Preliminary Design of a Hybrid Propulsion Multimission Missile System

1997 ◽  
Vol 34 (2) ◽  
pp. 186-191 ◽  
Author(s):  
J. D. Sims ◽  
R. A. Frederick
Keyword(s):  
Preliminary Design ◽  
Hybrid Propulsion ◽  
Missile System

scholarly journals A Design Study of a Fan Augmented Ramjet

1975 ◽  
Author(s):  
E. W. Beans
Keyword(s):  
Hybrid System ◽  
Pressure Ratio ◽  
Low Pressure ◽  
Preliminary Design ◽  
Design Study ◽  
Hybrid Propulsion ◽  
Scaling Relationships ◽  
Percent Improvement ◽  
Subsonic Regime ◽  
Performance Estimates

The characteristics of a hybrid propulsion system, which fills the gap between turbojets and ramjets, are presented. The hybrid system is a fan augmented ramjet and consists of a ramburner fed by an externally driven low pressure ratio fan. Cycle analyses, performance estimates and, scaling relationships for subsonic and supersonic operation, and a preliminary design of a subsonic version are presented. A 50 to 100 percent improvement in cruise performance above that of a ramjet can be expected in the subsonic regime.

scholarly journals POSSIBLE HYBRID PROPULSION CONFIGURATION FOR TRANSPORT JET AIRCRAFT

Aviation ◽  
2016 ◽  
Vol 20 (3) ◽  
pp. 145-154 ◽  
Author(s):  
Sergio CHIESA ◽  
Marco FIORITI ◽  
Roberta FUSARO
Keyword(s):  
Electric Motor ◽  
High Speed ◽  
Internal Combustion Engines ◽  
Preliminary Design ◽  
Combustion Engines ◽  
Jet Engines ◽  
Electric Motors ◽  
Hybrid Propulsion ◽  
Air Turbine ◽  
Innovative Solution

This research is aimed at studying the possible advantages of installing, for a hybrid propulsion aircraft, electric motors and related propellers into the dedicated supplementary nacelles. This innovative solution is different from the configuration, already studied for a regional turboprop (Chiesa et al.2013), in which the electric motors are in the same nacelles of the internal combustion engines. As it has been expected, it offers the advantages of avoiding mechanical links between the two units and, more importantly, can also be applied to jet aircraft. In fact, the main contribution of electric motors is expected during ground operations, take-off and descent phases (i.e. at low speed), in which it can be useful to integrate the propellers or even substitute the jet engines with them. At high speed, the propellers, of course, are configured in order to reduce drag. When considering the design of a new airliner concept, a preliminary design study is necessary to optimize the location of the supplementary nacelles. The nacelles, which only hold the electrical motor, can also be considered retractable, as is usual for a RAT (Ram Air Turbine). Please note that in the hybrid propulsion context, the RAT function can be clearly allocated to the electric motor, with the advantages of optimizing drag at high speed, taking into account installation problems.

scholarly journals Delivering engine demonstrators for competitive evolutions of the european launchers

2019 ◽  
Author(s):  
J.-N. Caruana ◽  
M. De Rosa ◽  
T. Kachler ◽  
W. Schoroth ◽  
K. Underhill
Keyword(s):  
Preliminary Design ◽  
Fire Tests ◽  
Fire Testing ◽  
Pressure Oscillations ◽  
Design Review ◽  
Hybrid Propulsion ◽  
Thrust Chamber ◽  
The Future

The year 2014 was one of achievements for the propulsion projects of the Future Launchers Preparatory Programme (FLPP). Highly relevant results were produced by hot-fire testing of three different engine demonstrators — a solid propulsion demonstrator focusing on pressure oscillations, a 5-kilonewton storable bipropellant engine, and a 25-kilonewton hybrid propulsion demonstrator. These concrete achievements were accompanied by the fast progress of a 115-kilonewton cryogenic expandercycle thrust chamber demonstrator which reached Preliminary Design Review (PDR) by end 2014, with hot-fire tests scheduled in 2017. These achievements give a solid grounding to the continuation and expansion of engine demonstrator projects at ESA Launchers.

The Minnesota inverted-tee system: Parametric studies for preliminary design

PCI Journal ◽  
2012 ◽  
Vol 57 (2) ◽  
pp. 162-179
Author(s):  
Roberto Piccinin ◽  
Arturo E. Schultz
Keyword(s):  
Preliminary Design ◽  
Parametric Studies

Naval Hybrid Power Take-Off and Power Take-In – Lessons Learnt and Future Advances

2018 ◽  
Author(s):  
M Benatmane ◽  
B Salter
Keyword(s):  
Electrical Power ◽  
Maritime Industry ◽  
Propulsion Systems ◽  
Systems Architecture ◽  
Hybrid Propulsion ◽  
Leading Role ◽  
Lessons Learnt ◽  
Marine Industry ◽  
Operational Systems ◽  
Great Pressure

With the ever tightening of budgets and legislation, new vessel builds are facing tough times.  The future maritime industry requires more efficient vessels to minimise ship operational costs with cleaner technologies that meet stringent environment regulations, reduce greenhouse gas emissions, specifically carbon emissions. Emissions reduction continues to be high on the agenda for the marine industry, it is responsible for about 2.5 percent of global greenhouse emissions1 and is under great pressure to reduce its environmental impact. With pressure comes the opportunity to incentivize innovation, developments and implementation of energy efficient measures, both design and operational. Naval propulsion systems are no different from other industries, and the industry is exploring ways to optimise propulsion and electrical power generation systems architecture for better performance and efficiency. Electric technology plays a leading role. The paper will: Provide a brief overview about the hybrid propulsion concept, with key electrical, mechanical qualities and issues. Describe different designs configurations and performances of hybrid propulsion systems from demonstrated and operational systems in the commercial and naval world. Cover the lessons learnt in technologies and controls used on such systems. Examine future architectures including energy storage and explore the benefits and the flexibility these can bringto the hybrid propulsion sphere.

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