Twins in an Ever-Changing Business Aviation World, Turboprops
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Textron is betting big 16 with the Cessna Denali that turboprops have a solid future. Twins Dornier Seastar After several years of uncer- tainty, the centerline push-pull, all-composite amphibian twin appears back on track after the Dornier family formed a new joint venture (Dornier Seawings) to manufacture the aircraft with China’s Wuxi Industrial Development Group and the Wuxi Communications Industry Group. It then struck a deal in February this year for component airframe parts for the first 10 aircraft to be manu- factured at Diamond Aircraft’s by Mark Huber plant in London, Ontario, and shipped to Dornier Seawings in 16 Oberpfaffenhofen, Germany, In an ever-changing business aviation world, turboprops for final assembly. Produc- represent timeless value in a steady market segment. tion eventually will be shifted to China. The interior of the Seastar Perhaps it is appropriate that things do not move very fast in the turboprop segment. Consider this: can be tailored to many dif- the Dornier Seastar first flew in 1984, was certified in 1991 and apparently will at last enter production ferent operations: personal, later this year. Or that Cessna, after dipping its toes in the pressurized turboprop single market for the commercial, government or better part of a decade, finally decided to jump into the pool this year—with the Denali—and likely will corporate missions. It fea- tures a light and spacious have an aircraft to customers by 2020. Or India’s NAL Saras. After three decades of development, two cabin that can be equipped flying prototypes and reportedly nearly half a billion dollars, the Indian government finally decided to with various configurations, pull the financial feeding tube and kill it. Perhaps at one time there was a market for something that with seating for seven to 12 looked like a Hawker 125 with pusher propellers, but that time was probably the 1950s. and will be available with a No, the turboprop market is plodding, deliberate; evolution in slow motion. More than 50 “quick change” configuration years after the King Air was introduced, companies are still finding ways not only to tweak the option. The cockpit has been aircraft but also to improve performance significantly, and in ways that make economic sense. In upgraded with Honeywell’s Primus Epic 2.0 all-glass avi- Texas, a company wants to put the Grumman Mallard, an aircraft that first flew in 1946, back into onics suite with four 10-inch production with Pratt & Whitney Canada PT6A-34s. LCD displays with advanced vision, communication, nav- igation, surveillance and air traffic management systems. INTOSH c The aircraft is certified for sin- gle-pilot IFR. Customer deliv- www.ainonline.com DAVID M DAVID eries are now forecast to begin in 2018. The Seastar was designed in the 1980s and was FAA certified under Part 23 in the early 1990s at a cost of almost $150 million. A decade ago, the company said it held letters of intent (LOI) for more than 25 of the $6 million, 180-knot, unpressurized twins. Power for the 10,141-pound- mtow Seastar comes from a pair of 650-shp P&WC PT6A-135s. It has a service ceiling of 15,000 feet, a maximum range of 900 nm and a maximum demon- strated sea state of two feet. © 2016 AIN Publications. All Rights Reserved. For Reprints go to 16 On new-build Mallards, P&WC PT6s will replace the original P&W R-1340 Wasp radials. Dornier Seastar Turbine Mallard G-73T 10,000 feet is 220 knots and max- struggled to develop the Saras imum payload is 4,021 pounds. twin-turboprop pusher for busi- Service ceiling is 29,000 feet. The ness aviation. A third prototype volume of the combined cargo/ was spotted taxiing in 2014, but Evektor EV-55 Outback passenger area is 447 cu ft and precious little has been heard the maximum cargo payload is about the program since. When 3,021 pounds. Evektor claims quizzed about the status of the the Outback can take off from, program last year, Dr. Harsh and land on, runways of less Vardhan, the country’s minister than 1,700 feet at 6,500 feet msl. of science and technology, told Evektor has selected Esterline’s the Indian Defense Research CMC SmartDeck integrated Wing News Network, “I have digital avionics system as stan- no clue.” Now we do. dard equipment. As of the beginning of this year, the Saras program is offi- Mahindra Airvan 18 cially dead and buried. Formal Indian-owned Mahindra is funding for Saras was cut off working on an updated ver- in late 2013, but NAL man- Mahindra Airvan 18 sion of the Government Air- aged to keep it alive with “lab” craft Factories N24 Nomad funds after that. Now even that Evektor EV-55 