SWB's Current Product Line
SWB-11 Mamba Turbojet
SWB Turbines would like for you to experience their newest turbojet engine developed and tailored specifically to turbine aero modelers...the Mamba. Measuring a mere 3.5 inches in diameter, this engine produces 11 pounds of screaming thrust and weighs just over 1½ pounds!!! Originally designed to produce 14 pounds of thrust, the Mamba was derated to 11 pounds to achieve its low fuel consumption, high reliability, and long life. The Mamba was designed to perfectly suit smaller 60-size ducted fan aircraft. The Mamba turbojets come ready to fly, ready to install in your model jet.
| Diameter | 3.5" | Fuel consumption | 6.76 oz/min (100%) | |
| Length | 7.25" | 4.73 oz/min (80%) | ||
| Weight | 1.9 lbs. | EGT | 1202F (650C) | |
| Thrust | 11.4 lbs | RPM | 60,000-150,000 | |
| Mass Flow | .325 pps | Pressure Ratio | 2.8:1 |
SWB-25
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The SWB-25 is an aerospace grade micro-turbine which was designed to meet the need for a powerful engine required for smaller size applications. Unlike other small aero-model turbines, this engine is specifically designed for professional UAV applications. It is longer lasting, has superior bearings, and a much lower fuel consumption. Originally designed for 30 pounds of thrust, the turbine has been de-rated to 25 pounds of thrust for extended service life. The original SWB-25 prototype was used repeatedly in the development of our electronic turbine control system. With over 3,000 runs on this turbine, the engine continues to run flawlessly. The SWB-25 comes complete with electronic engine control package and starting equipment.
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Specifications |
SWB-25 |
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Diameter (inches) |
4.5 |
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Length (inches) |
10.625 |
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Weight |
3.7 |
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Compressor |
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Air Flow (lb/s) |
0.47 |
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Pressure Ratio (ts) |
2.72 |
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Efficiency (t-s%) |
71 |
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Combustor |
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Pressure Drop (s-t%) |
6 |
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Loading (BTU/h/ft3/atm) |
14.3E6 |
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Efficiency (%) |
97 |
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Turbine |
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Inlet Temp. (degrees F) |
1500 |
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Pressure Ratio (t-t) |
1.7 |
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Efficiency (t-t%) |
75 |
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Turbine Nozzle |
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Exhaust Gas Temp. |
1284 |
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Nozzle Pressure Ratio (t-s) |
1.38 |
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Engine Performance |
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Design RPM |
120000 |
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Fuel Flow (lb/hr) |
31.7 |
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Thrust (lb) |
25 |
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Exhaust Jet Velocity (ft/s) |
1344 |
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S.F.C. (lb/hr/lbf) |
1.59 |
SWB-35 Micro Gas Turbine
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Dual SWB-35 Turbines in the NSCU/Navy |
The SWB-35 micro-turbine was SWB’s first production engine. This turbine has proven to be an extremely reliable power plant and has flown repeatedly in such projects as LoFlyte and NSCU/Navy NAV-AIR F-18 among others. This turbine has been extensively tested in our test cell using the ASME 19.1 industry standard turbine testing procedures. With the AMA's new rule limiting model turbine thrust at 35 pounds, we are now making the SWB-35 available to modelers for large scale jets. The SWB-35 comes complete with state of the art electronic engine control package and starting equipment. Call today to place an order.
| Specifications | SWB-3 |
| Diameter (inches) | 5.3 |
| Length (inches) | 11.925 |
| Weight | 7.5 |
| Compressor | |
| Air Flow (lb/s) | 0.66 |
| Pressure Ratio (ts) | 3.0 |
| Efficiency (t-s%) | 71.5 |
| Combustor | |
| Pressure Drop (s-t%) | 6 |
| Loading (BTU/h/ft3/atm) | 11.8E6 |
| Efficiency (%) | 99 |
| Turbine | |
| Inlet Temp. (degrees F) | 1694 |
| Pressure Ratio (t-t) | 1.84 |
| Efficiency (t-t%) | 77 |
| Turbine Nozzle | |
| Exhaust Gas Temp. | 1461 |
| Nozzle Pressure Ratio (t-s) | 1.532 |
| Engine Performance | |
| Design RPM | 120000 |
| Fuel Flow (lb/hr) | 49.3 |
| Thrust (lb) | 34.8 |
| Exhaust Jet Velocity (ft/s) | 1632 |
| S.F.C. (lb/hr/lbf) | 1.473 |
| Thrust to weight ratio (lbs/lbs) | 5 |
SWB-45
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The SWB-35 which was originally developed for use in medium to large scale UAV applications has since been redesigned to produce 45 pounds of thrust as compared to the original 35 pounds of thrust. The new SWB-45 contains a new highly efficient compressor and redesigned diffuser, along with a re-matched turbine to increase overall performance and efficiency. The SWB-45 comes complete with electronic engine control package and starting equipment.
