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Front Electric Sustainer
Front electric sustainer (FES) is a propulsion system for gliders that uses an electric motor powered by batteries and a foldable propeller. It is produced by LZ Design d.o.o. in Logatec, Slovenia. The system uses a 22 kW compact outrunner brushless DC electric motor located in the nose of the sailplane. Power is provided by two lithium-ion battery packs. Lighter gliders are able to self-launch with FES. Heavier gliders can use it as a sustainer system, i.e. climb and cruise sufficiently high and far to avoid an out-landing. Although gliders with FES have a shorter range (70–100 km) under power than gliders with two-stroke gasoline sustainer engines (10 litres at 8.5 L/h at 100 km/h = 120 km) or jet sustaining engines (150–200 km), the electric motor can be expected to start reliably provided there is sufficient energy in the batteries. The one-metre diameter propeller is made of carbon fibre and folds across the nose. It opens using centrifugal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glider (sailplane) With Front-end Electric Sustainer (FES)
Glider may refer to: Aircraft and transport Aircraft * Glider (aircraft), heavier-than-air aircraft primarily intended for unpowered flight ** Glider (sailplane), a rigid-winged glider aircraft with an undercarriage, used in the sport of gliding ** Military glider, used to transport combat troops and equipment to a combat zone ** Motor glider, a glider with a power source to generate thrust ** Hang gliding, Hang glider, foot-launched, framed fabric wing, usually used for recreation ** Paragliding, Paraglider, foot-launched, unframed fabric wing, usually used for recreation ** Rocket glider, a rocket propelled aircraft that routinely lands as a glider ** Walkalong glider, a model glider with updraft generated by a person walking behind ** Paper glider, a model or toy glider made out of paper * Gimli Glider, an Air Canada 767 which glided to a successful landing after running out of fuel in 1983 Other transport * Glider (automobiles), a vehicle without a powertrain * Glider (Belfast ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schempp-Hirth Discus 2
The Schempp-Hirth Discus-2 is a Standard Class sailplane produced by Schempp-Hirth since 1998. It replaced the highly successful Schempp-Hirth Discus. Design and development In plan view the almost crescent shape of the leading edge is similar to the Discus but is tapered in three stages. An entirely new wing section is used. The dihedral towards the tips was greatly increased compared with the Discus. Winglets are an optional extra. A version with a narrow fuselage is called the Discus-2a and the wider fuselage version is called the 2b. The fuselage was specifically designed to be highly crash resistant. In U.S. Air Force service the Discus-2b is known as the TG-15B. The Discus-2 has also been successful though the competition from the Rolladen-Schneider LS8 and the Alexander Schleicher ASW 28 has meant that the Discus-2 has not sold in such great numbers as its predecessor, which went unchallenged for many years. 18 metre version A version with an 18-metre span, with th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electric Motors
An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor's shaft. An electric generator is mechanically identical to an electric motor, but operates with a reversed flow of power, converting mechanical energy into electrical energy. Electric motors can be powered by direct current (DC) sources, such as from batteries, or rectifiers, or by alternating current (AC) sources, such as a power grid, inverters or electrical generators. Electric motors may be classified by considerations such as power source type, construction, application and type of motion output. They can be powered by AC or DC, be brushed or brushless, single-phase, two-phase, or three-phase, axial or radial flux, and may be air-cooled or liquid-cooled. Standardized motors provide c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albastar AS
