Backstrom WPB-1 Powered Plank

DONNÉES GÉNÉRALES
Année du premier vol
(ou de design, si seul projet)
1973
Pays USA
Designer(s) BACKSTROM, Alfred A. & POWELL, John & Van WHITE
Premier constructeur BACKSTROM, Al A. & POWELL, John & Van WHITE,
Type d'appareil Aile volante Motoplaneur
Fonction Expérimental

SPÉCIFICATIONS TECHNIQUES
Envergure 6.4 m
Longueur 3.35 m
Hauteur--
Allongement--
Surface alaire--
Profil aile--
Masse à vide--
Masse maxi--
Charge alaire--
Vitesse mini--
Vitesse maxi--
Finesse maxi
Taux de chute mini--
Nb sièges1
StructureBois et toile.

[Photo d'origine inconnue]
[Dessin Klaus Niegratschka]

AUTRES INFORMATIONS

Constructeur(s)
ConstructeurConstruits
BACKSTROM, Al A. & POWELL, John & Van WHITE,1
Nombre total de constructions1
Infos techniquesMoteur Kiekhafer Aeromarine 440 de 40 CV.
Histoire résuméeWPB = Van WHITE, John POWELL and Al BACKSTROM.
From my boyhood I have been fascinated by tailless aeroplanes and sailplanes including models of them. This led to the design and construction of flying plank type sailplanes in the ¹50s.
Several duplicates have been built over the years and some are still flying. The full scale WBP-l aeroplane was aerodynamically based on these earlier saiIplanes. It is not a powered glider but has always been intended as a powered craft.
It has a good glide ratio with the engine stopped: but I was never sure of this until it had an actual engine failure. The design objective was to create a machine with the performance of normal light planes, but one that used minimal power. Due to engine availability in the early 70¹s when it was designed and built it wound up with a larger than intended engine. The WPB-l was flown extensively after early engine problems were solved but low engine reliability convinced me to put it in a museum rather than waiting for another engine failure in a very bad position.
Liens personnalités Pas de personnalité associée.
Exemplaires existants
Immatriculé : xxxx (En état de vol), localisation : Air Power Museum at Blakesburg, Iowa (USA)
Compléments docs
Page persoVers page ClaudeL

SOURCES DOCUMENTAIRES

Liens WEBSite : Les ailes volantes de Charles Fauvel . . (2009-10-24 CL)
Site : B2 Streamline, a source of information for aircraft modelers . Plans de petits modèles de vol libre. (2009-10-24 CL)
Site : Antique Airplane Association and Airpower Museum Blakesburg, Ohio . . (2009-10-24 CL)
Site : Nuricom (Klaus Niegratschka) . Page WBP-1 (note + photos + plans 3 vues). (2011-04-12 CL)
Site : Nuricom (Klaus Niegratschka) . Plan 3 vues. (2011-04-12 CL)
LivresPas de livre référencé.
Autres sourcesInfos qui m'ont été communiquées par Al Backstrom himself !
Articles de revues.

MODÈLES RÉDUITS

Pas de plan ou kit référencé.
Fiche n° 226 [Dernière mise à jour : 2011-04-29]