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DRIVE - ACCESSORY, 8" BOLT CIRCLE
- Aerospace Standard
- AS469B
- Reaf. Nonc.
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Rationale
THIS DOCUMENT HAS BEEN REAFFIRMED TO COMPLY WITH THE SAE 5-YEAR REVIEW POLICY.
WHERE AN X APPEARS, THE DRIVE TYPES AND DASH NOS. ARE TYPICAL AND PREFERRED.
SEE SHEET 2 FOR SPLINE SIZES AND DETAILS.
THE OVERHUNG MOMENT AND WEIGHT WILL BE DESIGNATED BY A DASH NUMBER IN THE DRIVE CALLOUT PER ABOVE TABULATION. EXAMPLE: AS 470 BV-2 IS AN 85 HP DRIVE WITH 1000 LB-IN. OVERHUNG MOMENT AND 100 LB. ACCESSORY WEIGHT.
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SPEED: TYPE AV THROUGH FV DRIVES SHALL BE 7700 ± 200 RPM, TYPES GV AND HV 9800 ± 200 RPM WHEN POWER SOURCE IS OPERATING AT THE HIGHEST STABILIZED SPEED AT ANY OPERATING CONDITION.TYPE 6C DRIVES SHALL BE 6000 (CONSTANT) RPM FROM GROUND IDLE TO MAX POWER SOURCE SPEED.TYPE 8C DRIVES SHALL BE 8000 (CONSTANT) RPM FROM GROUND IDLE TO MAX POWER SOURCE SPEED.
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STRENGTH: TYPE V DRIVES SHALL BE CAPABLE OF DELIVERING RATED POWER CONTINUOUSLY FROM GROUND IDLE TO MAXIMUM POWER SOURCE SPEED. THEY SHALL ALSO WITHSTAND A STATIC TORQUE EQUIVALENT TO FIVE (5) TIMES RATED POWER AT GROUND IDLE SPEED WITHOUT FAILURE OR PERMANENT DEFORMATION. THIS STATIC TORQUE VALUE SHALL BE SPECIFIED IN THE POWER SOURCE MODEL SPECIFICATION!. THE CONTINUOUS AND STATIC TORSIONAL STRENGTH OF THE TYPE C DRIVES SHALL BE SPECIFIED IN THE POWER SOURCE OR CONSTANT SPEED TRANSMISSION (DRIVE) MODEL SPECIFICATION.
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OIL SUPPLY HOLES: DOWEL HOLE AND HOLES FOR SUPPLYING OIL TO ACCESSORY SHALL NOT BE PROVIDED UNLESS SPECIFIED IN THE POWER SOURCE MODEL SPECIFICATION. WEEN SO SPECIFIED, THE AVAILABLE OIL PRESSURE AND FLOW SHALL BE STATED IN TEE MODEL SPECIFICATION WITH ONE HOLE LOCATION SHOWN ABOVE. SIZE OF OIL SUPPLY, AND DRAIN HOLES IF REQUIRED, SHALL BE SHOWN ON THE POWER SOURCE INSTALLATION DRAWING. PLUGS SHALL BE FURNISHED FLUSH OR BELOW PAD SURFACE.
OIL LEAKAGE OUT OF DRIVE SHALL NOT EXCEED 3 CC PER HOUR. PROVISIONS FOR DRAINING OIL FROM THE PILOT CAVITY SHALL BE SUPPLIED UNLESS OTHERWISE SPECIFIED IN THE POWER SOURCE MODEL SPECIFICATION.
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ADAPTER: ADAPTER IN ACCORDANCE WITH AS 517 SHALL BE FURNISHED WHEN SPECIFIED IN THE POWER SOURCE MODEL SPECIFICATION.
COVER, MS9243 SHALL BE FURNISHED ON THIS DRIVE WHEN SPECIFIED IN POWER SOURCE MODEL SPECIFICATION.
REMOVE ALL BURRS AND SHARP EDGES. DIMENSIONS IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: DECIMALS ± .010, ANGLES ±2°.
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ACCESSORY SPACE: SPACE AVAILABLE FOR ACCESSORIES SHALL BE AS SHOWN ON THE INSTALLATION DRAWING.
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NOMINAL USE: THE NOMINAL USE OF THE VARIABLE SPEED TYPE DRIVES IS TO DELIVER POWER TO VARIABLE SPEED ACCESSORIES OR CONSTANT SPEED TRANSMISSIONS. TEE NOMINAL USE OF THE CONSTANT SPEED TYPE DRIVES IS TO DELIVER POWER TO CONSTANT SPEED ACCESSORIES. HIGH SPEED FLUID POWER PUMPS MAY BE USED ON TYPE AV THROUGH FV DRIVES WITH TORQUE VALUES SPECIFIED IN THE POWER SOURCE MODEL SPECIFICATION.
THIS DRAWING COMPLETELY DEFINES THE DESIGN REQUIREMENTS. SURFACE ROUGHNESS SYMBOL
AS 291 (AA)
FOR DETAILS OF MATING FLANGE, SEE AS 472.
THIS IS A DESIGN STANDARD AND IS NOT TO BE USED AS A PART NUMBER.
Recommended Content
Aerospace Standard | DRIVE-ACCESSORY, 5” BOLT CIRCLE |
Aerospace Standard | DRIVE - ACCESSORY, 8" BOLT CIRCLE |
Aerospace Standard | DRIVE-ACCESSORY, 10” BOLT CIRCLE |
Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | DRIVE TYPE | |
Unnamed Dataset 2 | SPLINE DESIGN DATA | |
Unnamed Dataset 3 | SPLINE SIZE FOR POWER RATING |
Issuing Committee
E-25 General Standards for Aerospace and Propulsion Systems
The SAE E-25 General Standards for Aerospace & Propulsion Systems committee addresses aerospace propulsion systems and components. These systems and components include bolts, screws, nuts, washers, studs, rivets, pins, covers, O-rings, brackets, plugs and associated procurement requirements, as well as solid film lubricants and design specifications for screw threads and fastener assembly requirements.
Reference
Number | Title |
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AS291 | Surface Texture, Roughness, Waviness and Lay |
AS470 | DRIVE-ACCESSORY, 10″ BOLT CIRCLE |
AS472 | FLANGE-ACCESSORY, 8″ BOLT CIRCLE |
AS517 | ADAPTER 8” TO 5” BOLT CIRCLE |
MIL-S-7742 | This document is not part of the subscrption. |
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