9/24/2023 0 Comments Flightgear manualMach-dependent pitching moment caused by speedbrake opening.suction effects on the orbiter aft fuselage caused by elevon deflection at high Mach numbers.realistic cross-couplings between the pitch, yaw and roll control channel.full accounting of the non-linearity of the pitch response to elevon deflection at high Mach numbers.double or triple differential dependence (Mach number, AoA and elevon deflection) for the major coefficients (e.g.full Mach number dependence of all relevant force and moment coefficients.All aerodynamics used is based on NASA technical documents in public domain - for the nominal regime, in-flight data has been used, for off-nominal situations wind tunnel results both for the mated launch vehicle and the orbiter alone have been utilized.Ītlantis on approach into Edwards Airforce Base (KEDW).ĭuring entry, the Shuttle drags a bright plasma trail.įeatures of the aerodynamical modeling include: For a similar reason, the response of the craft to elevon deflections is non-linear and asymetric at high Mach numbers and high AoA and gradually becomes symmetric only at lower airspeeds.Īerodynamics is where Flightgear and JSBSim excel - the platform offers the possibility to incorporate a huge amount of available data into the simulation. Yaw stability in this regime is then purely managed by the flight control systems. While the craft is yaw-stable at subsonic speeds, at supersonic and hypersonic speeds the high AoA places the vertical stabilizer essentially outside the airstream, making the craft dynamically unstable in the yaw axis. The entry into the atmosphere is flown at a high AoA of 40 degrees, creating a detached shockwave of hot plasma which limits the direct heat transfer to the fuselage, while at lower Mach numbers the AoA is gradually reduced, leading to a more aircraft-like behavior. Through this range, the aerodynamical properties change drastically. Spanning the full range of a rarified atmosphere rushing by at Mach 27 to the dense low atmosphere through which the Shuttle glides at subsonic speeds on final approach, the orbiter probes a huge variety of conditions. The official Flight Manual (Standard Edition) is available from the bookstore, a Deluxe Edition with more information is in preparation! Last stable version Possibly unstable development version The main platform for the aerodynamical, orbital motion and systems simulation is JSBSim, a sophisticated Open Source multi-platform flight dynamics engine which is also used in research and professional applications. It is by now one of the most advanced simulations in Flightgear and likely one of the most realistic representations of the Space Shuttle available. The Space Shuttle model for Flightgear, first released together with version 3.6, aims to re-create this experience by a detailed modeling of all aspects of the spacecraft's operations, ranging from sophisticated aerodynamical modeling to a comprehensive simulation of the Shuttle's systems and the effect of their failures. The mixture of a rocket-like launch, a spacecraft-like near ballistic early atmospheric phase and an airplane like approach and landing makes the Space Shuttle a truly unique flying experience. It was operated from 1981 to 2011 on a total of 135 missions during which two orbiters, Challenger and Columbia, were lost in accidents. The NASA Space Shuttle was the world's first operational space plane capable of reaching orbit. Science and Fiction - Simulated Spaceflight The Space Shuttle
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