In a variety of ways the brand new Cougar is different from additional a couple of light twins
At the terrible sufficient reason for you to fan feathered, a good Cougar usually climb fifty fpm at the cuatro,250 ft, maximum, lower than basic standards
As opposed to which have lapped and you may riveted skins, Brand new Cougar’s is actually bonded on bulkheads and ribs forming its fuselage, empennage and you can wings As a result, a slicker airframe, a much easier looks and, as outlined by customers, a lot fewer complications with corrosion. While doing so, the reduced portions of your cabin fuselage are manufactured from good but lightweight aluminum honeycomb. But the biggest change was, naturally, this new Cougar’s 160-horsepower Lycoming 0-320 engines. The fresh new Duchess and you may Seminole have 180-hp O-360s. There is also avoid-spinning propellers, and that get rid of the critical-system bugbear. Both of brand new Cougar’s props turn clockwise; ergo, a good airplane pilot technically should have a harder date making reference to an excellent incapacity of one’s left (critical) engine, since correct prop requires more substantial chew and supplies a great deal more asymmetric thrust compared to the kept.
The latest Cougar, Duchess and you may Seminole tend to be the same in one single town: single-engine abilities. All the three create miserably after dropping an engine toward takeoff. The Cougar POH reveals that, within sea level with the a standard time and at the gross pounds away from step 3,800 pounds, the fresh new jet commonly go up around 200 fpm on one motor, if your airplane pilot does everything proper (cobs the good engine, feathers the brand new crappy, has got the apparatus and you can flaps up, etc).
In standards detail by detail significantly more than, the jet have a tendency to battle right up just 140 legs per kilometer it travel across the soil. Along with their 180-horsepower motors, the latest Duchess and Seminole usually do not carry out best. Their solitary-system rates-of-go and you may climb gradients is, respectively: 235 fpm and you may 166 foot for each distance; and 217 fpm and you may 148 foot each distance. You to meager efficiency appear significantly less than standard conditions; treat a system in just about any of your planes toward takeoff away from Denver on an attractive day, and quantity almost certainly will have negative signs in front of them.
Compared, the new unmarried-motor provider ceilings of the Duchess and Seminole was 6,170 foot and cuatro,a hundred base, respectively. A good Manners However it does not work on dating bolivian woman a single motor, the brand new Cougar has actually good control characteristics,due to a giant extent to the airplane’s grand end. Vmca, the minimum control rates that have an engine away, is 61 tangles-a couple of tangles less than stands rates which have landing resources and you may flaps stretched. Appears pieces toward top sides of modified laminar-flow NACA 63A-415 wing cause the side sources to help you appears a long time before the brand new hps
If an effective 200-fpm rate-of-climb does not sound all of that crappy, check out the Cougar’s single-motor show another way: that’s, when it comes to climb gradient
We were given a presentation of one’s Cougar’s docile manners of the Gil Stout off Traveling Tigers during the Marietta, Pa., a former Grumman specialist whoever specialization nonetheless become Cougar sales and you will services. Within step 1,five-hundred foot toward a loving time, Stout closed the best system, feathered the fresh prop making an effective cuatro
degree grow to be this new lifeless motor. Nothing wrong. After that, the guy pulled brand new nose way-up. New stands buzzer shrieked once the Cougar shook for example. better, a wet pet. That wing fell, then your other; however, Stout managed to get them towards the rudder when. At the same time, we were sinking around 500 fpm; but, in the trial, the new airplane never provided any indication that it was planning to make a move sexy. Due to restricted elevator travel, it is sometimes complicated in order to stands a beneficial Cougar in the place of sudden manage deflection. There’s a trade-off, yet not. Centered on residents, an excellent pilot and come up with a power away from getting having full flaps inside the an airplane stacked into their the front seats. give cg limit can be lack lift expert regarding the flare and you will plunk down on all around three rims, particularly if airspeed are a touch too at the top of means.