To: Rocket Red who wrote (167969 ) 7/5/2009 9:04:49 PM From: E. Charters Respond to of 312719 I wonder if they named their company for the Pinetree Radar Line, the obsolete early system of CDN post-war of radar that went in before the DEW Line, or Distant Early Warning radar system. The Pinetree stations have a line you can often drive too, and some of their stations are near gold camps in Northern Ontario. If that were the association, then they are thinking old gold not too far out before it arrives at market target! I once had a Cavity Magnetron from a Pinetree Radar. Cavity Magnetron This device is the radar receiver amplifier. The diameter and spacing of the holes spaced around the center tells you the frequency and therefore the resolution of the Radar. The minimum length of a reflector edge line that it may resolve. Props, wing tips, leading edges, and any three-dimensionally straight line you could draw on a curved surface, times the sine of the angle of beam incidence has this length character of reflectivity. It reflects by Snell's law back to source. The Dieppe Raid objective was to steal a similar part from a German Radar base nearby the town, in order to learn how to block the German radar systems with the right length of chaff. (strips of tin foil in bunches that form a dispersive reflector when air launched.) Tin foil of the right length has tendency to scatter radar reflections and blind the system. It is still used to this day. Trading can be chaff. You have to step back, get a long term track to target and the probability of remaining airborne on the analyst's pathfinder vector, given the selling-flack ack-acking out Ms. market and her 88's. (German anti aircraft gunners were often female. Their aiming systems were based on a combination of infrared and radar. If they had cooled the bomber engines and exhaust, painted the planes with aluminum dust containing paint and made the bottom of the aircraft completely flat, it would have helped. Putting the prop in a flat bottomed nacelle would have foiled radar as well. It was partly for this reason that English high flying night bombers did not heat their aircraft so as not to provide an infrared signature. (heat exchangers on the exhaust would not have added that much weight.) Many times the crew froze to death on the home trip, as the temp is about 40 below zero at the altitude. A frequent casualty of this was the ball turret gunner in B17's. Germans had the same problem, and had to experiment to find a way to keep pilots can crew warm. The7 found out that wool lined caps, felt or wool mitts, felt boots and kidney 'warmers' were most important. As long as you kept certain high surface area body regions warm, the rest of the body was insignificant in heat loss. The P51 with its drop tanks enabled B17's to achieve deep targets. If we could send some P51's into occupied Mexico to learn the target size and hit rate probability we would have a better chance of getting the fleet through over ground zero at optimum elevation. Frederick Banting, the discoveror of injectable insulin for diabetics was one of the most important war time researchers into systems to aid flyers. He developed the g-suit that enabled pilots in fighter planes to make high G turns without passing out. Over OGR Target Range. Closing in on Enemy Ore Body. EC<:-}