Albastar AS are gliders produced by the Slovenian company Albastar Ltd. They are currently in the development stage. Albastar AS-13,5m FES Albastar 13,5m FES is a single-seat motor glider with 13.5 m wingspan designed for FAI 13.5 m class which took its maiden flight in April 2013. To achieve better performance, the new airfoil with flaps was designed. It has provision for Ballistic Recovery System (BRS). The cockpit was designed roomy enough to be used by taller pilots. The glider has 23 kW front electric sustainer (FES) positioned in the nose which in combination with low takeoff weight is powerful enough to be used for self-launch. This system uses folding propeller which greatly reduces aerodynamic drag when not in use. The take-off roll is 170 m with enough battery capacity to reach 1800 m AGL. However, the glider also incorporates a tow hook mounted in the center of gravity for the classic aerotow. Two AS-13,5 gliders took part on the 2nd FAI 13.5 m World championship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alisport Silent 2
__NOTOC__ The Alisport Silent 2 is a single seater sailplane of Italian manufacture. It is of the FAI type DU Class glider. It is sold by Alisport ready-to-fly or kit-built as pure glider or self-launching glider.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011-12'', page 132. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X The self-launching version is fitted with a single-blade propeller belt-driven by a two-stroke engine. One Silent 2, two Silent 2 electrics and 25 Silent 2 Self-Launch models had been completed and flown by the end of 2011.Vandermeullen, Richard: ''2011 Kit Aircraft Buyer's Guide'', Kitplanes, Volume 28, Number 12, December 2011, page 41. Belvoir Publications. ISSN 0891-1851 A version with the front electric sustainer Front electric sustainer (FES) is a propulsion system for gliders that uses an electric motor powered by batteries and a foldable propeller. It is produced by LZ Design d.o.o. in Logatec, Slovenia. The system ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diana Sailplanes Diana
The SZD-56 Diana is a 15 metre Class glider originally designed by Bogumił Bereś at PZL-Bielsko. However, PZL Bielsko went bankrupt before it could be put into serial production. The rights to the design were taken over by a new entity, Diana Sailplanes, which developed the design further into the Diana 2. The Diana 2 first flew on 12 January 2005. Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011–12'', page 141. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X After two years of development, in 2018 a new design using a fuselage from Czech manufacturer KKB and a wing from Diana Sailplanes was introduced for the 18 metre Class called the Diana 3. Design and development The Diana is a single-seat 15-metre class sailplane. It uses a mid-wing cantilever monoplane with a T-tail unit. It has an all composite carbon-aramid-epoxy structure. The spar-less wing has plate airbrakes protruding from the upper surface only with full-span flaperons. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HPH 304
HpH 304 is a family of sailplanes ranging from a single-seat composite 15 metre Class to a two-place 20 metre Open Class manufactured by the Czech company HpH Ltd. The sailplane was derived from a glider made by Glasflügel between 1980 and 1982 that was put back in production by HpH and who have modified it substantially and developed new models since. Development by Glasflügel The 304 was the second and last glider developed by Glasflügel in cooperation with Schempp-Hirth. It superseded the Glasflügel Mosquito. The principal designer of the 304 was Martin Hansen, known for his role in the design of the Akaflieg Braunschweig SB-11. The glider continued the Glasflügel tradition of innovation: the parallelogram control stick, combined trailing edge flaps and airbrakes, automatic trimming, heel-operated brakes, automatic control connections, the extremely easy assembly of the wings and tailplane, the parallelogram forward-opening canopy and lifting instrument panel are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LAK-17
The LAK-17 is a Lithuanian single-seat sailplane that was designed at the Lithuanian Aero Club ( lt, Lietuviškos aviacinės konstrukcijos or LAK), and is manufactured by Sportinė Aviacija. Design and development The LAK-17 is designed to meet the requirements of the utility category of JAR-22. It is a single-seat mid-wing sailplane of composite construction with a T-tail and flaps, it has a retractable single-wheel main landing gear and has airbrakes on the upper wing surface. The airfoil is a combination of the LAP92-130/15, at its roots, and the LAP-92-150/15, at its tips. The LAK-17 holds water ballast in tanks in the wing and fin. The LAK-17A was certified in November 1994 by the Lithuanian Civil Aviation Authority. A new variant with an improved wing was designated the LAK-17B. All variants have a wingspan but a wing with span increased to is available as an option; powered self-sustaining versions are also produced. An optional front electric sustainer engine varia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rolladen-Schneider LS8
