asteroza + gtf   4

Hybrid geared-fan and piston concept could slash fuel-burn
Like old combined cycle aviation diesel designs, this appears to be either a diamond D-16, or perhaps even a deltic triangular configuration. Difference is LP turbine drives geared turbofan, while pistons drive HP compressor with no HP turbine. Makes for a supercharged diesel turboprop of sorts.
general  aviation  propulsion  combined  cycle  diesel  engine  geared  turbofan  GTF  turboprop  supercharger  turbocharger 
may 2018 by asteroza
PK_Klima_18-07-2007_Martens_en.pdf (application/pdf Object)
Interesting shrouded propfan research, basically stuffing counterrotating geared turbofans/propfans inside a duct/shroud, and using a recuperator in the jet exhaust to recovery energy.
MTU  germany  IRA  propfan  integrated  recuperator  recuperative  aeroengine  counterrotating  GTF  geared  turbofan  shrouded  gas  turbine  engine  propulsion  aviation  technology  research  development  CLAIRE  CRISP  Delicious 
august 2012 by asteroza

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