Chaplin developed a nonlinear approach to the ducted propeller problem and subsequently Ryan and Glover (1972) presented a theoretical design method, which avoided the use of a linearized theory for the duct by
Turboprop engines are classified depending on the turbine driving the propeller. In the first class, the propeller is driven by a turbine which also provides power to the air compressor. In another class of the turboprop engine, an additional turbine, named the power turbine (free turbine) runs...
sound_level_meter: contains scripts to obtain sound pressure levels using different frequency weightings (A, B, C, D or Z) and time weightings (fast, slow, or impulse) (see folder). utilities: contains some scripts that are complementary to any of the toolbox functions (see folder). exa...
Such a model has been developed, which is suitable for unsteady simulations of the propulsion and the heat management system performance of a short-range four-seater aircraft. A parameter study of the design parameters has been performed to display their impact on the system mass, the overall ...
Both theStandard DPD single-thrusterand DPD-XT dual thruster utilize Tecnadyne “high-efficiency, lightweight brushless thrusters with a ducted KORT Nozzle propeller”, except the DPD-XT obviously employs two th...
A brushless DC motor is integrated with an aeropropulsive thrust generator that is hubless, not in tandem (co/counter) rotating propeller disks, and not having magnetic bearings.
This concept consists of a submerged electric motor contained in a streamlined casing, set in a normal rudder with a ducted propeller at the aft end, Brix (1993). Large rudder angles may be employed. The unit also offers some auxiliary propulsion. There tends to be little detrimental effect ...
Propeller characteristics, BAR = 0.65 In most design problems, the speed of advance and the power PD to be absorbed are known. In addition, the propeller r.p.m. are also often fixed by considerations of gear ratios and vibration. Diagrams such as that in Fig. 11.5 can be used to ...
The technique includes a parachute deployment system (PDS) that can deploy a parachute installed in a drone and land the drone safely. The parachute may be deployed automatically, e.g., in response to a variety of failures such as a free fall, or manually from a base unit operated by a...
An aircraft defining a longitudinal direction and a lateral direction is provided. The aircraft includes a fuselage; an engine mounted at a location spaced from the fuselage of the