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In lots of ways brand new Cougar is different from the other several white twins

Posted By: |Posted In: asya-tarihleme gözden geçirmek | April 19, 2022 | No Comment

In the gross along with you to definitely partner feathered, an effective Cougar often go 50 fpm in the 4,250 ft, limitation, less than standard criteria

Unlike that have lapped and you may riveted peels, The latest Cougar’s is actually fused to your bulkheads and you may ribs building its fuselage, empennage and you will wings The result is good slicker airframe, a significantly convenient appearance and, as reported by customers, less difficulties with rust. At the same time, the low portions of your own cabin fuselage are manufactured from good however, smaller aluminium honeycomb. But the biggest differences is, needless to say, the Cougar’s 160-horsepower Lycoming 0-320 engines. Brand new Duchess and you will Seminole possess 180-hp O-360s. There is also counter-rotating propellers, hence get rid of the important-engine bugbear. Each of the fresh Cougar’s props change clockwise; for this reason, an effective airplane pilot theoretically need to have a more difficult time writing about an effective failure of your kept (critical) motor, just like the right prop takes a more impressive bite and you can produces much more asymmetric thrust than the leftover.

The newest Cougar, Duchess and you may Seminole are much equivalent in one single urban area: single-system efficiency. Every about three manage miserably once dropping a system to your takeoff. The new Cougar POH implies that, from the sea-level to your a standard big date and also at its gross pounds from step 3,800 pounds, the fresh new jet have a tendency to ascend at about two hundred fpm using one motor, if for example the airplane pilot does everything you best (cobs the favorable engine, feathers the fresh bad, has the technology and flaps up, etc).

In requirements intricate over, the fresh plane will struggle upwards only 140 foot each kilometer they travels along side ground. Due to their 180-hp motors, the fresh Duchess and you may Seminole never carry out much better. Its unmarried-system prices-of-climb and you may climb up gradients is, respectively: 235 fpm and you may 166 legs for each mile; and 217 fpm and 148 foot per distance. You to meager results appear less than simple requirements; eradicate a system in virtually any of your planes into takeoff of Denver for the a hot date, plus the quantity almost certainly would have negative signs in front of her or him.

In contrast, the solitary-system provider ceilings of one’s Duchess 100 Гњcretsiz Asya TanД±Еџma Siteleri and you may Seminole are six,170 base and you will 4,a hundred legs, correspondingly. A good Manners But it does not succeed on one motor, the brand new Cougar keeps a good manage characteristics,due to a huge the quantity to the airplane’s huge tail. Vmca, the minimum manage price with a motor away, are 61 tangles-a couple of knots lower than appears rate which have obtaining apparatus and you will flaps stretched. Stall strips with the best edges of your own modified laminar-disperse NACA 63A-415 side result in the wing origins to stall a long time before the fresh new hps

In the event the an effective 2 hundred-fpm rate of climb cannot voice all that crappy, look at the Cougar’s unmarried-engine performance another way: which is, in terms of go gradient

We had been offered a demonstration of your Cougar’s docile ways by the Gil Stout off Traveling Tigers from inside the Marietta, Pa., an old Grumman agent whoever specialization nevertheless is Cougar conversion process and you can provider. On 1,five-hundred feet towards the a loving big date, Stout closed best engine, feathered the fresh new prop making good 4

degree become the new deceased system. No problem. Up coming, he pulled brand new nostrils way up. New appears buzzer shrieked given that Cougar shook particularly. really, a wet pet. One to side decrease, then the other; but Stout managed to pick them up towards rudder whenever. At the same time, we had been sinking around five hundred fpm; however,, in the demo, the airplanes never ever offered one indication it absolutely was planning to make a move sexy. Due to limited lift traveling, it is difficult so you’re able to appears a great Cougar instead of abrupt manage deflection. Discover a trade-off, however. According to residents, a good airplane pilot and then make a power out-of landing with complete flaps in a plane loaded towards their the front chairs. send cg limit normally use up all your elevator power on flare and you will plunk upon all the three tires, particularly when airspeed was a tad too on top of means.

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