditions, however outcry from other nations would not prevent the firm from designing aircraft to get themselves back into the defense industry.
In 1967, Rockowin would create propose the Rockowin Model 227, a supersonic aircraft designed to fill a ground attack and fighter role for the Redwood Air Corps, replacing the outdated airframes of the time. The first craft of the type, RK22701, flew in late 1969, and the program earned the moniker Bison, and the designation P/S-9 (Pursuit/Strike-9). Following a somewhat troubled development, including the crashes of aircraft RK22701 and RK22705, the P/S-9 was finally accepted for service in 1975 in the Redwood Air Corps and the Fleet Air Arm of Redwoods Naval Service as a Land Based Combat Aircraft.
The Rockowin P/S-9 is a twin engine, two seater multirole aircraft, and the first combat aircraft produced by Redwood since the end of the Davnian Continental War. The aircraft is powered by 2 Torian F1-30 Afterburning Turbofans, the designs of which were supplied from The Nord, propelling the aircraft to Mach 2.1. An odd quirk of the A model Bison would be it's 2nd seat canopy (carried over from the prototype), which would be primarily made out of metal and have small glass windows for the Weapons System Officer to look out of. Because of this both the Prototypes and the Production models would be nicknamed 'The Hearse' due to their claustrophobic interiors. This would be fixed in later variants. Due to the lack of industrial knowhow at the time, many of the aircraft systems in its introduction were made with parts sourced from older fighter designs in still in service at the time, some of which contributed to the crashes of the 2 prototype aircraft, or with equipment purchased from ally nations, primarily Andalowë and their aviation firm Abt Aerospace. Some of these included the fly-by-wire system, the pulse doppler radar, and many of the avionics systems. In later variants these would be replaced with natively developed systems.
Export
Following the introduction of Redwood into the Rexington Pact, and the dissolving of several sanction against them, it was soon possible for them to export any combat aircraft they would have produced. The early proposal for Redwoods first native fighter post-war (considered as early as 1952) was to keep the aircraft for domestic use only, however as the restrictions were now lifted, it was now possible for the aircraft and it's production license to be sold to other nations. For their part in assisting the development of the aircraft, the multinational Vantel firm (of which part is owned by Andalowës own Abt Aerospace) would be awarded the license to produce the aircraft for Rexington Pact and unaligned nations under the name Vantel Bison from 1983. Soon, Vantel would begin producing their own modifications to the aircraft, and selling them on the international export market.
Variants
P/S-9A Variant: Initial Production Variant introduced in 1975.
P/S-9B Variant: As part of the upgrade program Bison '83, most Bison A models would be upgraded to Bison B specification. This included upgraded avionics, two new hardpoints on the base of the intake either side of the craft, and Uprated Torian F1-35 engines, as well as a less claustrophobic canopy for the Weapons System Officer. Introduced 1983.
P/S-9I Variant: I for intercept. Also as part of Bison '83, this would be a modification of Bison B specification aircraft. This modification included a new radar system for long range interception, as well an Infrared Search and Track Module. This modification also removed several systems related to ground strike, as to reduce weight and increase performance. Introduced 1983.
P/S-9J Variant: The final production variant for Redwood, this variant would again replace the Weapon System Officers canopy for a far clearer one, as well as new Torian F8-10 engines for an increased thrust of 80 kN (17,900 lbf) dry, 131 kN (29,400 lbf) wet, as well as a complete systems overhaul, including glass cockpits, and a AESA radar system. Introduced in 1991.
P/S-9K Variant: A single seat P/S-9J that started as a proposal for the next variant of P/S-9 to be operated by Redwood but was cancelled after the first prototype was produced. The prototype would be extensively modified for testing of the Vantel 25, as well as an unknown collaboration project between the Redwood Naval Service and the Ametian Air Force. Built in 1996, Retrofitted in 2010, still active as of December 2024.
Foreign variants Side Note: Rockowin would continue to note down foreign variants as their own, as shown in brackets.
Vantel Bison MkI (Rockowin P/S-9B): Initial purchase and production of Rockowin Bison B Variant, Introduced to Royal Andalowë Air Force in 1985
Vantel Bison MkII (Rockowin P/S-9C): Vantel's modification based on Bison B/ MkI. Equipped with 26mm Revolver Cannon, Replaces Torian Engines with Gallavantis GV38-03R Thrust Reversing Afterburning Turbofans, replaces Rockowin based systems with Abt Aerospace based systems, new Radar. Introduced to Royal Andalowë Air Forces in 1989.
Vantel Bison MkIII (Rockowin P/S-9D): Based on MkII, Deletes Weapon System Officer, replaces space with mission related systems and/or fuel (depends on requirements), complete avionics overhaul, glass cockpit. Introduced in 2000 to all purchasing air forces.
Vantel Bison MkIV (Rockowin P/S-9F): MkIII with non thrust reversing Gallavantis GV28-08S engines. Also introduced in 2000
Vantel Bison MkV (Rockowin P/S-9G): Final major production variant. Upgraded MkIII, new frameless canopy, software updates, uprated GV38-13R engines. Introduced 2007.
Vantel Bison MkVI (Rockowin P/S-9H): MkV with non thrust reversing Gallavantis GV28-18S engines. Also introduced in 2007.
Redwood, the original designer and customer nation, would serve these aircraft well into the 2020s. The service life of this aircraft would exceed 50 years, and oultive many of the fighter designs fielded by the Rexington Pact since the 70s. Andalowë, the primary customer of Vantel Bisons, would operate these aircraft until 2025, where they would be retired and replaced by the Vantel 25 stealth aircraft, and many Rexington Pact nations would follow suit around the same time. By 2030, several export nations still operate the Bison, and would celebrate it's 60th anniversary.
Specifications, J Variant
Crew: 2 (Pilot, Weapons System Officer)
Length: 21.18m
Wingspan: 15m
Height (Gear Down): 5.48m
Performance
Engines: 2x Torian F1-30 Afterburning Turbofans
Max Thrust: 72 kN (16,200 lbf) dry, 125 kN (28,100 lbf) wet
Maximum Speed: Mach 2.1 at altitude
Service Ceiling: 20,000m
Armament
Gun: Gun, Rotary, 20mm, 1963 with 1010 rounds
Air to Air Missiles
Dogfight Series DF-1 (1975-1999), and DF-3 (1999-2027) IR missiles
VABVRM (Vantel Advanced Beyond Visual Range Missile, acronym Pronounced Vabvirm) (1975-2027)
Air to Ground Ordinance
Universal Ordinance Series (UOS) unguided bombs, 250kg, 500kg, 1000kg
Guided Ordinance Series (GOS) guided bombs (1999-2027), 250kg, 500kg, 1000kg
Mustang Dynamics MD ATGM26 Air to Surface Missile
Mustang Dynamics Anti-Radiation Missile (MDARM)
Targeting and Navigation Pod 10 (TaN-10)
O-338 Data Link Pod
Laser Designator Spotter Pod (Off side of forward fuselage, Bison A and B only)
Also carries assorted fuel tanks and cargo pods.