Company timeline
NOV 2018
Hermeus is Founded
APR 2019
Hermeus raises seed round
Hermeus raises seed funding from Khosla Ventures and announces advisory board
MAY 2019
Hermeus moves into first office
Home to a community of aviation businesses, PDK Airport is the perfect spot for the fledgling company to lay its foundations.
FEB 2020
PROTOTYPE engine test successful
Hermeus successfully demonstrates both turbojet and ramjet operating modes in its sub-scale prototype engine – reaching speeds of Mach 4+.
AUG 2020
Hermeus signs afwerx STRATFI contract
These funds are instrumental in supporting Hermeus’ Quarterhorse program.
OCT 2020
Hermeus raises $16 million series A LED BY CANAAN
MAY 2021
hermeus moves into NEW HEADQUARTERS
Named simply, “The Factory”, this 110,000 sq. foot facility will house the production of Hermeus’ first vehicle: Quarterhorse.
JUL 2021
j-85 engines acquired
These engines make up the heart of Chimera, our proprietary Turbine-based combine cycle engine powering Quarterhorse.
AUG 2021
hermeus activates propulsion test facility
MAR 2022
hermeus raises $100 million series b led by sam altman
NOV 2022
Chimera demonstrates mode Transition
Hermeus demonstrates transition from turbojet to ramjet with its full scale Chimera engine. This is a major de-risk for hypersonic technology.
DEC 2022
f100 engines acquired
Pratt & Whitney’s F100 turbofan, used in the F-15 and F-16 aircraft, will act as the turbine core of Hermeus’ turbine-based combined cycle engine, Chimera II.
JAN 2023
SUBSCALE wind tunnel testing
The findings attained during these tests are key to understanding the aerodynamics of Quarterhorse.
MAY 2023
Mk 0 BUILD BEGINS
Mk 0 is the first of four vehicle in the Quarterhorse program, which will culminate in a vehicle capable of surpassing the all-time airspeed record held by the SR-71.
NOV 2023
DIU Contract signed
Through this multi-year contract, Hermeus will demonstrate key enabling technologies for hypersonic aircraft.
NOV 2023
Mk 0 TESTING COMPLETE
This non-flying prototype acts as a ‘dynamic iron bird by validating all major aircraft subsystems in a real world environment.
DEC 2023
Mk 1 BUILD BEGINS
MAY 2024
f100 Precooler testing begins
The testing marks the first major engine milestone for Hermeus’ supersonic Quarterhorse MK 2 Aircraft
DEC 2024
quarterhorse mk 1 completes grounds testing at edwards
This segment of the flight test campaign was completed in just 21 days and satisfies technical requirements for flight approval.
MAR 2024
Mk 1 unveiled
Our first aircraft, MK 1’s primary mission is to demonstrate high-speed takeoff and landing.
SEP 2024
hermeus breaks ground on HEAT facility
This “high-enthalpy air-breathing test” facility will advance the U.S. capability to more effectively test and field various hypersonic technologies.
