Wankel engine

O.S. Engines 49-PI Type II 0.30 cu in Wankel engine

OS Wankel engine osmg1401-b

The small O.S. Engines 49-PI Type II Wankel engine from http://www.osengines.com/engines/osmg1401.html

Engine power output in kWatts kW / kg J/ccfam
49-PI Type II 0.934 at 17,000 rpm 2.788 0.663

The Nitto range of Wankel engines

NR-20EP

20cc displacement engine running on glow (Alcohol) fuel for use in an airplane.

nitto NR-20EP

Our thanks to Nitto Manufacturing for supplying a copy of the photograph above and the data below.

YEN 118,000, 28 FEB 2008 excluding Glow plug and muffler
1.466 kg including the mount
19.75 cc  
Glow Alcohol
2,000 – 10,000 rpm  
approximately 2.24 kWatts approximately 3 HP
APC 16” x 10” indication only
8,600 rpm based on the above propeller when used
about 100 cc / minute continuous running at full-bore

NR-20EH

20cc displacement engine running on glow (Alcohol) fuel for use in a helicopter.

nitto 20-EH

Our thanks to Nitto Manufacturing for supplying a copy of the photograph above and the data below.

YEN 118,000, 28 FEB 2008 excluding Glow plug and muffler
1.493 kg including the mount and cooling fan
19.75 cc  
Glow Alcohol
2,000 – 13,000 rpm  
approximately 2.24 kWatts approximately 3 HP
acceptable up to 15 kg please respect the power indication and do not try to fly with heavy load
about 38.5 cc per minute continuous hovering with no load

NRG-20EP

20cc displacement engine running on Gasoline for use in an airplane.

nitto NRG-20EP
YEN 168,000, 10 MAR 2008 excluding muffler, including the ignition system (AMP type/full automatic spark advance) and spark plug
1.800 kg including the mount
19.75 cc  
Gasoline
2,000 – 10,000 rpm  
approximately 1.34 kWatts approximately 1.8 HP
APC 16” x 8” indication only
8,000 rpm based on the above propeller when used
50 cc per minute continuous running at full-bore

NRG-20EH

20cc displacement engine running on Gasoline for use in a helicopter.

nitto NRG-20EH
YEN 168,000, 28 FEB 2008 excluding muffler, including the ignition system (AMP type/full automatic spark advance) and spark plug
1.800 kg including the mount and cooling fan
19.75 cc  
Gasoline
2,000 – 11,000 rpm  
approximately 1.34 kWatts approximately 1.8 HP
acceptable up to 10 kg please respect the power indication and do not try to fly with heavy load
about 20 cc / minute continuous hovering flight with no load

Contact and other information

Pamphlet found athttp://www.nitto-mfg.com/english/nrsyokaieng.htm

NITTO MFG. WORKS can make an offer for a "Lower Frame Set" as one of the optional items to make it easier to mount our Wankel Rotary Engines. We recommend "Voyager GS-R" or "Z230 - R" helicopters made by JR, to which the above mentioned optional items can be fitted. You can place your order including these helicopters.

The silencer made by HATTORI Model can be supplied as an optional part by NITTO MFG. WORKS.

Contact information

NITTO MFG. WORKS
YUZO SARATANI President
5-2-33, Wakae-Higashimachi
Higashiosaka City
Osaka 578-0935 Japan
Tel: +81-6-6723-4311, Fax: +81-6-6723-4433
web-site: http://www.nitto-mfg.com/
E-Mail : nitto@nitto-mfg.com

Cubewano announces pre-release of its Sonic30 heavy fuel UAV engine

Sonic30 heavy fuel UAV engine

from http://www.cubewano.com/

Cubewano Limited, a UK company, have announced the release of its first heavy fuel UAV engine. The engine, a 5 hp air-cooled rotary engine, incorporates advanced materials and technology and has a bespoke fuel injection system. This advance release enables airframe manufacturers to evaluate and package the engine, with a view to production models being available in 3-6 months time.

Birmingham, UK April 2, 2008 -- Cubewano announce the release of the pre production development version of its 5 hp heavy fuel engine. The engine is a lightweight, fuel injected, 5 hp, air cooled, single rotor internal combustion engine of the Wankel rotary type.

After many months in development Cubewano are finally happy with the performance of their 5 hp engine to release it for sale. The engine in many respects advances the technology of the Wankel rotary engine by utilising advanced materials including ceramics and specialist coatings to achieve an extremely lightweight 1.5 kg engine.

Cubewano director Craig Fletcher states: “We were convinced that the spark ignition rotary engine was the way to go for small heavy fuel applications but finding small enough fuel injection systems to work under these conditions proved very difficult”. Cubewano have developed their own proprietary ECU system for this application which includes a MAP (Manifold Air Pressure) sensor for automatic altitude compensation.

The engine is designed to use a recirculating oil system and a lightweight ECU, about the size of a matchbox. However, for development purposes, Cubewano have been using a full size ECU and pre mix lubrication. The decision to release the pre-production version is to enable airframe manufacturers to get a head start testing and packaging the Cubewano engine.

Sonic30 heavy fuel UAV engine specs

About: Cubewano, formed in 2007, design and manufacture small, high quality, high power-to-weight ratio internal combustion engines, currently in the 3 to 7 hp range, with multi-fuel capability including Kerosene (also known as JP8, JET-A1 and Heavy Fuel ). The company is based in the heart of British engineering in Birmingham, West Midlands.

The UAV Engines Limited AR741 Wankel engine

AR741 wankel engine

from http://www.uavenginesltd.co.uk/

Design Features

  • Exceptionally high power-to- weight ratio.
  • Economical fuel consumption.
  • Low cross sectional area.
  • Low levels of vibration.
  • Long life

Background

  • The UAV Engines AR741 has an outstanding power-to-weight ratio, combined with much longer life and better SFC, than any alternative engine.
  • It has been developed from the mature UAV Engines AR731 target drone engine, to meet the needs of small surveillance-type UAVs.
  • The UAV Engines AR741 engine has successfully completed a 150 hour FAR-33 type endurance test.

Technical Specifications

  • Single rotor Wankel-type spark ignition engine
  • 208 cc chamber size
  • 28.3 kWatt maximum at 7800 rpm
  • 10.7 kg without generator
  • 9.84 kg/hr at maximum power, 9.0 kg/hr at cruise, 348 g/Watt/hr at maximum power
  • Nominally zero radial vibration. Peak instantaneous torque is 4 times mean.
  • Electronic contact-less magneto. RFI suppressed HT system.
  • Provision for mounting GEC/Plessey 28V, 900 or 1,500 watt
  • Power-to-weight ratio = 2.64 kW / kg
  • Fuel efficiency = 1.046 J / cc_fuel_air_mixture

from http://www.uavenginesltd.co.uk/