Hurel-Dubois Miles HDM.105

Last updated
HDM.105
RoleVery high aspect ratio wing research
National origin France / United Kingdom
ManufacturerH.D. et M. (Aviation), Ltd. (Hurel-Dubois - wings / F.G. Miles Ltd. - fuselage and engines)
Designer Maurice Hurel
First flight31 March 1957
Number built1
Developed from Miles Aerovan

The Hurel-Dubois Miles HDM.105 was a transport aircraft fitted with very high aspect ratio wings for research purposes, building on research carried out with the Hurel-Dubois HD.10, and a stepping point to the planned production HDM.106 Caravan. The HDM.105/HDM.106 provided the starting point for the design of the Short SC.7 Skyvan.[ citation needed ]

Contents

Design and development

Maurice Hurel  [ fr ], a French aircraft designer, became a champion of very high aspect ratio wings in a bid to significantly reduce induced drag, similar to the "Davis wing" of the Consolidated B-24 Liberator, but with much higher aspect ratios. After testing his wing design on the diminutive HD.10, Hurel was ready to progress to a full size transport aircraft, a joint venture between F.G. Miles Ltd. and Hurel-Dubois  [ fr ], fitting a Miles Aerovan with a very high aspect ratio wing and carrying out comparison tests. [1]

The HDM.105 utilised the fuselage, tail unit and engines from Miles Aerovan Mk.4 G-AOJF, fitted with a Hurel designed 75 ft 4 in (23 m) span 20.5:1 aspect ratio wing of NACA laminar flow sections, supported on aerofoil section lifting struts. The wings were fitted with double-slotted flaps actuated by Miles electric actuators from the original Aerovan. Roll control was by differential ailerons and inter-connected upper-surface spoilers. With no room for fuel in the slender wings, 13 imp gal (16 US gal; 59 L) fuel tanks were fitted in the vertical undercarriage strut fairings. [2]

Operational history

The HDM.105, with B-class registration G-35-3 (subsequently re-registered G-AHDM), was first flown on 31 March 1957 by I.A. Forbes, but was later damaged beyond repair in a landing accident at Shoreham on 28 June 1958 and dismantled. [2]

Variants

HDM.106 Caravan

Following the successful testing of the HDM.105 the joint company H.D. et M (Aviation) Ltd, was established to exploit derivatives. The HDM.106 Caravan was to have been an all-metal 8,000 lb (3,629 kg)transport aircraft, with 75 ft (23 m) span wings, powered by 2x 290 hp (216 kW) Lycoming GO-480, 2x 340 hp (254 kW) Lycoming GSO-480B or 2x 320 hp (239 kW) Turbomeca Astazou I engines, but the HDM.106 did not progress beyond the drawing board with H.D. et M (Aviation) Ltd. [3] [4]

The design for the HDM.106 was sold to Shorts who developed it into the very successful Short SC.7 Skyvan, but with a much reduced, moderately high, aspect ratio of 11:1. [2]

HDM.107 Aerojeep

The H.D.M.107, known as the Aerojeep, was a military version of the HDM.106 to a STOL light transport requirement of the US Army, to be powered by two 800 shp (597 kW) Lycoming T53 turboprop engines.

HDM.108

An enlarged HDM.106 designed by Hurel-Dubois. [2]

Miles M.111

The Miles M.111 was proposed as a light single-engined transport utilising the outer wings and struts of the HDM.105, powered by a single 320 shp (239 kW) Turbomeca Astazou turboprop engine. [2]

Specifications (HDM.105)

Data from Flight : Foretaste of the Caravan - HDM.105 handling HDM.106 prospects, [1] Jane's All the World's Aircraft 1958-59, [4] Miles aircraft since 1925 [2]

General characteristics

Performance

Related Research Articles

<span class="mw-page-title-main">Miles Aircraft</span> British aircraft manufacturer, 1943–1947

Miles was the name used between 1943 and 1947 to market the aircraft of British engineer Frederick George Miles, who, with his wife – aviator and draughtswoman Maxine "Blossom" Miles – and his brother George Herbert Miles, designed numerous light civil and military aircraft and a range of curious prototypes.

<span class="mw-page-title-main">Piper PA-25 Pawnee</span> American agricultural aircraft

The PA-25 Pawnee is an agricultural aircraft produced by Piper Aircraft between 1959 and 1981. It remains a widely used aircraft in agricultural spraying and is also used as a tow plane, or tug, for launching gliders or for towing banners. In 1988, the design rights and support responsibility were sold to Latino Americana de Aviación of Argentina.

<span class="mw-page-title-main">Piper PA-18 Super Cub</span> 1940s American light aircraft

The Piper PA-18 Super Cub is a two-seat, single-engine monoplane. Introduced in 1949 by Piper Aircraft, it was developed from the PA-11 Cub Special, and traces its lineage back through the J-3 Cub to the Taylor E-2 Cub of the 1930s. In close to 40 years of production, over 10,000 were built. Super Cubs are commonly found in roles such as bush flying, banner towing and glider towing.

<span class="mw-page-title-main">American Champion Citabria</span> Type of aircraft

The Citabria is a light single-engine, two-seat, fixed conventional gear airplane which entered production in the United States in 1964. Designed for flight training, utility and personal use, it is capable of sustaining aerobatic stresses from +5g to -2g. Its name, "airbatic" backwards, reflects this.

