Volmer M-1 / Martin M-1

Jim Martin contracted Volmer Jensen to design and built him a glider for contest flying just before the Second World War.

The aircraft was constructed with a wooden structure and covered in doped aircraft fabric covering. The cantilever gull-style wing employed a NACA 4400 series airfoil. The tail was a conventional low-tail design and featured strut-bracing. The M-1 was registered as an Experimental – Amateur-built aircraft and was not type certified.

Jensen completed the aircraft in 1939.

Martin flew the aircraft in a number of US Nationals, as did a later owner of the M-1, Emil Lehecka. While Lehecka owned it the aircraft picked up the nickname of the Whatsit. By the 1970s the aircraft was owned by Francis Kalinowsky and was based at the Circle X airport in Florida. At that time it was reportedly in good repair and was well maintained.

The aircraft was removed from the Federal Aviation Administration registry and its whereabouts are unknown.

M-1
Wingspan: 48 ft 0 in (14.63 m)
Wing area: 180 sq ft (17 m2)
Aspect ratio: 12.8:1
Airfoil: NACA 4400 series
Empty weight: 438 lb (199 kg)
Gross weight: 631 lb (286 kg)
Maximum glide ratio: 28 at 50 mph (80 km/h)
Rate of sink: 132 ft/min (0.67 m/s) at 40 mph (64 km/h)
Crew: one

Volmer 1927 Glider / VJ-3

Volmer S. Jensen was born in Milwaukee in 1909. He began to design and build sailplanes in 1925 at age 16. using plans published in the Boy Mechanic Magazine. He built a second one the following year from additional plans from the same source, and in 1927 he built his first glider with aerodynamic controls, an enclosed cockpit and a wheeled landing gear. It was based on the MIT glider Eddie Allen had taken to Europe in the mid-20s to compete against the Germans.