SG923-0015-EDU available now with and without qualified internal GPS

Accepting orders for SG901-1229 Flight Units with and without qualified internal GPS

Sagrad is now shipping the SG923-0015 Engineering Development Units (EDU) with and without internal qualified GPS, and we are accepting orders for the SG901-1229 Flight Units with and without GPS. Here is an overview of our current product specifications.



  • Flight Qualified to Air Force/NASA/FAA Safety Requirements (RCC 319-14 compliant)
  • Ideally suited for new Autonomous Flight Safety Systems
  • Weight <2.8 lbs. (unit only)
  • Power: Nominally <13 watts at 28 VDC
  • Size 7” X 5.75” X 2”
  • Integrated GPS
  • Support for External GPS (INS or GPS/INS hybrid)
  • Term and TermNOT (for normally closed valves) configurable


  • Proven Design
  • Qualification with 30th & 45th Air Force Space Wings and FAA expected to be completed by Q4 2018
  • No additional NRE Required

SG923-0015 EDU (Engineering Development Unit)

Available Now

  • Same design as SG901-1229 Flight Unit
  • Selected part substitutions, for cost & lot-control/Mil-Spec part efficiencies
  • Limited acceptance testing; not to complete Flight Unit Acceptance Test Plan
  • Available with and without GPS


Accepting Production Orders Now

Final qualification and first operational flight scheduled in Q4 2018

Block Level Diagram


AFTU Interfaces

  1. TERM: Used for ordnance or normally open valves. Designed to deliver up to 5 amps. Voltage drop for 1 amp is ~ 1V; for 5 amps is ~5V.

  2. TERM NOT: Used for normally closed valves. Designed to deliver up to 3 Amp. Voltage drop is expected to be 3 volt.

  3. LIFTOFF: 28 V, with ground supplied by vehicle (Umbilical)

  4. Telemetry: Isolated RS422 to Vehicle telemetry.

  5. 28V Input: 22 to 36 Volts DC Input to AFTU.

  6. GPS Antenna: SMC connect to an antenna, splitter or combiner.

  7. Spare2: Isolated RS422, use is unrestricted, can be used for GPS, INS, IMU, Telemetry, etc.

  8. Spare1: Isolated RS422, use is unrestricted, can be used for GPS, INS, IMU, Telemetry, etc.

  9. Health Monitor: Isolated 28V discrete, indicates to the other chassis the AFTU health.

  10. GPS Cross-strap: Isolated RS422 one-direction communication, output of internal GPS receiver is sent to the other chassis.

  11. Console: Isolated RS422, used for console communication to GSE over umbilical.

  12. Ethernet: Supports up to 1 Gigabit Ethernet, Used for vehicle and GSE communications. Also provides two-way telemetry link to GSE

AFTU Mechanicals

NASA AFTU Testing Matrix – Maximum Predicted Environmentals (MPEs)

Environment Parameter

Environment Qualification

Operating Maximum Temperature

-34ºC / 71ºC

Pre-flight Maximum Temperature

-34ºC / 71ºC

Random Vibration

20.84 Grms (MIL-STD-883)

20-2000Hz, 4.5 min

Sinusoidal Vibration

2.1 G (5-100Hz, 4.5 min

Transportation Vibration

1.05 Grms, 60 min


100Hz, 100g

2000Hz, 1300g

10,000Hz, 1300g

Transportation Shock

48 inch drops – all corners, edges & faces

Max. Predicted Flight Acceleration Level

15.4g (x,y,z)

Max. Predicted Sound Pressure Level

149.6 dB, 50Hz-10kHz

Electromagnetic Environment


30th, 45th/NASA Ranges

Temperature / Humidity / Altitude / Vacuum

-34ºC & 71ºC; 95% RH; 50kft (1 Torr)

AFTS News & Announcements

Lisa Valencia
May 24, 2017

Engineer Manages AFTS Software Certification

Lisa Valencia is the project manager for the Autonomous Flight Termination System, AFTS, in the Engineering Directorate at NASA's Kennedy Space Center in Florida. Lisa is working with Sagrad to develop AFTUs for the program. Read More




Sagrad is a privately-held corporation, incorporated in August of 2004. The business is organized into four business units that provide products and engineering services to companies worldwide.

  • Wi-Fi
  • Aerospace
  • OEM Products
  • Electronics Manufacturing

Sagrad provides full lifecycle electronics development, from requirements through design, development, in-house manufacturing, test and packaging.