<span class="mw-page-title-main">Miles Aerovan</span> 1940s British civil utility aircraft

The Miles M.57 Aerovan was a British twin-engined short-range low-cost transport aircraft designed and produced by Miles Aircraft. It was primarily used for freight and passenger services.

<span class="mw-page-title-main">Turbomeca Astazou</span>

The Turbomeca Astazou is a highly successful series of turboprop and turboshaft engines, first run in 1957. The original version weighed 110 kg (243 lb) and developed 240 kW (320 shp) at 40,000 rpm. It was admitted for aviation service on May 29, 1961, after a 150-hour test run. The main developing engineer was G. Sporer. It was named after two summits of the Pyrenees.

<span class="mw-page-title-main">PZL-105 Flaming</span> Type of aircraft

The PZL-105 Flaming (flamingo) is a Polish short-takeoff-and-landing (STOL) utility aircraft designed by PZL "Warszawa-Okęcie". It remained a prototype.

<span class="mw-page-title-main">Nesmith Cougar</span> Type of aircraft

The Nesmith Cougar is a light aircraft that was developed in the United States in the 1950s and marketed for homebuilding.

<span class="mw-page-title-main">Hurel-Dubois HD.10</span> Type of aircraft

The Hurel-Dubois HD.10 was a French research aircraft first flown in 1948 to investigate Maurice Hurel's ideas about high aspect ratio wings. It was a single-seat monoplane with a retractable tricycle undercarriage and twin tails, featuring a very high aspect-ratio wing of 32.5:1. This was mounted above the aircraft's enclosed cockpit and braced with struts. Construction was of metal throughout. Between 1948 and 1954, this aircraft accumulated some 218 hours and 27 minutes of flight time and is now preserved in the Musée de l'Air et de l'Espace in Paris.

<span class="mw-page-title-main">Hurel-Dubois HD.31</span> French high aspect wing aircraft, 1953

The Hurel-Dubois HD.31, HD.32, and HD.34 were a family of civil aircraft produced in France in the 1950s, based on Maurice Hurel's high-aspect ratio wing designs.

<span class="mw-page-title-main">Partenavia Fachiro</span> Italian touring aircraft

The Partenavia P.57 Fachiro is an Italian, four-seat, high-wing, touring monoplane, fitted with a fixed tricycle undercarriage.

<span class="mw-page-title-main">Scintex Rubis</span> French light aircraft

The Scintex ML 250 Rubis was a French civil utility aircraft of the 1960s.

<span class="mw-page-title-main">Miles M.68</span> Type of aircraft

The Miles M.68 was a 1947 attempt to produce a containerised freighter aircraft by the modification of the Miles Aerovan. The container or air-trailer was part of the fuselage but could be dismounted and towed on the road.

<span class="mw-page-title-main">I.S.T. XL-15 Tagak</span> Philippines built plane

The I.S.T. XL-15 Tagak was a single-engine, twin-boom, high-wing monoplane designed after the I.S.T. XL-14 Maya and built in the Philippines in the mid-1950s. The result of a collaboration between a Government research institute and the Philippine Air Force, it was designed as a utility, liaison or ambulance aircraft and as a test bed for the use of local materials in aviation.

<span class="mw-page-title-main">Short SC.7 Skyvan</span> 1963 transport aircraft family by Short Brothers

The Short SC.7 Skyvan is a British 19-seat twin-turboprop aircraft manufactured by Short Brothers of Belfast, Northern Ireland. It is used mainly for short-haul freight and skydiving.

<span class="mw-page-title-main">Stolp Starduster</span> Type of aircraft

The Stolp-Adams SA-100 Starduster is an American single-seat sport biplane designed to be built from plans supplied by Aircraft Spruce & Specialty Co. Though the first flight was in 1957, Stardusters continue to be built and flown.

<span class="mw-page-title-main">Turbay T-3</span> Type of aircraft

The Turbay T-3A was an Argentine twin-engined seven-seater light transport of the 1960s. A single example was built, but no production followed.

The MMPL Kanpur was an Indian light four-seat aircraft, designed for service and agricultural work in the early 1960s. It is a rare example of an aircraft designed and built by a national air force for its own use.

<span class="mw-page-title-main">Les Mureaux 3</span> Type of aircraft

The Les Mureaux 3 C.2 and Les Mureaux 4 C.2 were French two seat, parasol winged fighters, flown in 1927-8, which differed only in their engines. They were developed into near identical army co-operation types, the ANF Les Mureaux 130 A.2 and ANF Les Mureaux 131 A.2, in 1929–31.

The Renard R.33 was a Belgian training aircraft with aerobatic capability. Two were flown in 1934 but no more were produced.

References

  1. 1 2 LAMBERT, C. M. (6 June 1958). "Foretaste of the Caravan HDM.105 HANDLING AND HDM.106 PROSPECTS". Flight and Aircraft Engineer. 73 (2576): 776–777.
  2. 1 2 3 4 5 6 Brown, Don L. (1970). Miles Aircraft since 1925 (1st ed.). London: Putnam & Company Ltd. pp. 354–356. ISBN   0-370-00127-3.
  3. Brown, Don L. (1970). Miles Aircraft since 1925 (1st ed.). London: Putnam & Company Ltd. pp. 356–357. ISBN   0-370-00127-3.
  4. 1 2 Bridgman, Leonard, ed. (1957). Jane's All the World's Aircraft 1958-59. London: Jane's All the World's Aircraft Publishing Co. Ltd. pp. 95–96.