Unique features built into every TDI turbojet engine deliver peak efficiency and unparalleled value.
Mil-Spec Performance TDI turbojets are designed for military applications. Typical mission operating environment is in the 20,000-30,000 ft altitude at flight speeds between Mach 0.3 to Mach 0.8. The robust structure of the engine makes survival in harsh environments (such as the wing of a supersonic aircraft or high altitude UAV’s) possible. Shock and vibrations and extreme temperature exposure (hot and cold) are normal operating conditions for TDI engines.
State-of-the-Art Turbomachinery TDI engines maintain a simple design configuration utilizing a single-stage radial compressor, annular combustor, and mixed flow turbine. Although simple, state-of-the-art turbomachinery components are custom designed to provide component output and efficiency levels at the cutting-edge of technology, driving down fuel consumption while increasing output.
Low Cost/Compact Configuration TDI engines are designed for expendable vehicle applications. In this environment, low cost, small size, and ease of installation are critical parameters for these new expendable, and swarming vehicle applications.
No Lubricating Oil Required The metered fuel is directed into the rear of the engines for cooling internal components and lubricating the bearings. The precision fuel transport system has the secondary benefit of pre-warming fuel prior to entering the combustion chamber. Since no lubricating oil is required, additional capacity exists for fuel, resulting in increased vehicle range.
Easy Starting The rotating components for TDI engines are a low inertia design for ease of engine cranking. The engines then provide assistance in cranking by igniting the combustor early in the starting sequence. This unique feature allows TDI engines to be “windmill” started throughout the flight envelope. Cranking cartridges may also be utilized if sufficient ram-ratio across the engine is not available (such as ground launch applications).
Integral Electric Generator A Permanent Magnet Generator (PMG) is directly mounted to the engine shaft providing electrical power to the vehicle. This electricity is utilized to power all onboard vehicle functions (controls, payload requirements, etc.).
Multi-Fuel Capability The continuous combustion system of TDI engines permit the use of a wide variety of low and high volatility fuels. TDI engines have the unique feature of providing pre-warmed fuel to a rotary atomizer which provides ultra-fine fuel droplets for easy starting, rapid burning, and complete combustion.
Cool Exterior The exteriors of TDI engines are cooled by air routed through the engine isolating external components from high temperature exposure. Therefore, conventional, low cost materials are utilized for these external components, with the additional benefit of reduced radiating heat signature.
Full Authority Engine Control Law The engine control law performs engine management functions such as starting, accelerating, steady state governing, self testing, and shut-down operations. The control system also interfaces with air data sensors to compensate for changes in air density and ram ratio across the engine. This control logic is typically incorporated directly into the vehicle flight computer, however a standalone control box is also available.