5990-00-444-6987

Control Transformer Synchro email this page

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Picture of NSN 5990-00-444-6987

Model or part number: M20708/1-02E

Stock Availability  condition code chart

This product is available in the following quantities and conditions.

  • NS: 8
  • SV: 1
  • NE: 4
  • OH: 1

Total: 14 Note: Availability of this item was last updated 04/30/2024, and may have changed since then. Request a quote for up to date pricing and availability.

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Description

Control Transformer Synchro NSN 5990-00-444-6987. Synchro control

pdf NSN 5990-00-444-6987 Datasheet

MRC:
The basic material of which the body is fabricated.AAFZ
Body Material:
Steel, corrosion resisting
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the body.AAQL
Body Style:
Standard round c
MRC:
The length of a straight line which passes through the center of a shoulder,and terminates at the circumference.AAVH
Shoulder Diameter:
Between 0.0995 inches and 1.0000 inches
MRC:
The length of a straight line which passes through the center of that portion used to guide the item and terminates at the circumference.AAVL
Pilot Diameter:
Between 0.6245 inches and 0.6250 inches
MRC:
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.ABHP
Overall Length:
2.2240 inches
MRC:
The length of a straight line which passes through the center of a flange,and terminates at the circumference.ABKK
Flange Diameter:
Between 1.0615 inches and 1.0620 inches
MRC:
A measurement of the smallest dimension of a flange,in distinction from length or width.ABKU
Flange Thickness:
0.0930 inches
MRC:
None.ABPA
Undercut Diameter:
0.9750 inches
MRC:
None.ABPC
Undercut Width:
0.0620 inches
MRC:
The length of a straight line which passes through the center of a shaft,and terminates at the circumference.ABWV
Shaft Diameter:
0.1195 inches single shaft and 0.1200 inches single shaft
MRC:
A measurement of the longest dimension of the shaft,in distinction from width.ABXF
Shaft Length:
0.3680 inches single shaft
MRC:
The maximum permissible temperature increase in the item as a result of its operation under normal conditions.AHCG
Maximum Tempurature Rise:
10.0 degrees celsius
MRC:
An alpha and/or numeric designation indicating the size by which the body is identified.AJSL
Body Size:
11
MRC:
The value of the primary excitation voltage for which the stator is rated,expressed in volts.AJSN
Stator Input Voltage Rating In Volts:
90.0
MRC:
The value of the primary excitation current for which the stator is rated,with rotor /secondary/ circuit open.AJSP
Stator Input Current Rating:
18.0 milliamperes
MRC:
The value of the primary /electrical/ excitation power for which the stator is rated.AJSQ
Stator Input Electrical Power Rating:
20.0 watts
MRC:
The cycles per second /hertz/ of the alternating current.AJSS
Frequency In Hertz:
400.0
MRC:
The magnitude part /z/ of the stator impedance with the rotor open /zso/,expressed in ohms.AJTJ
Zso Impedance Magnitude In Ohms:
Between 4350.00 and 5700.00
MRC:
The angle part /o/ of the stator impedance with the rotor open /zso/,expressed in degrees.AJTK
Zso Impedance Angle In Deg:
Between 77.30 and 83.50
MRC:
The magnitude part /z/ of the rotor impedance with the stator shorted /zrs/,expressed in ohms.AJTL
Zrs Impedance Magnitude In Ohms:
Between 585.00 and 700.00
MRC:
The angle part /o/ of the rotor impedance with the stator shorted /zrs/,expressed in degrees.AJTM
Zrs Impedance Angle In Deg:
Between 22.00 and 32.00
MRC:
The difference between the phase time of two or more voltages or currents of the same frequency,at the same instant of time,expressed in degrees.AJVF
Phase Shift Angle In Deg:
5.000 input to output
MRC:
The maximum voltage,without harmonics,induced in the secondary circuit at the null angle rotor position,expressed in millivolts per volt.AJVG
Maximum Fundamental Null Voltage In Millivolts Per Volt:
32.00 output
MRC:
The maximum voltage,including harmonics,induced in the secondary circuit at the null angle rotor position,expressed in millivolts per volt.AJVH
Maximum Total Null Voltage Output In Millivolts Per Volt:
60.00
MRC:
The limits of permissible deviation in angular arc error from electrical zero,expressed in minutes.AJVL
Electrical Error Angular Range In Minutes:
-7.0/+7.0
MRC:
The number of holes provided for aligning the item.AJVW
Alignment Hole Quantity:
4
MRC:
A measurement of the longest dimension of a pilot,in distinction from width.AJWQ
Pilot Length:
0.0620 inches
MRC:
None.AJWR
Shoulder Length:
0.0620 inches
MRC:
None.AJWX
Mounting Surface To Terminal End Distance:
1.8010 inches
MRC:
Indicates the location of the terminal/s/ on the item.CQTM
Terminal Location:
Rear
MRC:
None.CQZS
Shaft Slot Depth:
0.0250 inches single shaft
MRC:
None.CRHN
Shaft Slot Width:
0.0200 inches single shaft
MRC:
Indicates the type of shaft included on the item.CRSJ
Shaft Type:
Round, slotted single shaft
MRC:
None.CRSY
Alignment Hole Depth:
0.1120 inches
MRC:
The ratio of the output voltage to the input voltage at maximum coupling.CSJY
Transformation Ratio:
0.735 rotor to stator
MRC:
None.CTCW
Alignment Hole Bolt Circle Diameter:
0.8120 inches
MRC:
The specification,standard,drawing,or similar instrument that specifies environmental and performance requirements or test conditions under which an item is tested and establishes acceptable limits within which the item must conform identified by an alphabetic and/or numeric reference number. includes the commercial and government entity (cage) code of the entity controlling the instrument.TEST
Test Data Document:
81349-mil-s-20708 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
MRC:
Indicates the type and number of terminals for providing electrical connection.TTQY
Terminal Type And Quantity:
5 wire lead
MRC:
--
NIIN:
004446987
MRC:
--
NATO Stock Number:
5990-00-444-6987
MRC:
--
Shelf Life:
N/A
MRC:
--
UOM:
--
MRC:
--
DEMIL:
No
FIIG:
--
FIIG:
A07800
MRC:
--
INC:
15289
MRC:
--
IMM:
TX
Certified products icon