The Rolladen-Schneider LS8 is a Standard and 18 metre class single-seat glider developed by Rolladen-Schneider and in series production since 1995. Currently it is manufactured by DG Flugzeugbau. Development By the mid–to–late eighties the LS4 had lost its leading position in the Standard Class to new arrivals, in particular the excellent Discus from Schempp-Hirth. The LS7, in spite of its advanced design, did not recapture the lead and, with flagging sales, Rolladen-Schneider went back to the drawing board. Designer Wolf Lemke was skeptical of the usefulness of developing a new airfoil. There was no guarantee that the large effort and investment required would bring any palpable gains, as the LS7, ASW 24 and DG-600 had clearly shown. The tools available at the time were simply not up to the task of reliably predicting the performance in everyday conditions of the newer laminar-flow profiles then emerging from the research labs. The 15–meter Class LS6, which firs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DG Flugzeugbau DG-1000
The DG Flugzeugbau DG-1000 is a glider of the Two Seater Class built by DG Flugzeugbau. It has a retractable engine and propeller. It first flew in July 2000 at Speyer in Germany. There are four models, with 18- and 20-metre wings of HQK-51 profile. The latest DG-1001 variant replaced the DG-505 in production.Bayerl, Robby; Martin Berkemeier; et al: ''World Directory of Leisure Aviation 2011–12'', page 142. WDLA UK, Lancaster UK, 2011. ISSN 1368-485X With span wings it is fully certified for aerobatics (+7 -5 g); with a span wings it is certified for limited aerobatics (+5 -2.65 g). The engine (DG1000T) is mounted on a pylon aft of the double cockpit. There is a reduction gear (2.3:1.0) between the engine and the two-blade carbon-fibre composite propeller. The propeller was designed by and made in the DG factory. Operational history In 2011, the DG-1000 was selected by the USAF as a replacement for the Blanik TG-10. It will serve as a basic soaring trainer for cadets a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schempp-Hirth Duo Discus
The Schempp-Hirth Duo Discus is a high-performance two-seat glider primarily designed for fast cross-country flying, including gliding competitions. Often, it is used for advanced training. Design and development The Duo Discus replaced the Janus as Schempp Hirth's high-performance two-seater trainer. It has a four-piece wing with a span of 20 metres. As with most tandem two-seat gliders, its wing is slightly swept forward so the wing root can be slightly aft to allow the rear pilot an improved view. Although it shares its name with the highly successful Standard Class Discus, any resemblance is only superficial. It first flew in 1993, and is still in production at the factory in Orlican in the Czech Republic. Its best glide ratio was measured as 44:1. An optional 'turbo' retractable two-stroke engine can be specified for extended gliding sessions. As of August 2007, over 500 Duo Discuses have been built. In the U.S. Air Force, it is known as the TG-15A. The chief rival of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schempp-Hirth Ventus 2
The Schempp-Hirth Ventus-2 is a sailplane produced by Schempp-Hirth since 1994. It replaced the highly successful Schempp-Hirth Ventus. Design and development The Ventus-2a and 2b are 15 metre sailplanes. The 'a' version has a narrow fuselage and the wider fuselage version is called the 2b. Winglets are used with these models. The 18 metre span Ventus-2c was introduced in 1995 and was almost an entirely different aircraft with a different fuselage and wings, but it has the option of shorter tips with winglets to fly as a 15-metre sailplane. From 2003 the Schempp-Hirth Discus-2 fuselage was used for all versions, which now have the designations 2ax, 2bx and 2cx. Flight tests in 1996 showed that the 15 metre version had a glide angle of 46:1 but only after considerable work on sealing gaps and by using turbulators. The narrow fuselage Ventus-2a has been highly successful in competitions with consecutive World Championship wins from 1995 to 2003. A narrow fuselage version wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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