Hermes
Overview
Hermes is the first proper high-power rocket that I built after earning my Level 1 high-power certification. It is built to fly on 29 mm mid to high-power motors and can be used for a number of purposes. Most importantly, Hermes was used for many early test flights of the Project 767 instrument payload in April and September of 2023. Hermes continues to serve as an excellent testbed for high-power rocket components, allowing me to test vital components such as improved shock cord mounts and recovery techniques.
Height
1193 mm / 46.1 in
Diameter
78.5 mm / 3.09 in
Mass
0.94 kg / 33 oz
Motor Mount
29 mm / 1.14 in
Flight Profile
Subsonic
Speed Record
181 m/s / 407 mph / Mach 0.53 (4/29/23, unconfirmed)
Payload
Internal Height
220 mm / 8.66 in
Internal Diameter
76 mm / 2.99 in
Capability
Hermes’ payload bay can house a variety of sensors to measure information about its flight and behavior
Hermes’ payload can also house a mass simulator for stress testing of high-power rocket components
The payload section also has a mount for a single down-facing camera and has air pressure vent holes for higher altitudes
Booster
Height
631 mm / 24.84 in
Diameter
78.5 mm / 3.09 in
Motor Mount
29 mm / 1.14 in
Capability
Hermes’ booster section powers flights with 29 mm high and mid-power engines
The engine mount is equipped with one downward-facing camera mount
The booster also houses recovery devices like the parachute, shock cord, and Chute Release