In the disgusting along with one lover feathered, an effective Cougar tend to go up fifty fpm during the cuatro,250 foot, limit, under important criteria
As opposed to which have lapped and riveted skins, The fresh new Cougar’s is fused into bulkheads and you may ribs developing their fuselage, empennage and you can wings As a result, a beneficial slicker airframe, a much easier looks and you can, as outlined by residents, less difficulties with rust. Likewise, the low servings of the cabin fuselage are produced from good but tiny aluminium honeycomb. Nevertheless the greatest huge difference was, of course, new Cougar’s 160-horsepower Lycoming 0-320 motors. The newest Duchess and you can Seminole has 180-horsepower O-360s. They likewise have counter-rotating propellers, which take away the critical-engine bugbear. All of the brand new Cougar’s props turn clockwise; for this reason, a pilot technically need to have a harder time referring to an excellent incapacity of your kept (critical) motor, as the right prop takes a bigger chew and you will provides significantly more asymmetric thrust compared to the remaining.
The fresh new Cougar, Duchess and you will Seminole tend to be the same in one town: single-motor overall performance. All of the three would miserably just after shedding an engine to your takeoff. This new Cougar POH demonstrates, on sea-level on the a fundamental go out at the terrible weight out-of 3,800 weight, brand new jet often go at about 200 fpm using one system, in the event the airplane pilot do that which you proper (cobs the nice motor, feathers the brand new bad, contains the tools and you will flaps right up, and stuff like that).
According to the standards in depth over, brand new flat usually challenge right up only 140 legs each mile it excursion across the soil. Employing 180-hp engines, this new Duchess and you can Seminole try not to would much better. The solitary-system rates-of-climb and rise gradients was, respectively: 235 fpm and you can 166 foot per distance; and you can 217 fpm and you may 148 foot for every mile. One meager results arrives around simple requirements; cure an engine in any of the airplanes on takeoff out of Denver toward a hot go out, while the number likely could have negative signs before her or him.
In comparison, the new solitary-engine provider ceilings of one’s Duchess and Seminole are six,170 foot and you will cuatro,100 legs, respectively. An excellent Manners Although it does maybe not succeed on a single system, the brand new Cougar keeps an effective manage characteristics,due to a large the total amount to the airplane’s huge tail. Vmca, the minimum handle rates which have a motor out, was 61 knots-two tangles less than stands price that have getting technology and you can flaps expanded datingmentor.org/escort/cleveland. Stall strips on the leading corners of modified laminar-move NACA 63A-415 wing result in the wing root so you can stall well before the brand new hps
In the event the a great two hundred-fpm rate-of-climb will not voice all of that bad, think about the Cougar’s unmarried-system results another way: that’s, with respect to go gradient
We were considering a speech of Cougar’s docile ways by the Gil Stout off Flying Tigers for the Marietta, Pa., a former Grumman broker whose specialization nevertheless tend to be Cougar sales and you may provider. At step one,500 feet toward a warm big date, Stout turn off just the right motor, feathered the new prop and made a great cuatro
studies grow to be the newest dead system. No problem. Then, he drawn new nose way-up. Brand new appears buzzer shrieked while the Cougar shook particularly. better, a rainy pet. One to side decrease, then your most other; however, Stout were able to get them for the rudder when. Meanwhile, we were sinking at about five-hundred fpm; but, in the trial, the latest flat never ever provided one signal it was going to take action nasty. Due to minimal elevator travel, it is difficult so you can stall good Cougar in place of sudden handle deflection. There’s a trade-off, however. Predicated on residents, an effective pilot and then make an electricity off getting having full flaps when you look at the a plane stacked for the their the front seating. pass cg limitation normally lack lift power from the flare and you can plunk down on every around three tires, particularly when airspeed is a tad too high on method.
