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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 J7qV9D2ezlSme1/gYSxOgS2C51ZMwNIVfl3AkuXAENz4etV5Fa/cM4TkI7WYL8Cn
 VrmqPTGn5w2l69TM0UaM1g==

<SEC-DOCUMENT>0001387311-08-000033.txt : 20080709
<SEC-HEADER>0001387311-08-000033.hdr.sgml : 20080709
<ACCEPTANCE-DATETIME>20080709090709
ACCESSION NUMBER:		0001387311-08-000033
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080707
FILED AS OF DATE:		20080709
DATE AS OF CHANGE:		20080709

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DRS TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000028630
		STANDARD INDUSTRIAL CLASSIFICATION:	SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL SYS [3812]
		IRS NUMBER:				132632319
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	BUSINESS ADDRESS:	
		STREET 1:		3RD FLOOR
		STREET 2:		5 SYLVAN WAY
		CITY:			PARSIPPANY
		STATE:			NJ
		ZIP:			07054
		BUSINESS PHONE:		9738981500

	MAIL ADDRESS:	
		STREET 1:		3RD FLOOR
		STREET 2:		5 SYLVAN WAY
		CITY:			PARSIPPANY
		STATE:			NJ
		ZIP:			07054

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIAGNOSTIC RETRIEVAL SYSTEMS INC
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCHNEIDER RICHARD A
		CENTRAL INDEX KEY:			0001201288

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08533
		FILM NUMBER:		08944008

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		9738981500

	MAIL ADDRESS:	
		STREET 1:		DRS TECHNOLOGIES, INC.
		STREET 2:		5 SYLVAN WAY
		CITY:			PARSIPPANY
		STATE:			NJ
		ZIP:			07054
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-07-07</periodOfReport>

    <issuer>
        <issuerCik>0000028630</issuerCik>
        <issuerName>DRS TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>DRS</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001201288</rptOwnerCik>
            <rptOwnerName>SCHNEIDER RICHARD A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>DRS TECHNOLOGIES, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>5 SYLVAN WAY</rptOwnerStreet2>
            <rptOwnerCity>PARSIPPANY</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07054</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Exec VP, CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-07-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>909</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>78.48</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23548</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes: 4,508 shares of restricted stock granted on June 16, 2006 that vest on June 16, 2009; 5,985 shares of restricted stock granted on June 15, 2007 that vest on June 15, 2010; and 40 shares held jointly with wife.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Richard A. Schneider</signatureName>
        <signatureDate>2008-07-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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