Beatty-Johl BJ-2 Assegai
| DONNÉES GÉNÉRALES |
| Année du premier vol (ou de design, si seul projet) |
1961 |
| Pays | Afrique du Sud |
| Designer(s) | BEATTY, Patrick James & JOHL, Wilfred A. Theodore (Fritz) |
| Premier constructeur | Patrick James BEATTY (SA) |
| Type d'appareil | Planeur |
| Fonction | Performance |
| SPÉCIFICATIONS TECHNIQUES |
| Envergure | 15.24 m |
| Longueur | 7.06 m |
| Hauteur | -- |
| Allongement | 19.77 |
| Surface alaire | 11.8 m2 |
| Profil aile | NACA 653418 à l'emplanture, NACA2410 (modifié) au saumon |
| Masse à vide | 306 kg |
| Masse maxi | 388 kg |
| Charge alaire | 33.5 kg/m2 |
| Vitesse mini | 66 km/h |
| Vitesse maxi | 236 km/h |
| Finesse maxi | 37.5 à 98 km/h |
| Taux de chute mini | 0.64 m/s à 72.5 km/h |
| Nb sièges | 1 |
| Structure | Presque entièrement en bois, avec un revêtement en contreplaqué de toutes les surfaces |
AUTRES INFORMATIONS
| Constructeur(s) |
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| Infos techniques | Volets Fowler (avec volets déployés : surface 14,04 m2, allongement 17,3). Empennage en T | ||||||
| Histoire résumée | The BJ-2 flew for the first time in 1961. Incredibly, nearly all the innovations worked, and Pat Beatty won the South African championships with it in 1962. In the hands of Pat Beatty, Yvonne Leeman and 'Boet' Dommisse, several world records were achieved, two of which stood untill the late 60's. In 1965 the BJ-2 was flown in the World Championships in England by Boet Domisse. The venture was not a success. The weak British conditions did not favour the heavily loaded South African glider, and it was clear that 'variable geometry', as the Fowler flap idea was called, was not the best solution for scratchy weather. Under booming South African conditions, for which it had been designed, it worked extremely well. The BJ-2 was a tremendous achievement, several years ahead of its time. It was also very well engineered and built - it is still flying today, 33 years and probably at least 2500 hours later! | ||||||
| Liens personnalités | BEATTY Patrick (Afrique du Sud) JOHL Wilfred A. Theodore (Fritz) (Afrique du Sud) | ||||||
| Compléments docs |
SOURCES DOCUMENTAIRES
| Liens WEB | Site : Google Groups . Texte. (2016-11-13 CL) Site : Wikipedia (en) . Texte + specs. (2016-11-13 CL) Site : AviaDejaVu . Plan 3 vues. (2016-11-13 CL) |
| Livres | Sailplanes 1945-1965 par SIMONS, Martin (2001) [p. 226. Note + plan 3 vues + specs]. |
| Autres sources | Soaring juin 1962 p 21. Note + Photo. Soaring avril 1963 p 3. Note + Photo de couverture. Soaring vol. 28 n° 3, mars 1964 p 3-4. Note + grande photo. Taylor, John W R (1962). Jane's All the World's Aircraft 1962-63. London: Sampson Low, Marston & Co. Ltd. p. 336. "The South African nationals 1962", Sailplane & Gliding. XIII (2): 76, 112. Avril 1962. |
MODÈLES RÉDUITS
| Pas de plan ou kit référencé. |
Fiche n° 237 [Dernière mise à jour : 2016-11-13]
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