VFW-Fokkers' Rhein-Flugzeugbau subsidiary is now flight testing the Sirius II in its investigation of integrated ducted fan propulsion. First flown on 18 January 1972, Sirius II has two 30 hp Fichtel & Sachs Wankel-type engines driving the high-speed propeller that is contained in a duct forming an integral part of fuselage design, and the wing and tail unit of a Caproni Vizzola Calif A 21 sailplane. Use of Wankel type engines makes intermediate gears unnecessary and two-engined reliability is achieved with a single propeller.

Let L-13 Blanik tandem two-seat all-metal sailplane

Schleicher K 8B single-seat training and sporting sailplane

Sportavia RF5B Sperber, developed from the RF5, with cut-down rear fuselage

Sportavia RF5 tandem two-seat powered sailplane developed from the RF4D

Sportavia SFS 31 Milan single-seat powered sailplane

SZD-43 Orion single-seat sailplane, winner of the 1972 World Championships in the Standard Class

SZD-37 Jantar 19 single-seat Open Class sailplane, the first of Polish design to be built of glassfibre laminates

SZD-40X Halny two-seat high-performance sailplane

Pilatus B4-PC11 single-seat Standard Class sailplane

ICA-Brasov IS-28 tandem two-seat training sailplane

IS-29B single-seat Standard Class 15 m sailplane produced by ICA-Brasov

IS-29D single-seat Standard Class 15 m sailplane produced by ICA-Brasov

IS-29E single-seat high-performance Open Class sailplane, with 17 6 m span all-metal wings

IS-29G, club version of this design by Dipl Ing Silimon, with all-metal 16 5 m span wings

IS-28B tandem two-seat high-performance training sailplane

SZD-45 Ogar two-seat powered sailplane, with 68 hp Sportavia Limbach engine

Slingsby T.61, licence-built version of the Scheibe SF-25B powered sailplane

Caproni Vizzola Calif A-21 two-seat high-performance sailplane

A-21J version of the Calif A-21, powered by a Sermel TRS 18 turbojet engine

Caproni Vizzola Calif A-15 single-seat high-performance sailplane

PIK-16c Vasama single-seat Standard Class sailplane

PIK-20 single-seat high-performance sailplane, due to make its first flight during 1973

Rolladen-Schneider LS-1 high-performance Standard Class sailplane

Schweizer SGS 1-26E single-seat medium-performance sailplane

Schweizer SGS 2-32 two/three-seat high-performance sailplane

CARMAM M-100 S Mesange single-seat Standard Class sailplane

M-200 Foehn two-seat high-performance sailplane built by CARMAM

Wassmer WA-26 Squale single-seat high-performance sailplane

Akaflieg Braunschweig SB-5c Danzig single-seat high-performance sailplane

Akaflieg Darmstadt D-38 single-seat high-performance sailplane

Glasflugel Kestrel 17 metre single-seat high-performance sailplane

Slingsby T.59D 19 metre version of the Kestrel single-seat sailplane

Start + Flug H 101 Salto single-seat sailplane, based on the Glasflugel Standard Libelle

Scheibe-built SF-27 Zugvogel V single-seat Standard Class sailplane

Gepgyar R-26 S Gobe two-seat all-metal sailplane

SZD-9bis Bocian 1E tandem two-seat general-purpose sailplane

EFF Prometheus 1 powered sailplane (264 lb st TRS 25 turbojet engine)

Neukom Standard Elfe S-4 single-seat Standard Class sailplane

Neukom Standard Elfe S-3 single-seat Standard Class sailplane

Bryan (Schreder) HP-14T single-seat high-performance sailplane

Bryan (Schreder) HP-15 single-seat Standard Class sailplane

Prototype Miller WM-2 high-performance single-seat powered sailplane

Austria-Krahe single-seat powered sailplane (40 hp TR-II engine)

Curitiba KW 1 b 2 Quero Quero single-seat all-wood training glider

Vaysse TCV-01 single-seat sailplane with additional side-view (top) of TCV-02

Vaysse TCV-03, developed from the Breguet 905 Fauvette and intended for amateur construction

Jacquet et Pottier J.P. 15-36 single-seat sailplane

Akaflieg Munchen Mu 26 single-seat high-performance sailplane

Akaflieg Munchen Mu 27 two-seat high-performance sailplane

Blessing Rebell one/two-seat powered sailplane (54 hp Hirth engine)

Schempp-Hirth Standard Cirrus single-seat high-performance sailplane

Schempp-Hirth Nimbus II single-seat high-performance sailplane

Schleicher ASW 15 single-seat Standard Class sailplane

Civil Aviation Department HS-I Mrigasheer Standard Class sailplane

Tainan Mita III two-seat training and sporting sailplane

Sagami S-3K-1 modified pre-production version of the S-3

Tainan Sagami S-3 single-seat training and sporting sailplane

SZD-30 Pirat single-seat Standard Class sailplane, of which more than 310 have been built

Sixth production example of the Berkshire Manufacturing Corporation Concept 70 metal and glassfibre sailplane

Prototype of the Laister LP-15 Nugget single-seat Standard Class sailplane

VTC-Vrsac SSV-17 two-seat powered sailplane (60 hp Franklin 2A-120-A engine)

Nahuel single-seat amateur-built sailplane, designed by Sr Berca of AVEX

Schleicher ASK 13 tandem two-seat training and high-performance sailplane

Nihon University N-70 Cygnus single-seat powered sailplane (44 hp Fuji 1100-EA61 engine)

Takatori SH-8 two-seat water-borne sailplane

Takatori SH-16S single-seat high-performance sailplane

Spengeler HS3 Skikarus one-man ski-glider

Holmes KH-1 amateur-built high-performance sailplane at Sywell in 1972

Yorkshire Sailplanes YS 53 Sovereign two-seat training sailplane, modified from the Slingsby T.53.B

Prototype of the Birmingham Guild BG Gipsy 135 sailplane, designed by Sailplane Design Ltd

Mr Taras Kiceniuk Jr beginning a short flight in the Icarus II hang-glider from a hillside near Riverside, California

Volmer VJ-11 hang-glider, airborne after a short downhill run

Volmer VJ-23 “Swingwing” hang-glider

The Austrian twin-boom powered sailplane known as the Bussard

Bisier single-seat powered sailplane, built in Bulgaria for glider training

Matejcek M-17 Universal two-seat powered sailplane, with 45 hp Stamo engine

Akaflieg Braunschweig SB-10 Schirokko two-seat high-performance sailplane

Akaflieg Stuttgart FS-25 Cuervo single-seat sailplane, after its first flight

Akaflieg Stuttgart FS-26 Moseppl single-seat powered sailplane (26 hp Solo-Hirth engine)

Hirth Hi 26 Mose II two-seat powered sailplane prototype

Militi M.B.1 Idroaliante single-seat homebuilt flying-boat glider

Militi M.B.2 Leonardo powered flying-boat glider (42 hp modified Panhard engine)

JEAA (Miyahara) MGM-2 tandem two-seat powered sailplane

LSS-02B retractable-monowheel version of the LSS-02

Tainan LSS-02 single-seat high-performance sailplane

SZD-35 Bekas tandem two-seat training sailplane, of which two prototypes have been built

SZD-36A Cobra 15 single-seat high-performance Standard Class sailplane

Borzecki Alto-Stratus 24 hp powered sailplane

Manuel Hawk single-seat amateur-built sailplane on its sixth flight, in December 1972

Sigma 1 high-performance competition sailplane, with flaps and spoilers retracted

Waterman Seagull Flyer hang-glider

Vega-2 single-seat Standard Class sailplane