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Nice bit of info: I believe Cessna Caravans can reverse their propellor thrust while making a dive to keep it below overspeed limits, this is why they can dive (almost) vertically.air-bus wrote:I made a skydive myself once, a great experience! I see the PH-JMP making a very steep descent very often, it reaches the ground earlier than the parachutists comming out of it! Nice pics!
If that is true, nice feature, but i think also a bit dangerous; what if the prop thrust stays in reverse and won't go back to idle? That must mean an almost 100% chance of disaster!kiwi wrote:Nice bit of info: I believe Cessna Caravans can reverse their propellor thrust while making a dive to keep it below overspeed limits, this is why they can dive (almost) vertically.
If, If, in aviation it is "normal" that alars bells gonna ring. Offcourse it is better that it didn't happen but it is a sign for the pilot to not continue his/her current setting. The propeller pitch is controlled by a so called governer system which regulates the pitch by hydraulic mechanical power. This governers reacts to the speed of the propeller. To keep it short, a momentum is created in a governor this mechanical device reacts directly to changes of the propeller. To keep the propeller speed constant it changes the pitch by hydraulic power. This is why this type of governer is also known as constant speed drive.air-bus wrote:If that is true, nice feature, but i think also a bit dangerous; what if the prop thrust stays in reverse and won't go back to idle? That must mean an almost 100% chance of disaster!kiwi wrote:Nice bit of info: I believe Cessna Caravans can reverse their propellor thrust while making a dive to keep it below overspeed limits, this is why they can dive (almost) vertically.
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