Sagrad AFTU

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.

OVERVIEW OF CURRENT PRODUCT SPECIFICATIONS

Features

• 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

Advantages

• 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

SG901-1229 FLIGHT UNIT

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