Please make a donation to support Gunter's Space Page.
Thank you very much for visiting Gunter's Space Page. I hope that this site is useful and informative for you.
If you appreciate the information provided on this site, please consider supporting my work by making a simple and secure donation via PayPal. Please help to run the website and keep everything free of charge. Thank you very much.


Eagle [Orbital ATK]

EAGLE (ESPA Augmented Geostationary Laboratory Experiment) is an experimental satellite built by Air Force Research Laboratory (AFRL) and is flown via the STP (Space Test Program).

AFRL ordered the Eagle-bus from Orbital in 2012. It consists of a ESPA adapter fitted with a propulsion module and Moog Broad Reach avionics, software and GPS receiver.

EAGLE will host at least five STP-sponsored payloads. It can support payloads up to a weight of 1086 kg for a mission of at least one year.

Following payloads are manifestd on EAGLE - three of them deployable:

  • HTI-SpX (Hypertemporal Imaging Space Experiment) provided by Air Force Research Laboratory Space Vehicles Directorate (AFRL/RV) is to help to improve the understanding of hypertemporal imaging, which involves blending images taken of different spots on the Earth in several different spectral wavelengths at regular intervals over time.
  • Mycroft (deployable)
  • CEASE-III-RR (Compact Environmental Anomaly Sensor III Risk Reduction) payload
  • ISAL (Inverse Synthetic Aperture Ladar) to provide high resolution images which are not limited in resolution by the diffraction limit of the telescope collecting the imaging data. This makes it an ideal method for imaging Geosynchronous Earth Orbit (GEO) space objects
  • ARMOR (AFRL-1201 Resilient Spacecraft Bus Development Experiment) (deployable ?)

EAGLE was launched in 2018 as a secondary payload on the AFSPC 11 mission on an Atlas-5(551) rocket. Soon after reaching its orbit above the geostationary belt, it deployed three subsatellites (Mycroft and two unidentified, USA 286 and USA 287).

Nation: USA
Type / Application: Technology
Operator: AFRL
Contractors: Orbital Sciences Corporation (OSC) → Orbital ATK
Equipment: HTI-SpX, Mycroft, CEASE-III-RR, ISAL, ARMOR
Configuration: Eagle-Bus ESPA (ESPAStar)
Propulsion: ?
Power: Deployable solar array, batteries
Lifetime: 1 year
Orbit: 38992 km × 38992 km, 0.0
Satellite COSPAR Date LS Launch Vehicle Remarks
EAGLE (USA 284) 2018-036B 14.04.2018 CC SLC-41 Atlas-5(551) with CBAS 1, Mycroft, USA 286, USA 287
Further STP missions:

Cite this page: