From the gross sufficient reason for you to definitely partner feathered, a Cougar commonly climb fifty fpm at 4,250 base, limitation, below fundamental standards
In the place of which have lapped and you may riveted skins, The latest Cougar’s is bonded towards the bulkheads and you may ribs developing their fuselage, empennage and you can wings The result is an excellent slicker airframe, a much smoother appearance and you can, as reported by owners, fewer issues with rust. Likewise, the reduced servings of cabin fuselage are manufactured from strong however, lightweight aluminum honeycomb. However the most significant huge difference is, needless to say, brand new Cougar’s 160-horsepower Lycoming 0-320 motors. This new Duchess and you may Seminole enjoys 180-hp O-360s. There is also restrict-rotating propellers, and therefore get rid of the vital-system bugbear. Both of the fresh new Cougar’s props change clockwise; therefore, a pilot commercially should have a harder date making reference to a great failure of the kept (critical) system, because proper prop takes a larger chew and you will produces so much more asymmetric push as compared to kept.
The Cougar, Duchess and you can Seminole tend to be exactly the same in one single town: single-motor abilities. All of the around three create miserably just after shedding a motor to the takeoff. The latest Cougar POH shows that, on sea level for the an elementary date as well as their disgusting weight from step 3,800 lbs, new planes commonly go up around two hundred fpm on a single motor, if for example the airplane pilot do everything best (cobs the nice engine, feathers the new crappy, has got the apparatus and you may flaps right up, and stuff like that).
According to the requirements intricate more than, new flat will struggle upwards a mere 140 ft for each kilometer they excursion over the ground. Employing 180-hp engines, the fresh Duchess and you will Seminole dont perform much better. Their solitary-motor pricing-of-climb and you will rise gradients was, respectively: 235 fpm and you can 166 legs for each and every distance; and you will 217 fpm and you will 148 ft for every single distance. You to meager results happens around fundamental requirements; lose a motor in any of one’s planes to the takeoff from Denver with the a hot go out, plus the quantity probably might have bad signs facing them.
In comparison, the newest solitary-engine solution ceilings of your own Duchess and you can Seminole is 6,170 foot and you can 4,100 legs, respectively. A Manners Although it does maybe not perform well on one system, brand new Cougar provides good control features,because of a giant the amount towards airplane’s huge end. Vmca, minimal control rate which have an engine aside, is actually 61 tangles-two knots less than stall speed having obtaining equipment and flaps prolonged. Appears pieces towards best edges of one’s modified laminar-disperse NACA 63A-415 wing result in the wing roots so you’re able to stands well before brand new hps
In the event that an excellent two hundred-fpm rate of climb does not sound all that crappy, consider the Cougar’s solitary-engine abilities one other way: that is, regarding ascend gradient
We were considering a speech of your Cougar’s docile manners by the Gil Stout out of Traveling Tigers in Marietta, Pa., a former Grumman agent whoever areas of expertise still include Cougar transformation and solution. At the 1,five hundred foot for the an enjoying big date, Stout closed just the right motor, feathered the new prop making good 4
studies grow to be brand new dead motor. No problem. Up coming, the guy taken the fresh nostrils way-up. The fresh new appears buzzer shrieked since the Cougar shook such as for example. well, a wet pet. You to wing dropped, then your other; but Stout was able to pick them up towards the rudder when. At the same time, we had been sinking around five-hundred fpm; however,, on demo, the newest airplanes never gave one signal it was planning to do something slutty. Due to minimal elevator travelling, it is sometimes complicated to appears a Cougar instead abrupt handle deflection catholic chat room. You will find a trade off, however. Considering owners, a great airplane pilot and work out an energy out of getting which have full flaps in a plane loaded toward the the front seats. pass cg limitation can be run out of elevator power on flare and you can plunk down on most of the about three wheels, particularly if airspeed is a touch too on top of method.