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Nema od ovoga nista ali da ih spomenemo. Turci(TAI) i Siera Nevada(SNC) sa svojim jeftinim konceptom. Mada mozda ga naprave za Tursku...
Sierra Nevada Corp., TAI Team To Offer Freedom Trainer For T-X
Citat:The company’s twin-tail, moderately swept-wing trainer with a tricycle landing gear and step-tandem cockpit is powered by the Williams International FJ44-4M, a 3,600-lb.-thrust-class engine chosen by the Aero Vodochody L-39NG and Leonardo/Alenia Aermacchi M-345 High-Efficiency Trainer. Williams certified the engine in 2010 for the light business jet market, providing a cruise speed of up to 450 kt. over a 2,000-nm range with 5,000 flight hours between overhauls. It was chosen as the Freedom Trainer offering due to its relatively inexpensive procurement and sustainment costs as well as fuel efficiency, with the company saying it can buy two Williams engines for half the cost of one high-power military turbofan.
The company already has one flying prototype in development, and it intends to answer the long-awaited T-X request for proposals (RFP) once released by the Air Force. The timing of the RFP will not be affected by the stopgap funding measure passed by Congress, since it is not a new-start program. The air force says a RFP notification could come any day, otherwise it will push into January due to holidays.
SNC/TAI’s proposal is for a purely a fly-by-wire trainer, seeming to leave little design margin for secondary light-attack or aggressor roles. Instead, the aircraft digitally replicates radar intercepts, precision-guided munition drops and the use of targeting pods. The aircraft is no larger than the GE J85-5-powered T-38 and consumes 30% less fuel, allowing weight reductions across the board to boost high subsonic performance at lower thrust levels. “We’re focusing on open architecture and lowest total ownership cost,” one company executive explains. The Freedom Trainer also is designed to fully comply with the Air Force’s Open Mission System standards to prevent “vendor-lock,” even though that requirement was dropped. “We did not want to drive costly design/redesign into systems that may otherwise meet the objective requirement,” an Air Force Life Cycle Management Center official says. SNC believes buying into any proprietary systems will drive up costs later.
The company says the Freedom Trainer will likely cost less to buy and sustain than its higher-powered competitors and consume 40-50% less fuel, while still meeting all threshold and objective performance requirements, including 6.5-7.5g sustained and high angle-of-attack maneuverability.
http://aviationweek.com/defense/sierra-nevada-corp.....rainer-t-x
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