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Technical Committee A-6, Aerospace
Actuation, Control and Fluid Power Systems
SAE A-6 Project A-6A3-08
ARP94910, Guide to the Specification ofan FCS for a Militar
UA
Presentation for Panel Access toAirspace
William B. Facey
. . .Patuxent River NAS, MD
[email protected]
AUVSIs Unmanned Systems North America 2009Washington, DC, August
10-13, 2009 9/3/2009, Page 1
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Technical Committee A-6, Aerospace
Actuation, Control and Fluid Power Systems
Project Definition & Approval
In July 2007 the A-6 released AS94900 Aerospace Flight Control
Systems , ,
For Adopted by DoD to replace MIL-F-9490 on November 5,
2007.
Version of the AS for UAs suggested to Armed Services and
drew
immediate support from NAVAIR, the US Army and the USAF.
Approved by A-6 Steering Council as an ARP because although
theFCS technology employed for UAs is mature, the application is
not
Whereas an AS Aerospace Standard contains specific
performance
requirements. conforming to broadly accepted engineering
practices
an ARP - Aerospace Recommended Practice is intended as a guide
tostandard engineering practices. with content of a more general
nature,
or that have not yet gained broad acceptance.
AUVSIs Unmanned Systems North America 2009Washington, DC, August
10-13, 2009 9/3/2009, Page 2
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Technical Committee A-6, Aerospace
Actuation, Control and Fluid Power Systems
What is The Need?
A document that will provide a basis for making design and
per ormance ec s ons an u gments or uture s.
UAs have different needs from manned aircraft
Currently no standards for UA FCS subsystems.
The specifications for UAs now in development relied on
selecting
relevant requirements from manned aircraft specifications.
Difficult, time-consumin rocess with no industr involvement.
UA mission creep - continuing expansion of UAS missions and
operating areas.
Drives us to re uire increased levels of airworthiness out of
UAS
platforms.
Not always possible if not designed into system from start.
AUVSIs Unmanned Systems North America 2009Washington, DC, August
10-13, 2009 9/3/2009, Page 3
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Technical Committee A-6, Aerospace
Actuation, Control and Fluid Power Systems
Terms of Reference
Guide to the specification of the FCS for the UA not the entire
UAS
Cover range of FCS capability required for the range of UAs
coveredby figure A.4 in the DOD 2007 roadmap. (Except smallest
TBD)
, , ,test and quality assurance requirements, similar in
structure, scopeand depth to AS94900.
Function and performance oriented
Guiding creation of a performance requirement specification
Covers FCS and subsystems design and integration with the
vehicle butdoes not specify specific architectural approaches.
mp as s: The differing levels of performance capability required
for different UA
categories and operational areas.
AUVSIs Unmanned Systems North America 2009Washington, DC, August
10-13, 2009 9/3/2009, Page 4
r mar y e av or o ow ng rst an secon a ures.
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Technical Committee A-6, Aerospace
Actuation, Control and Fluid Power Systems
Concluding Notes:
First A-6 balloting to A-6 panels and A-6 in 2010, release
in
.
We think, with the exception of standards associated with UA
, .
It is likely to precede standards and regulations
determining
how some key requirements are derived. UA standardswriting will
be iterative for some time.
AUVSIs Unmanned Systems North America 2009Washington, DC, August
10-13, 2009 9/3/2009, Page 5
