The Jodel D11 Series

Jodel D112

In 1949, just one year after the first flight of the D9 prototype, Joly and Delemontez were already famous in aviation minded France. It was in that year the the French state decided that it was time to have someone develop a simple aircraft for the ever increasing number of flying clubs around France. Having witnessed the impressive performance of the D9's that were being built by hundreds of amateur builders all over France, they decided to ask the Jodel company to develop a two seater aircraft.

Mrs and Mrs Joly in the D11 prototype. Mr Delemontez swinging the prop. Joly and Delemontez in front of their D11 prototype.

The state proposed three different formulas: a high wing aircraft, a low wing, and a biplane. With the success of the low wing D9, it is not surprising that Jodel chose to develop a low wing aircraft. After no less than five months, the state responded to Jodels proposal by demanding that two prototypes should be built. These prototypes would then be bought by the state for the rediculously low price of 3 million ancient Francs. Compare this to the 1.8 million they were paying for purchasing SIPA 901's, a contemporary of the D11. This price was per aircraft, and without engine. Yet, Jodel decided to go ahead and build these planes. One was to be powered by a Salmson 9 cylinder radial engine of 45 hp (this became F-BBBF), the second one (F-BBBG) would receive a four cylinder Minié 4DC32 of 75 hp. This one was named D111.

The D10 project was shelved and the wing design of the D10 was taken as a starting point for the new aircraft. The flaps were omitted for simplicity, the wing was shortened by 50 cm, the fuselage was basically a streched D9 fuselage, widened to house two people. Working day and night to finish the two aircraft in time (the Jodel company counted 3 people at the time), they managed to meet their deadline. The first one flew on 4 April 1950, the second one on 8 May of that same year. The state liked the aircraft and bought 11 of them. These were then constructed at Jodel, permitting Delemontez to buy himself a Citroën 2CV and start the construction of his house. The D11 series became very popular with French aeroclubs, who have built numerous examples of the breed as a very affordable plane for their members.

F-BBF, the D11 prototype. The second D11 prototype, the D111.

Panel of prototype D111: Simplicity itself. Makes you wonder why modern day aircraft carry all this bells end whistles around...

At the time, Jodel had the habit of taking their aircraft around the country to show them to people at the airfields they visited. Joly usually took the D9 while Delemontez had the luxury of flying the D11. This proved to be a succesful way of marketing, and word of mouth did the rest. Soon the Jodels were invited on airshows around the country and sales went uphill. It was at this time that Wassmer showed interest in constructing the D11, and a license deal was struck. Wassmer would produce the first the D112 and D112A with a Continental C-65 engine, and later the C-90 powered D120 Paris-Nice (named after a record flight between Paris and Nice by the Wassmer company pilot).

It was this D120 that would become the most luxurious of the D11 series. Wassmer made a number of changes to the design:

• Fitment of a Continental C90 engine, producing 95 hp
• Fitment of an electrical system
• Lengthened exhaust for extra silencing
• Hydrolic brakes
• Wheel pants
• Small prop spinner
• Fuel tank of 120 liters
• Better air regulation in the cabin, including cabin heat
• Possibility to take 40 kg of luggage
• Extra instruments and avionics. Including 8(!) channel radio

Unfortunately, Wassmer went belly up. They have been producing D112's from 1951 and D120's between 1952 and 1958.

Fly-in of large number of Jodels in the mid 1950's

In the mean time, other people struck similar deals with Jodel and started building their own versions of the D11. Lucien Query of SAN being the most notable.

Exploded view of the D11. This is the Australian version, nicknamed Club.
Click on the picture to get a large version (358 kB).

Because of this, a large number of D11 versions exist today, all using the distict numbering:

Type	Engine	Power	Maker
D11	Salmson 9 ADB	45 hp	Avions Jodel
D111	Minié 4DC32	75 hp	Avions Jodel
D112	Continental A65	65 hp	Amateur
D112, D112A	Continental A65	65 hp	Wassmer
D112	Continental A65	65 hp	SAN
D112	Continental A65	65 hp	SAN
D112	Continental A65	65 hp	Denize-Renard
D112	Continental A65	65 hp	Passot-Dormoy
D112	Continental A65	65 hp	Sauze-Ginoux
D112 D	Continental A65	65 hp	Valladeau
D112 V	Continental A65	65 hp	EAC
D113	Continental O-200 A	100 hp	Amateur
D114	Minié 4DA28	70 hp	Amateur
D115	Mathis 4GF60	75 hp	Amateur
D116	Salmson 9ADR	60 hp	Amateur
D117	Continental C90	95 hp	SAN
D117 A	Continental C90	95 hp	Alpavia

D117 in the snow, mountain flying at its best

Specifications with 100hp O-200 engine

Overall dimensions:
Length	20.4 ft	6.2 m
Wing span	27 ft	8.2 m
Wing area	137 sq.ft	12.7 m2
Weights and loadings:
Empty weight	750 lbs	340 kg
Max AUW	1360 lbs	620 kg
Usefull load	610 lbs	280 kg
Wing loading	9.9 lbs/sq.ft	49 kg/m2
Power loading	13.6 lbs/hp	6.2 kg/hp