Outback nine and 14 people. twin; initially rebadged as the funding has been exhausted and Certification for the Out- The project, underwritten GA18, it is now the Airvan 18. the program has been officially back is slated for next year; thus far by the Czech ministry Plans for the aircraft include disbanded. Two flight-test air- however, this schedule seems of industry and receiving tech- a modern glass cockpit and craft were built and flew, but doubtful as the first conform- nical assistance from the Czech an 18-passenger layout with one crashed in 2009 and the ing prototype did not fly until army, recently received fund- quick-change options for pas- program never really regained April 8 this year. This $2.1 mil- ing from the Malaysian com- senger, cargo and combi ops. traction after that. A third test www.ainonline.com lion light twin from the Czech pany Aspirasi Pertiwi, which The Airvan 18 will be powered aircraft was subsequently built Republic has been in develop- has agreed to invest up to $200 by a pair of upgraded 450-shp and reportedly corrected the ment for more than a decade, million. The aircraft is designed Rolls-Royce 250-series engines myriad problems with the origi- and a non-conforming proto- for high-altitude operations and new propellers, and it will nal design, but it never flew. type first flew in 2011. The air- at unpaved airstrips. Evektor retain its STOL capabilities, craft was originally slated for claims interest from several easily using runways shorter Turbine Mallard G-73T certification in 2013. However, air forces and is marketing the than 2,000 feet. Maximum Type certificate holder Frakes the order book to date appears aircraft to entities currently cruise speed is 173 knots and Aviation has formed Mallard slim and the flight-test pro- flying Cessna 402/404 piston range is 1,080 nm with 2,190 Aircraft in Cleburne, Texas, gram appears to be adhering twins and Antonov An-2 sin- pounds of payload. Maximum with the goal of building new- to a leisurely schedule, perhaps gle-radial biplanes. useful load is 4,405 pounds with production aircraft with new a reflection that it is a largely The Outback features a an mtow of 9,400 pounds. Pratt & Whitney Canada PT6 public-sector project. Evektor quick-change cabin that can engines and Rockwell Col- says it holds orders for two be reconfigured in 20 minutes. NAL Saras lins avionics. Fred Frakes con- dozen copies of the military/ Power comes from a pair of For the last three decades, verted eight piston-powered utility/cargo/combi/passenger P&WC PT6A-21s rated at 536 India’s National Aero- Grumman Mallards to PT6 aircraft, which seats between shp each. Maximum speed at space Laboratory (NAL) has power between 1970 and 1984 © 2016 AIN Publications. All Rights Reserved. For Reprints go to 16 and later purchased the Mal- more than 800 Twin Otters, and General Electric H75-100s and performance data shows a 10- lard’s TC. Mallard plans to an estimated 500 are still flying. has Garmin G1000 glass-panel to 12-percent improvement in offer several interior configura- The X2 package gives owners of avionics, a new digital pressur- specific fuel consumption [over tions, among them an executive timed-out aircraft an economi- ization system, new air condi- the standard PT6s], which is floorplan with six single seats cally viable alternative to buying tioning with twin evaporators just incredible.” and a three-place divan, eight a new aircraft. (The DHC-6 has that delivers 300 percent more The cockpit of the G90XT single seats in a utility configu- a life limit of 66,000 hours or cooling capacity, new seats and will be substantially different ration, and a 17-seat high-den- 132,000 cycles.) Ikhana’s reman- new interior. The single-lever from a typical G1000 retrofit sity layout. Predicted numbers ufacturing process requires six power control has been devel- in a King Air. The instrument for the new Mallard: maximum to nine months of downtime. oped to make the aircraft easier panel is trimmed in carbon takeoff weight (land or water) The completed aircraft is essen- and safer for the pilot to control, fiber. It has a three-screen lay- 14,000 pounds, up to 4,462 tially “zero-timed” and good for as well as improving efficiency. out with a backup Mid-Con- pounds of fuel, a useful load of another 66,000 hours. In addi- Nextant executive vice pres- tinent Instruments standby 5,470 pounds, maximum pay- tion to incorporating the STCs, ident Jay Heublein told AIN attitude module and a Luma load of 2,350 pounds, typical the aircraft is torn down and that he expected GE to deliver Technologies LED glareshield cruise speed of 190 knots and etch-alodined on the inside, and the first engine equipped with warning panel.