Integrated
ROS-RYB series · 12 models
Fuel pumps that keep a small turbine running
Brushless three-gear pumps for 6–80 kgf thrust engines. The 12–20 V series runs 0.76–3.2 L/min; the 28 V series holds up to 1.0 MPa and 290 L/h at 12 000 m. The third gear keeps the discharge primed, so an air bubble in the line is unlikely to put the flame out.
- 0.76–3.2 L/minflow range
- 290 L/h28 V series peak
- 12 000 maltitude ceiling
- −40…+70 °Coperating range
Every unit is flow- and pressure-tested before shipment · released against a written technical status sheet · Validation
Three families
One architecture, three duty levels
Pick by bus voltage and engine class. Every model shares the same brushless gear-pump head, so spares and mounting practice carry across a fleet.
01
Universal series
12–20 V • 0.76–3.2 L/min
Brushless three-gear pumps for 6–80 kg thrust turbojets and UAV engines. The third gear keeps the outlet primed, so an air slug in the fuel line does not stall the engine.
View all models → 02Integrated supply units
30–80 kg class • up to 150 L/h
Main pump, ignition pump, filter and solenoid valves combined into one supply-and-control unit for larger engines.
View all models → 03Custom 28 V series
28 V DC • 0.6–1.0 MPa • 12 000 m
High-pressure 28 V pumps specified against a duty-cycle envelope, built for airframe integration and altitude work up to 12 000 m.
View all models →Catalogue
The ROS-RYB range
Add the models you are evaluating to your RFQ list — no prices, no checkout. We answer with a quotation, lead time and datasheet by e-mail.
Integrated
Integrated
Integrated
Universal
Universal
Universal
Universal
Universal
Universal
28 V custom
ROS-RYB 120 (28 V)
- Flow rate≥ 120 L/h
- Outlet pressure0.6 MPa
- Supply voltage28 V DC
- Mass≤ 400 g
28 V custom
28 V custom
How it works
Three gears, not two
A gear pump moves fuel by changing the volume trapped between the gears and the pump body.
As the gears turn, the volume on the disengaging side grows, creating a vacuum that draws fuel in; on the meshing side it shrinks and pushes fuel into the line. The mesh line separates suction from discharge, and outlet pressure is set by the restriction downstream of the pump. Our pumps add a third gear to that head: when a bubble reaches the pump, the extra gear keeps the discharge primed instead of letting the flow collapse — the classic cause of a flameout on a small turbine.
- Brushless motor — no brush wear, no sparking
- Three-gear head — tolerant of air entrainment
- No-leak sealing at rated condition
- RP-3 jet fuel, ≥ 70 % fraction
Validation
Measured on our own benches
Flow, pressure, duty-cycle and endurance runs are recorded in-house before a model is released. Selected clips from the test cell:
Applications
Matched to engine thrust
A starting point for selection. Tell us the engine, the bus voltage and the altitude envelope and we will confirm the model.
01
30 / 50 class
6–14 kg and 17–30 kg thrust engines, single 3–4S pack, direct feed from the tank.
02
100 class
60–80 kg thrust engines. Pump, filter and valves as one supply unit.
03
28 V class
Airframe-integrated pumps up to 1.0 MPa and 12 000 m altitude.
Send us the engine, we send back the pump
Thrust, fuel type, bus voltage, altitude and duty cycle are enough for a first recommendation. Quotations normally go out within one working day.