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VOLTIGE en PLANEUR PILATUS B4.ACROBATICS in GLIDER PILATUS B4
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Pilatus B4 Segelkunstflug an der DASSU
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RC Piper Cub schleppt RC Pilatus B4
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Pilatus B4 von Valenta Modellbau , geflogen im Kunstflug an 6s
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PILATUS B4, Erstflug 1993, Segelflugmodell 22kg mit Handstart! ! !
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Pilatus B4 PC11 グライダーデモストレーションフライト 丘珠空港
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Aerobatic Pilatus B-4 glider flight at the London Gliding Club
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Inverted low pass with Pilatus B4 in Vipiteno
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GoZC Pilatus B4 aerobatics at EHHV
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RC Pilatus B4 FPV
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Schleppkupplung Seagull Pilatus B4
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Seagull Pilatus B4 and Zagi Gliders
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Erstflug Pilatus B4, F Schlepp Pilatus   Pilatus 15 02 2014
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Pilatus B4 Yuki sloping autumn Stetten
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Pilatus B4 3.0m
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Seagull Pilatus b4
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Pilatus B4 3.75m am Colli Hang
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DMT Pilatus B4 1600
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28
PILATUS B4 [Yuki Model] - Hangflug bei Föhn mit rund 7bft (2014-01-04)
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Pilatus B4 Segelkunstflug
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COSMFC Seagull Pilatus B4 Maiden Flight
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Pilatus B4 Fiss 2004
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37
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38
Pilatus B4 Thermikflug 8 3 2014
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39
Pilatus B4 Aerobatics in the Alps --GoPro HD Hero--
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::2013/11/17::
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40
joe
joe's pilatus b4 at sedili
::2011/01/09::
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41
Pilatus B4, 4,8m, Elektroantrieb - RC-Check
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42
PILATUS B4 - Gleitversuche
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43
pilatus b4 mit kolibri t 20
pilatus b4 mit kolibri t 20
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44
Pilatus B4.wmv
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45
Pilatus B4 rc glider gopro view cockpit
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::2014/03/17::
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46
Pilatus B4 Yuki slope aerobatics with motor assist & mid-air collision
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::2013/08/20::
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47
Johan Gustafsson World Advanced Glider Aerobatic Champion 2010
Johan Gustafsson World Advanced Glider Aerobatic Champion 2010
::2010/11/22::
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48
Pilatus B4 aerobatics: free program
Pilatus B4 aerobatics: free program
::2006/11/13::
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49
Model Pilatus B4
Model Pilatus B4
::2007/08/07::
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pilatus B4 au cap blanc nez filmé par Bernard.V.
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::2008/02/18::
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From Wikipedia, the free encyclopedia
  (Redirected from Pilatus PC-11)
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B4-PC11
Pilatus B4-PC11 AF D-3993.jpg
Role Club-class sailplane
National origin Switzerland
Manufacturer Pilatus
Designer Manfred Herbst and Rudolf Kueppers
First flight 7 November 1966
Number built 335

The Pilatus B4-PC11 (also known as the PC-11 in the Pilatus numbering sequence) is an all-metal intermediate sailplane built by Pilatus Aircraft of Switzerland.

The B4-PC11 is designed to Standard Class specifications, which means that it has a 15 metre wingspan and no flaps. Air brakes are provided on the top surface of each wing for glidepath control. Construction is aluminium, with foam ribs in the mainplane, fin and tailplane.

Development[edit]

The design of this glider originated in the 1960s, when the company Firma Rheintalwerke G. Basten (from which the "B" in the original designation is derived) manufactured the first two prototypes. The designers were Manfred Herbst and Rudolf Kueppers. The first flight of the first prototype took place on 7 November 1966. However, no series production was started.

In 1972 Pilatus bought the manufacturing licence for the B-4 and renamed it the B4-PC11. In the spring of the same year the first production example (numbered HB-1100) undertook its first flight.

A total of 322 B4-PC11s of all versions were built by Pilatus by 1980, when the license to manufacture the craft was sold to Nippi Aircraft of Japan, who only built 13 examples, plus a two-seater designated the Nippi B4T.[1]

Subsequently, in 1994, EWMS Technomanagement bought the rights to produce and service the B4-PC11. This company also specializes in renovating and upgrading older B4-PC11 craft. In addition, it manufactures a motorized B4-PC11.

Variants[edit]

While the original B4-PC11 was permitted to fly a number of aerobatic maneuvers, it was not permitted to do inverted loops or flick/snap/quick maneuvers. Consequently, the B4-PC11A was developed, which was permitted to perform inverted loops and was also able to handle higher g-forces. In 1975 the B4-PC11AF version was released, which had full aerobatic capabilities. The B4-PC11 was available with either fixed or retractable landing gear.

The changes in construction from B4-PC11 through A and AF variants were to add extra ribs through the fuselage section (increasing torsional rigidity), and to modify the control column stops and shorten the rudder giving greater control surface deflection.

Specifications[edit]

General characteristics

  • Crew: One pilot
  • Length: 6.57 m (21 ft 8 in)
  • Wingspan: 15.00 m (49 ft 3 in)
  • Height: 1.57 m (4 ft 2 in)
  • Wing area: 14.0 m2 (151 ft2)
  • Aspect ratio: 16
  • Empty weight: ca. 230 kg (508 lb)
  • Gross weight: 350 kg (770 lb)

Performance

  • Maximum speed: 240 km/h (150 mph)
  • Maximum glide ratio: ca. 35 according to Pilatus. Measurements performed by Idaflieg suggest 30.
  • Rate of sink: 0.63 m/s (126 ft/min)

Airfoil used for main wings NACA 64(3)-618.
Wing twist on main wings None(unofficial).
Airfoil used for horizontal tailplane NACA 0009(unofficial).
Max g-load
PC-11: +5,3g/-3g.
PC-11A: +6,5g/-4g.
PC-11AF: +7g/-5g.

See also[edit]

Aircraft of comparable role, configuration and era
Related lists

References[edit]

  1. ^ http://www.nippi.co.jp/history/history1980.html B4T in History of Nippi company (in Japanese:Click PHOTO icon after word B4T to see the photo)
  • Hardy, M. Gliders & Sailplanes of the World. Ian Allan, 1982
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