#F 22 lightning 3 drawing manual
#F 22 lightning 3 drawing full

The APU accumulator was fed from the primary hydraulic system, but could also be pumped up manually (with much effort) from the cockpit. The APU itself was started from a hydraulic accumulator by pulling a handle in the cockpit.

#F 22 lightning 3 drawing full

A newer, more powerful APU could provide full electrical service to the aircraft. The aircraft's original APU could provide only minimal electric power and pressurized air for both aircraft cooling and for the engines' pneumatic starters. Unlike many tactical jets which required ground service equipment, the S-3 was equipped with an auxiliary power unit (APU) and capable of unassisted starts.

#F 22 lightning 3 drawing manual

In the event of dual hydraulic failures, an Emergency Flight Control System (EFCS) permits manual control with greatly increased stick forces and reduced control authority.

All control surfaces are actuated by dual hydraulically boosted irreversible systems. Spoilers are fitted to both the upper and the lower surfaces of the wings. The wing is fitted with leading edge and Fowler flaps. In tanker crew configuration, the S-3B typically flew with a pilot and co-pilot/COTAC.

When the aircraft's anti-submarine warfare (ASW) role ended in the late 1990s, the enlisted SENSOs were removed from the crew.

Entry is via a hatch/ladder folding down out of the lower starboard side of the fuselage behind the cockpit, in between the rear and front seats on the starboard side. The aircraft can seat 4 crew members (3 officers and 1 enlisted) with pilot and copilot/tactical coordinator (COTAC) in the front of the cockpit and the tactical coordinator (TACCO) and sensor operator (SENSO) in the back. Its 2 GE TF-34 high-bypass turbofan engines mounted in nacelles under the wings provide excellent fuel efficiency, giving the Viking the required long range and endurance, while maintaining docile engine-out characteristics. The S-3 is a conventional monoplane with a cantilever shoulder wing, very slightly swept with a leading edge angle of 15В° and an almost straight trailing edge. The majority of the surviving S-3As were later upgraded to the S-3B variant, with 16 aircraft converted into ES-3A Shadow electronic intelligence (ELINT) collection aircraft. During the production run from 1974 to 1978, a total of 186 S-3As were built. The first prototype was flown on 21 January 1972 by military test pilot John Christiansen, and the S-3 entered service in 1974. On 4 August 1969, Lockheed's design was selected as the winner of the contest and 8 prototypes, designated YS-3A were ordered. Sperry Univac Federal Systems was assigned the task of developing the aircraft's onboard computers which integrated input from sensors and sonobuoys. Lockheed recognised that it had little experience in designing carrier based aircraft, so Ling-Temco-Vought (LTV) was brought into the team, being responsible for the folding wings and tail, the engine nacelles, and the landing gear, which was derived from LTV A-7 Corsair II (nose) and Vought F-8 Crusader (main). In August 1968, a team led by Lockheed and a Convair/ Grumman team were asked to further develop their proposals to meet this requirement. In the mid-1960s, the USN developed the VSX (Heavier-than-air, Anti-submarine, Experimental) requirement for a replacement for the piston-engined Grumman S-2 Tracker as an anti-submarine aircraft to fly off aircraft carriers. Several aircraft were flown by Air Test and Evaluation Squadron Thirty ( VX-30) at Naval Base Ventura County / NAS Point Mugu, California, for range clearance and surveillance operations on the NAVAIR Point Mugu Range until 2016 and one S-3 was operated by the National Aeronautics and Space Administration ( NASA) at the NASA Glenn Research Center until 2021. The S-3 was phased out from front-line fleet service aboard aircraft carriers in January 2009, with its missions taken over by aircraft like the P-3C Orion, P-8 Poseidon, Sikorsky SH-60 Seahawk, and Boeing F/A-18E/F Super Hornet. Because of its characteristic sound, it was nicknamed the 'War Hoover' after the vacuum cleaner brand. A carrier-based, subsonic, all-weather, long-range, multi-mission aircraft, it carried automated weapon systems and was capable of extended missions with in-flight refueling. The Viking also provided electronic warfare and surface surveillance capabilities to a carrier battle group. In the late 1990s, the S-3B's mission focus shifted to surface warfare and aerial refueling. Navy (USN) primarily for anti-submarine warfare. The Lockheed S-3 Viking is a 4-crew, twin-engine turbofan-powered jet aircraft that was used by the U.S. Carrier-based anti-submarine and aerial refueling aircraftДЄn S-3A Viking from ASW squadron VS-37 Sawbucks