A flight simulator instrument trainer has operational controls and instruments similar to a conventional aircraft. An AC driven position simulator moves a simulated station position according to simulated power, attitude, flap condition direction and distance traveled to control simulated ADF, ILS and VOR instruments. Angularly offset phases are generated and are provided to potentiometers on directional instruments. Wipers on the potentiometers move with simulated direction indicators. Signals from the wipers are fed to other devices, and phases are compared with one of two ninety degree offset reference phases. The latter are shifted according to simulated flight characteristics, and the thus-varied output of the phase comparators are used to drive instruments and to shift angle position accumulators and distance position accumulators. Logic arrays control initiating signals which prevent attitude and altitude instrument changes until flight conditions are reached and indicate stalls and prevent stall indications during touchdown. An astable vibrator applies minor amplitude perturbations to motor drives for simulated altimeters and directional and attitude instruments. A stable vibrator provides selectively and cyclically variable counts which are converted to analog turbulence signals. The vibrator and a counter also provide signals to an up-down counter for a flap position indicator. Throttle setting controls an engine power signal and a count down counter to produce fuel consumption indications and engine sound. The counter is reset by a simulated fuel tank change switch.
An inflight IFR procedures simulator for generating signals and commands to conventional instruments provided in an airplane. The simulator includes a signal synthesizer which generates predetermined simulated signals corresponding to signals normally received from remote sources upon being activated. A computer is connected to the signal synthesizer and causes the signal synthesizer to produce simulated signals responsive to programs fed into the computer. A switching network is connected to the signal synthesizer, the antenna of the aircraft, and navigational instruments and communication devices for selectively connecting instruments and devices to the synthesizer and disconnecting the antenna from the navigational instruments and communication device. Pressure transducers are connected to the altimeter and speed indicator for supplying electrical signals to the computer indicating the altitude and speed of the aircraft. A compass is connected for supply electrical signals for the computer indicating the heading of the airplane. The computer upon receiving signals from the pressure transducer and compass, computes the signals that are fed to the signal synthesizer which, in turn, generates simulated navigational signals.
A simulator structure with a deck for mounting various components including controls, one or two seats, an instrument panel and an image projector. The components are mounted to the deck using suitable fasteners, such as bolts and nuts. The image projector displays a computer-generated simulated environment. The instrument panel can include actual instruments or a computer-generated image. A dome-shaped image screen can be attached to the structure that can be tiltable on a horizontal axis or, alternatively, can be movable along an arcuate support.