All Products Certified

Factory New, New Material, New Surplus, Overhauled, Serviceable, Repairable, and AS Removed / Used material will be accompanied by a Certificate of Conformance, and any other documents/trace when applicable. We have a 7 year record retention.

Quality inspections icon

Quality | ISO 9001:2015 + AS9120B

We are committed to quality and follow an AS9120 quality management system. AeroBase Group is HAZMAT certified and registered with DDTC, ITAR, and Aviation Suppliers Association (ASA). All products are 100% inspected.

Quality Commitment »

Shipping icon

Shipping

Delivery of IN-STOCK orders ship same-day when order is placed before 2:00 PM EST.

Delivery dates for NON-STOCK items are estimates based on current backlog and are subject to confirmation at the time of order.

Formal Definition

Government issue definition of NSN 5990-00-444-6987

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.

Packaging & Dimensions

MIL-STD codes: http://www.dla.mil/LandandMaritime/.../MILSTD2073Codes.aspx
Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.3000lbs
Item Weight:
--
Item Dim:
--
Container
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
LVL C
Container:
--
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q
LVL_C:
U
CUSH
MOP
CATEG.
PRES MAT
WRAP MAT
ICQ
THK
TOS
UCL
CUSH DUN:
DA
MOP:
51
PKG:
69F0
PRES MAT:
00
WRAP MAT:
FA
ICQ:
AAA
THK:
X
TOS:
UCL:

Packaging Codes Definitions:

LVL A Code (LVL_A) Q

Packing shall be accomplished in accordance with table c.Ii for the packing level specified. closure, sealing and reinforcement shall be in accordance with applicable specification for shipping container.

LVL B Code (LVL_B) Q

Packing shall be accomplished in accordance with table c.Ii for the packing level specified. closure, sealing and reinforcement shall be in accordance with the appropriate shipping container specification.

LVL C Code (LVL_C) U

Items or packages that require packing for acceptance by the carrier shall be packed in exterior type shipping containers in a manner that will ensure safe transportation at the lowest rate to the point of delivery and shall meet, as a minimum, the requirements of the following rules and regulations, as applicable to the mode(s) of transportation to be utilized: (a) postal regulations, (b) department of transportation regulations, (c) civil air regulations, (d) uniform freight classification rules, (e) national motor freight classification rules, (f) american truckers' association rules, (g) other applicable carriers' rules, (h) military air regulations for dangerous materials. consolidation of shipments. all exterior packs of 1.5 cubic feet or less having no single dimension (length, width, height) exceeding 40 inches (and when the total number of such containers in any individual shipment exceeds 25), shall be consolidated, using flat pallets, box pallets, or containers as the consolidating media. dangerous goods shall be prepared for shipment according to applicable department of transportation (dot) regulations and international regulations in effect at time of shipment. shipment by parcel post must comply with postal regulations.

Procedure Indicator Code (OPI) O

Options can be exercised as to specific method of preservation or dod approved packaging materials to be used. however, basic preservation method shall be retained, supplemental data shall be complied with, and unit package dimensions shall not be increased by more than one inch. equal or better protection shall be given the item and there shall be no increase in the package cost.

Special Markings Code (SPC_MKG) 00

No special marking.

Method of Preservation (MOP) 51

Watervaporproof bag, sealed.

Cushion Material (CUSH) DA

A-a-1051, paperboard cushioning.

Preservation Material (PRES_MAT) 00

No requirement.

Import / Export

Schedule B Classification
Schedule B Number
NAIC National Association of Insurance Commissioners
End Use A classification system for U.S. exported and imported merchandise based on principal use rather than the physical characteristics of the merchandise. End-Use codes are assigned by the Bureau of Economic Analysis under the U.S. Department of Commerce.
SITC Commodity classification system defined by the United Nations.
USDA
HITECH
Schedule B:
9014900000
NAICS:
334511
End Use Class:
22220
SITC:
87412
USDA:
1
HITECH:
0

Schedule B Codes Definitions:

Schedule B 9014900000

Parts & Accessories For Direction Finding Compasses and Other Navigational Instruments and Appliances

End Use Code 22220

Marine Engines, Parts

Standard Intl. Trade Class (SITC) 87412

Parts and Accessories Of Navigational Instruments and Appliances

Freight

Universal / National freight and handling information
NMFC
Class
UFC
LTL
LCL
WCC
TCC
SHC
ADC
ACC
NMFC:
062120
NMF Description:
Generators/motors/parts Noi
UFC:
34760
LTL:
Rating variable
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ADC:
A
ACC:
V

Freight Codes Definitions:

Cargo Type (TCC) Z

No special type of cargo code applicable.

Water Commodity (WCC) 593

Motors and parts, (machinery and parts),(less than 35 feet).

Air Commodity (ACC) V

Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing.

Air Dimensions (ADC) A

Shipment is not a consolidation and does not exceed 84 inches in any dimension.

Air Special Handling (SHC) 9

Other or no special handling required (sh)

Manufacturers

This NSN is registered to the following cage codes.
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