[NEWS]Isengard is in Y Combinator - Summer 2026UNCLASSIFIED // CUI

Gas turbine systems

Propulsion

Isengard turbojet

Overview

Power, built in-house.

Propulsion is the bottleneck most strike systems never solve. Isengard designs and builds its own turbojets - combat-tested, rate-producible, and tuned for the airframes they fly. Two engines anchor the line: the cruise-missile-class TJ-100 and the compact TJ-40.

TJ-100 turbojet

Cruise-missile class.

A combat-tested single-spool turbojet for high-subsonic strike systems - qualified, fielded, and ready for rate production. Two TJ-100s power the XQ 770 Freedom Fighter.

1,000 N
Thrust class
TRL 9
Maturity
TJ-100 datasheet →
Engine typeSingle-spool turbojetJet A-1
Thrust class1,000 N~225 lbf
MaturityTRL 9Combat-tested
ApplicationXQ 770 (x2)High-subsonic strike

TJ-40 turbine

Compact class 40.

A single-spool turbojet for unmanned aerial vehicles and defense platforms - a balance of thrust, efficiency, and rugged reliability in a tightly packaged, airframe-ready envelope.

40 kgf
Max thrust
10.8:1
Thrust / weight
TJ-40 datasheet →
Max thrust @ 100% RPM392 N / 40 kgf88.2 lbf
Dry weight3.7 kg8.16 lb
Max rotational speed98,000 rpmidle 40,800 rpm
Compressor pressure ratio3.8 : 1single-spool
Thrust-to-weight10.8 : 1dry
Outer diameter148 mm5.83 in
Overall length370 mm14.57 in
Recommended fuelJet A-1 / Kerosene1.2 lpm

Why in-house

Engineered for the airframe.

Packaging

Compact & light

Tightly packaged envelopes for straightforward UAV integration across the strike line.

Response

Rapid throttle

Fast spool dynamics for responsive tactical control, with a fuel-efficient cycle that extends endurance.

Production

Rugged & rate-ready

Built for mass production and field reliability - customizable nozzle and mounting options per platform.

Isengard gas turbine systems

Request the propulsion datasheets.

Full TJ-100 and TJ-40 performance and integration data are available to allied governments, primes, and qualified partners.

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