At 2150 central time, a Cessna 152 lost engine power while on approach to Crystal Airport and was damaged in the forced landing that followed. Neither occupant was injured. The pilot said the flight departed Crystal with no less than 20 gallons of fuel at about 1815. They planned to make a sightseeing flight and a few landings at Cloquet Carlton County Airport, which the pilot estimated would take 2.5 hours with the forecast winds aloft of 5 to 15 knots. However, on the return flight they encountered headwinds of 40 knots and the airplane ran out of fuel.