Oldershaw O-3

DONNÉES GÉNÉRALES
Année du premier vol
(ou de design, si seul projet)
1967
Pays USA
Designer(s) OLDERSHAW, Vernon
Premier constructeur Vernon OLDERSHAW, Bakersfield (California, USA)
Type d'appareil Planeur
Fonction Expérimental

SPÉCIFICATIONS TECHNIQUES
Envergure 16.42 m
Longueur--
Hauteur--
Allongement23.5
Surface alaire11.52 m2
Profil aileWortmann 61-184 emplanture, 60-126 saumon
Masse à vide345 kg
Masse maxi454 kg
Charge alaire39.41 kg/m2
Vitesse mini--
Vitesse maxi--
Finesse maxi41 à 108 km/h
Taux de chute mini0.64 m/s à 90 km/h
Nb sièges1
StructureStructure bois avec un nez en composite fibre de verre.

[Gliders and Sailplanes of the world]
[Pas de plan 3 vues connu]

AUTRES INFORMATIONS

Constructeur(s)
ConstructeurConstruits
Vernon OLDERSHAW, Bakersfield (California, USA)2
Nombre total de constructions2
Infos techniquesEmpennage en V.
Histoire résuméeA development of the O-2 but for Open Class competition, the O-3 featured a longer span of higher aspect ratio, with trailing-edge airbrakes and a retractable gear. One was flown in several Nationals and made a flight of 694 km./ 431 miles. Two O-3’s were built, and both were subsequently motorized. A two-cylinder, in-line, two-cycle Yamaha snowmobile engine was mounted inside the fuselage behind the wing spar driving a pylon-mounted pusher propeller via belts.

The original 0-3 single-seat sailplane was designed and built by Mr Vernon W. Oldershaw of Bakersfield, California, in 15 months for a cost of $4,000, and it made its first flight in June 1967. He then began to develop a retractable powerplant installation which was added to a second 0-3 completed in 1975, the engine being used primarily for take-off and climb to soaring height. It is a 31 hp Yamaha Snowmobile SW433 two-stroke 'flat twin' driving a two-blade fixed-pitch wooden pusher propeller, the pylon mounted propeller retracting forwards into the fuselage behind closed doors to lie over the engine, which is behind the cockpit. There is a single aluminium fuel tank in the fuselage of 2.5 US gallons capacity. The 0-3 is of all-wood construction with cantilever shoulder wings and a V-tail; the wings have a spruce spar and plywood ribs and skins, with wooden ailerons and air brakes on the trailing edges. The ellipitcal-section fuselage is built up from plywood bulkheads, the front portion from the nose to the wing trailing edge having a glassfibre outer shell and the remainder being plywood-covered. The tail surfaces, which are slightly swept back, are
of similar construction to the wings. There is a retractable rubber-sprung monowheel and a tail skid. The pilot sits under a one-piece flush-fitting cockpit canopy.
Liens personnalités Pas de personnalité associée.
Exemplaires existants
Immatriculé : N26888 (En exposition), localisation : Southwest Soaring Museum, Moriarty (New Mexico, USA)
Compléments docs

SOURCES DOCUMENTAIRES

Liens WEBSite : SailplaneDirectory.com . Oldershaw. (2010-03-21)
Site : Sailplane Directory . O-3 ; note + 2 photos + specs. (2015-12-01 CL)
LivresGliders & Sailplanes of the world
par HARDY, Michael (1982) [p. 161. Note + photo + specs].

MODÈLES RÉDUITS

Pas de plan ou kit référencé.
Fiche n° 978 [Dernière mise à jour : 2015-12-01]