CURRENT PRODUCT SPECIFICATIONS
SG923-0015-EDU available now with and without qualified internal GPS
Accepting orders for SG901-1229 Flight Units (our standard product)
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 (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”
- 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 Q3 2019
- 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 Q3 2019
Block Level Diagram
AFTU Interfaces
- 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.
- TERM NOT: Used for normally closed valves. Designed to deliver up to 3 Amp. Voltage drop is expected to be 3 volt.
- LIFTOFF: 28 V, with ground supplied by vehicle (Umbilical)
- Telemetry: Isolated RS422 to Vehicle telemetry.
- 28V Input: 22 to 36 Volts DC Input to AFTU.
- GPS Antenna: SMC connect to an antenna, splitter or combiner.
- Spare2: Isolated RS422, use is unrestricted, can be used for GPS, INS, IMU, Telemetry, etc.
- Spare1: Isolated RS422, use is unrestricted, can be used for GPS, INS, IMU, Telemetry, etc.
- Health Monitor: Isolated 28V discrete, indicates to the other chassis the AFTU health.
- GPS Cross-strap: Isolated RS422 one-direction communication, output of internal GPS receiver is sent to the other chassis.
- Console: Isolated RS422, used for console communication to GSE over umbilical.
- 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 |
|
Shock |
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 |
MIL-STD-461F 30th, 45th/NASA Ranges |
|
Temperature / Humidity / Altitude / Vacuum |
-34ºC & 71ºC; 95% RH; 50kft (1 Torr) |
