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CONTENTS

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 * (Top)
 * 1 Development
 * 2 Variants
 * 3 Specifications
 * 4 See also
 * 5 References

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PILATUS B-4

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From Wikipedia, the free encyclopedia


B4-PC11 Role Club-class glider
Type of aircraft
National origin Switzerland Manufacturer Pilatus Designer Ingo Herbst, Manfred
Küppers and Rudolf Reinke First flight 7 November 1966 Number built 322

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

The B4-PC11 is designed to Standard Class specifications, meaning 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 Ingo Herbst,
Manfred Küppers and Rudolf Reinke. 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) made 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 built
only 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]
B4-PC11 permitted to fly a number of aerobatic manoeuvres, it was not permitted
to do inverted loops or flick/snap/quick maneuvers. The B4-PC11 was available
with either fixed or retractable landing gear. B4-PC11A developed to perform
inverted loops and was also able to handle higher g-forces. B4-PC11AF released
in 1975, with full aerobatic capabilities. Lynch B4M1 a motor glider conversion
in Australia by John F. Lynch, powered by a 17.9 kW (24.0 hp) König SC 430
engine.[2]

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


SPECIFICATIONS

[edit]

General characteristics

 * Crew: one
 * Length: 6.57 m (21 ft 7 in)
 * Wingspan: 15 m (49 ft 3 in)
 * Height: 1.57 m (5 ft 2 in)
 * Wing area: 14 m2 (150 sq ft)
 * Aspect ratio: 16
 * Airfoil: NACA 64(3)-618
 * Empty weight: 230 kg (507 lb)
 * Gross weight: 350 kg (772 lb)

Performance

 * Never exceed speed: 240 km/h (150 mph, 130 kn)
 * g limits:
   

PC-11 +5.3 -3 PC-11A +6.5 -4 PC-11AF +7 -5
 * Maximum glide ratio: 35:1 (Measurements performed by Idaflieg suggest 30)
 * Rate of sink: 0.63 m/s (124 ft/min)


SEE ALSO

[edit]

Aircraft of comparable role, configuration, and era

 * Schweizer SGS 1-34
 * ICA-Brasov IS-29

Related lists

 * List of gliders


REFERENCES

[edit]
Wikimedia Commons has media related to Pilatus PC-11.
 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)
 2. ^ John W.R. Taylor, ed. (1987). Jane's All the World's Aircraft 1987–88.
    London: Jane's Information Group. ISBN 9780710608505.

 * Hardy, M. Gliders & Sailplanes of the World. Ian Allan, 1982


 * v
 * t
 * e

Pilatus aircraft
 * Buochs Airport
 * OC Oerlikon

Trainers
 * P-2
 * P-3
 * PC-7
 * PC-9
 * PC-21


Utility / transport
 * SB-2
 * P-4
 * PC-6
 * PC-8
 * PC-12
 * PC-24

Gliders
 * B4/PC-11

Abandoned projects
 * P-1
 * P-5
 * PC-10

category

Retrieved from
"https://en.wikipedia.org/w/index.php?title=Pilatus_B-4&oldid=1018102821"
Categories:
 * Pilatus aircraft
 * 1960s Swiss sailplanes
 * Glider aircraft
 * High-wing aircraft
 * T-tail aircraft
 * Aircraft first flown in 1966

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 * Short description matches Wikidata
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