Patent
Propulsion system for a vertical and short takeoff and landing aircraft
Paul M. Bevilaqua,Paul Shumpert +1 more
TLDR
In this article, a propulsion system for a V/STOL type aircraft is described, which comprises a turbofan engine including a fan section (46), compressor section (65), combustion section (74), turbine section (58), and nozzle section (34).Abstract:
The invention is a propulsion system for a V/STOL type aircraft. In detail, the invention comprises a turbofan engine (31) including a fan section (46), compressor section (65), combustion section (74), turbine section (58) and nozzle section (34). The turbine section (58) comprises a low-pressure turbine portion (56) coupled to and driving the fan section (46) and a high-pressure turbine portion (68) coupled to and driving the compressor section (65). A lift fan (36) is coupled to the fan section (46) by means of a drive shaft (52). A clutch (108) is incorporated for de-coupling the lift fan (36) from the fan section (46). A mechanism (80) is incorporated for extracting additional power from the low-pressure turbine portion (56) of the turbine section (58) to drive the lift fan (36) that augments the basic engine thrust for V/STOL operation.read more
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Patent
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References
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Patent
Modulating bypass variable cycle turbofan engine
TL;DR: In this article, a turbofan engine is provided with a core engine, a first fan and a second fan, and means are provided for varying the proportion of the flow of air among the fan ducts and core engine.
Patent
Convertible aircraft engine
TL;DR: In this paper, a convertible aircraft engine with turboshaft and/or turbofan modes of operation is provided in a configuration that combines certain components to permit variation in bypass flow to match engine airflows with the mode of engine operation.
Patent
Auxiliary lift propulsion system with oversized front fan
TL;DR: In this article, a propulsion system for use primarily in V/STOL aircraft is provided with a variable cycle, double bypass gas turbofan engine and a remote augmenter to produce auxiliary lift.
Patent
Tandem fan series flow VSTOL propulsion system
TL;DR: A propulsion system for vertical take off and landing aircraft includes a forward compressor fan (40) and an aft compressor fan(42) downstream of the forward fan and in series flow communication with the forward Fan as mentioned in this paper.