A Newtown man convicted of killing his wife and shredding her body with a wood chipper was sentenced today to 50 years in prison after his sister complained he had shown no remorse.

The man, Richard B. Crafts, a former airline pilot, told Judge Martin L. Nigro of Superior Court that he had been wrongly portrayed as a cold-blooded killer, but he did not address whether he had killed his 39-year-old wife, Helle Crafts, a flight attendant and mother of three.

''A great deal has been said about my apparent lack of emotion: 'He has ice water in his veins,' '' Mr. Crafts, 51, said before sentence was imposed. ''I have feelings like everyone else.''

Mr. Crafts was convicted of murder in November after his second trial. Karen Rodgers, Mr. Crafts's sister, who has custody of the couple's three children, urged Judge Nigro to impose the maximum sentence.