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Specifications |
SWB-45 |
| Diameter (inches) | 5.3 |
| Length (inches) | 11.925 |
| Weight | 7.5 |
| Compressor | |
| Air Flow (lb/s) | 0.75 |
| Pressure Ratio (ts) | 3.4 |
| Efficiency (t-s%) | 73 |
| Combustor | |
| Pressure Drop (s-t%) | 6 |
| Loading (BTU/h/ft3/atm) | 11.8E6 |
| Efficiency (%) | 99 |
| Turbine | |
| Inlet Temp. (degrees F) | 1694 |
| Pressure Ratio (t-t) | 1.98 |
| Efficiency (t-t%) | 77 |
| Turbine Nozzle | |
| Exhaust Gas Temp. | 1435 |
| Nozzle Pressure Ratio (t-s) | 1.613 |
| Engine Performance | |
| Design RPM | 126000 |
| Fuel Flow (lb/hr) | 54.8 |
| Thrust (lb) | 45 |
| Exhaust Jet Velocity (ft/s) | 1747 |
| S.F.C. (lb/hr/lbf) | 1.333 |
SWB-100
SWB proudly announces the birth of our newest turbine - the SWB-100. Actually producing 107 lb/ft thrust, this is one of the largest and most powerful turbines produced by SWB. This turbine is designed for professional large scale UAV applications. The engine has been extensively tested in our test cell using industry standard turbine testing procedures. The testing and qualification stages of this turbine engine are done. The engine is available for delivery, call today for more details.
| Specifications | SWB-100 |
| Diameter (inches) | 6.5 |
| Length (inches) | 16.173 |
| Weight | 11.5 |
| Compressor | |
| Air Flow (lb/s) | 1.73 |
| Pressure Ratio (ts) | 3.6 |
| Efficiency (t-s%) | 73.3 |
| Combustor | |
| Pressure Drop (s-t%) | 5.4 |
| Loading (BTU/h/ft3/atm) | 12.4E6 |
| Efficiency (%) | 99 |
| Turbine | |
| Inlet Temp. (degrees F) | 1835 |
| Pressure Ratio (t-t) | 1.84 |
| Efficiency (t-t%) | 84.4 |
| Turbine Nozzle | |
| Exhaust Gas Temp. | |
| Nozzle Pressure Ratio (t-s) | 1.85 |
| Engine Performance | |
| Design RPM | 76000 |
| Fuel Flow (lb/hr) | 140 |
| Thrust (lb) | 107 |
| Exhaust Jet Velocity (ft/s) | 1989 |
| S.F.C. (lb/hr/lbf) | 1.31 |
Turbo Shaft
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New Technology Being Used Low Cost Miniature Turboprop Engine
The proposed innovation is a Sidewinder configuration Miniature Turboprop Engine (MTE). It utilizes a highly-developed gas producer, with a fine lineage of previously successful SWB Turbines turbojet engines (since 1987), SWB’s U.S. Patents (granted 1998), and low-cost production potential (because it’s rotating components are derived from the commercial turbocharger/vehicle industry). SWB Turbines has proven that it’s customers, including the Army, could benefit from the well-developed turbocharger turbine and compressor component base. The U.S. and other major countries have cultivated a major dependence on truck transportation, transitioning from trains, with increasing dependence on turbocharged diesel power plants. This is the backbone of the U.S. Transportation System. Turbocharged diesel engines have become the standard through a wide range of horsepower, resulting in very high savings leverage for miniature turbines, select super alloys and advanced rotor aerodynamic performance.
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