The Rolls-Royce share price climbed by more than 5% on Thursday after the engineering group a sharp increase in first-half profit and raised its full-year outlook well above market expectations. Rolls Royce share price (Source: Google Finance)The rally followed a strong set of financial results. Rolls-Royce Raises Full-Year OutlookRolls-Royce now expects to generate between £4.7 billion and £4.9 billion in underlying operating profit for the full year. (Source: London Stock Exchange)The scale of the upgrade seems to be the main reason for the positive Rolls-Royce share price reaction. The higher profit forecast, stronger cash generation and improving performance across all divisions helped push the Rolls-Royce share price higher.