Your browser is not supported.
For the best experience, please access this site using the latest version of the following browsers:
By closing this window you acknowledge that your experience on this website may be degraded.
Powering the
F-35 Lightning II
Honeywell Aerospace technologies are embedded across the F‑35 Lightning II, powering critical systems that keep this fifth‑generation fighter mission‑ready — today and tomorrow.
PTMS
Our PTMS is the backbone of the aircraft — delivering essential power and thermal performance in one integrated, combat‑proven system. Built to fight today and evolve with the F‑35 mission, without redesign risk.
As future mission systems place greater thermal demands on the aircraft, Honeywell Aerospace is evolving PTMS to provide greater cooling capability while building on its proven architecture.
As advanced sensors, computing, electronic warfare, communications and mission systems evolve, the F-35 will require greater thermal management capacity to accommodate increasing thermal loads.
We are building on the proven PTMS architecture with a scalable cooling growth path:
today
targeted
in the future
The existing 32 kW cooling capability provides the foundation. The 40 kW upgrade targeted for 2029 delivers the next increment of thermal management capacity, while a pathway to 80 kW provides longer-term growth potential as future requirements evolve.
This roadmap represents increased cooling capability and thermal management capacity.
The future F-35 will require greater thermal management capacity to support evolving mission systems. Honeywell Aerospace's PTMS upgrade builds on an architecture already integrated, fielded and sustained across the F-35 enterprise.
By evolving the proven architecture, the F-35 can gain greater cooling capability while leveraging existing aircraft integration experience, manufacturing capability and sustainment infrastructure.
The power and thermal management system (PTMS) is responsible for optimizing energy usage and ensuring proper cooling of the aircraft's advanced avionic systems.
Our cabin and equipment air cooling and pressurization system maintains an ideal environment for both the pilot and onboard systems. This is critical for the pilot’s comfort and safety as well as the efficient functioning of equipment.
The GTS130 auxiliary power unit (APU) provides auxiliary and emergency power, assists in engine start-up and maintains power for onboard systems when the engines are off.
The liquid cooling subsystem plays a crucial role in maintaining the optimal temperature for the electronic systems. By preventing overheating, it ensures efficient functioning and longevity of critical systems.
Honeywell’s bleed air control subsystem manages the engine's operating temperatures, which is vital for performance and longevity.
The fuel thermal management system regulates fuel temperature to optimize combustion and engine performance, while enhancing overall fuel efficiency.
Our fan duct heat exchangers and precooler systems maintain the thermal balance necessary for the durability and reliability of the aircraft’s systems.
Honeywell’s OBOGS uses ambient air to produce breathable oxygen for the pilot. This saves weight and space on the aircraft, enhancing operational efficiency.
