Project A6A3-03-01

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Project A6A3-03-01 AS 94900 Aerospace - Flight
Control Systems, Design, Installation, and Test
Of Piloted Military Aircraft, General
Specification For Sponsors Henry Harschburger
and Dave Flavell

• Background
• There is an industry need for a comprehensive
  flight control system specification with details
  similar to MIL-F-9490 and lessons learned
• MIL-F-9490D was issued in 1975 and was reaffirmed
  in 1992
• However, it is still a very useful document.
  Tailored versions are being used on the F/A-18,
  V-22, and RAH-66 Comanche
• Government representatives have agreed to
  participate with Committee A-6 in development of
  an Aerospace Standard for flight control systems

A-6A3 Sept 03
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Project A6A3-03-01 AS 94900 Scope. This
specification establishes general performance,
design, development and quality assurance
requirements for the flight control systems of
military manned piloted aircraft. Flight control
systems (FCS) include all components used to
transmit flight control commands from the pilot
or other sources to appropriate force and moment
producers. Flight control commands may result in
control of aircraft flight path, attitude,
airspeed, aerodynamic configuration, ride, and
structural modes. Among components included are
the pilots controls, dedicated displays and
logic switching, transducers, system dynamic and
air data sensors, signal computation, test
devices, transmission devices, actuators, and
signal transmission lines dedicated to flight
control. The interfaces of flight control systems
with related subsystems are defined.
A-6A3 Sept 03
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Project A6A3-03-01 AS 94900

• MIL-F-9490D will be the baseline,with additional
  information and lessons learned from recent
  government and industry documents
• Major Tasks
• Assemble an ad-hoc working group
• Provide a Microsoft Word version of MIL-F-9490D
  to the working group
• Review MIL-F-9490D
• Status of applicable documents
• Identify sections requiring major updates
• Identify new topics/sections to be added
• Format baseline document in SAE format
• Incorporating changes
• Ballot to Panel

A-6A3 Sept 03
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Project A6A3-03-01 AS 94900

• FCS Specification Working Group
• Sponsor - Henry Harschburger
• NAVAIR - Shawn Donley, Hank Agnew
• USAF - Kahtan Awni, Paul Hundley
• Army - TBD
• Boeing - Ian Halley
• Northrop Grumman - Ken Ugowski, Aldo Arena
• Lockheed Martin - Dave Bodden
• BAE Systems - Kurt Vieten, Jay Blosser
• Hamilton Sundstrand - Steve Avritch
• HR Textron - Mark Willians
• Parker Aerospace - Glenn Zwicker
• Moog - Dave Flavell, Scott Schaefer

A-6A3 Apr 05
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Project A6A3-03-01 AS 94900

• Plan/Tasks
• Because of size of document Flight Control Panel
  approved change in
• balloting process to review document in three
  major parts - June 2004
• Table of contents, cross ref. AS94900 to
  MIL-F-9490 Fall 2004
• Submit Part 1 of the document for ballot. Fall
  2004
• Submit Part 2 of the document for ballot. -
  Spring 2005
• Submit Part 3 of the document for ballot.
  Summer 2005
• Submit the complete document for ballot. - Fall
  2005.
• Submit Document for Committee A-6 ballot - Early
  2006
• Status Tasks
• Ballot of Part 1 - Complete Oct 2005
• Second draft of Part 1 balloted/approved
  Complete 14 Feb 2005
• Review of Part 2 by Working Group - Complete 15
  Feb 2005
• Submit Part 2 for ballot 1 March 2005

A-6A3 Apr 05
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Project A6A3-03-01 AS 94900
3.5 Subsystem Level Requirements 3.5.1
Subsystem Requirements 3.5.2 Electrical Power
Subsystem 3.5.3 Hydraulic Power Subsystem 3.5.4
Pneumatic Power Subsystem 3.5.5 Actuation
Subsystems 3.5.6 Trim Subsystem 3.5.7
Artificial Feel Subsystem 3.5.8 Display and
Annunciation 3.5.6 Sensors 3.6 Component
Design and Fabrication Requirements 3.6.1
Component General Requirements 3.6.2
Mechanical Components 3.6.3 Electrical and
Electronic Components 3.6.4
Assembling 3.6.5 Component
Installation 3.6.6 Component
Fabrication 3.6.7 Specific Component
Requirements 4 Quality Assurance
Provisions 4.1 General Requirements 4.2
Analysis Requirements 4.3 Software
Verification 4.4 Test Requirement 4.5
Qualification (Preproduction) Tests 4.6
Documentation
Part 1 Ballot 10/15/04 and 2/14/05
Part 3
Part 2 Submit Ballot 3/1/05
Plan Incremental Balloting of Document to Panel
A-6A3 Apr 05
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Project A6A3-03-01 AS 94900
For more information, or to participate,
contact Shawn Donley shawn.donley_at_navy.mil 301
-342-8522