SAE AS 20708B:2014 pdf free download – (R) Synchros, General Specification For
1 .2.1 Nomenclature
The nomenclature shall consist of the item name, followed by a type designation including a modification letter and a military part number. All synchros having the same design nomenclature shall be physically, mechanically, and electrically interchangeable for all military applications. The type designation shall be indicated by a combination of digits and letters. The type designation of 26-V synchros shall be preceded by “26V”. The complete nomenclature of a size 1 5, 1 1 5-V, 400-Hz Synchro Transmitter is illustrated in Table 1 . Nomenclature for new synchro types will be assigned by the Naval Air Systems Command, Department of the Navy.
1 .3 Illustration
A synchro classified as 1 5CX4D – M20708/1 4-01 D (see Table 1 ) indicates the third modification to the original design of a 1 1 5-V, 400-Hz synchro control transmitter whose body diameter is greater than 1 .40 inches but not greater than 1 .50 inches, and the military part number specifies that this synchro has a splined shaft and terminal connections. A 26-V synchro classified as 26V-1 1 TX4C – M20708/ 6-01 C indicates the second modification to the original design of a 26-V, 400-Hz synchro torque transmitter whose body diameter is greater than 1 .00 inch but not greater than 1 .1 0 inches, and the military part number specifies that this synchro has a splined shaft and terminal connections.
2. APPLICABLE DOCUMENTS
The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.
2.5 Order of Precedence
Unless otherwise noted herein or the contract, in the event of a conflict between the text of this document and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this document, however, supersedes applicable laws and regulations, unless a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Specification Sheets
The individual item requirements shall be as specified herein, MIL-DTL-81 963, and in accordance with the applicable specification sheets. In the event of any conflict between requirements of MIL-DTL-81 963, this specification, and the specification sheet, the latter shall govern.
3.2 Qualification
Synchros furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.5 and 6.4). 3.3 First Article When a source for a qualified product is not available and first article inspection is required by the contracting activity, a sample shall be subjected to first article inspection in accordance with the requirement of the applicable specification sheet (see 3.1 , 4.6, and 6.3).