Mission equipment for the plane's aerial reconnaissance role included signals intelligence sensors, side looking airborne radar, and a camera. NASA was the final operator of the Blackbird, using it as a research platform it was retired again in 1999. In 1989, the USAF retired the SR-71, largely for political reasons several were briefly reactivated during the 1990s before their second retirement in 1998. The SR-71's existence was revealed to the public in July 1964 it entered service in the United States Air Force (USAF) in January 1966. The SR-71 was longer and heavier than the A-12, allowing it to hold more fuel as well as a two-seat cockpit. Initially, a bomber variant of the A-12 was requested by Curtis LeMay, before the program was focused solely on reconnaissance. The shape of the SR-71 was based on that of the Lockheed A-12, which was one of the first aircraft to be designed with a reduced radar cross-section. American aerospace engineer Clarence "Kelly" Johnson was responsible for many of the aircraft's innovative concepts. The SR-71 was developed as a black project from the Lockheed A-12 reconnaissance aircraft during the 1960s by Lockheed's Skunk Works division. The SR-71 has several nicknames, including " Blackbird" and " Habu". Start the electric system ( }), start the engines ( s), watch the engines spin up to 15% N1, then turn off the cutoff ( ) and open the canopy ( d).The Lockheed SR-71 " Blackbird" is a long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed and manufactured by the American aerospace company Lockheed Corporation. It also can't hurt to have some background knowledge about supersonic high-altitude flight - Understanding Supersonic Flight and Understanding airspeed measures provide some useful background to understand why the plane must be operated the way it is. This is asking for really good weather in reality, and definitely not viable in the simulation - so the ANS is the only real option. Note that navigating by sight like following a coastline is quite impossible from 80.000 ft - it takes about 30.000 m visibility to see the ground directly beneath the aircraft, and at least 10 times this much to see anything from the cockpit. With full tanks, the Blackbird should have a range of 2900 nm, so 2/3 of normal fuel should be ample. For better performance, reduce the fuel level accordingly. For a first flight, a distance to destination of about 1500 nm is suitable, the flight time is then about 1 hour with sufficient time to climb up to cruising altitude and spend some 15-20 minutes cruising. The real SR-71 has an Astro-Inertial Navigation System (ANS) which is capable of navigating a preset series of waypoints just as the route manager. Select a destination and enter it into the route manager. Here is an abbreviated version geared to what is available and possible in Flightgear. There is an actual Flight Manual available online if you want to know the full operating procedures of the aircraft - not all operations are supported by the model though. If you want to use it again you have to reload ( j). The braking chute will be released/untied if: Brake chute doors are opened ( Ctrl-b).The braking chute will be automatically deployed if: A SR-71 refueling behind a KC-135 tanker Braking chute
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