LOS ANGELES (AP) _ Net income at defense contractor Northrop Grumman Corp. jumped 13 percent in the second quarter, reflecting increased sales from the acquisition of TRW Inc., the company said Monday.

The aerospace and weapons firm reported earnings of $205 million, or $1.08 per share, for the quarter ended June 30, compared to $182 million, or $1.53 per share in the same period last year.

The company's outstanding shares increased to 184.4 million, from 114.8 million during the same period last year.

Revenue jumped 57 percent to $6.63 billion from $4.23 billion in the same period last year, mainly due to revenue from its newly added mission systems and space technology segments.

Northrop reported a $140 million pension expense in the quarter, compared with pension income of $22 million in the same period last year.

Excluding pension income and other charges, the company reported operating earrings of $207 million, or $1.09 per share in the second quarter, compared with $181 million, or $1.52 per share, for the same period last year.

Analysts at Thomson First Call has been expecting earnings of 86 cents per share.

Contract acquisitions increased 36 percent to $5.2 billion during the quarter, up from $3.8 billion in the same period last year, Northrop said.

Northrop increased its guidance for full-year operating earnings to a range of $4 to $4.25 per share, up from previous estimates of between $3.80 and $4.20 per share. Sales are expected to be between $25 billion and $26 billion, the company said.

Shares of Northrop Grumman rose $4.67 per share, or 5.4 percent, to $91.77 in midday trading on the New York Stock Exchange.

For the first six months of the year, Northrop reported net income of $458 million, or $2.42 per share, compared to a loss of $101 million, or 99 cents per share, in the same period last year.

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On the Net:

Northrop Grumman Corp.: http://www.northropgrumman.com