Delanne DL 70
Intended as transatlantic flying-boat
To compete with S.N.C.A.S.E. 200, Latécoère 631 and CAMS-Potez 161
Two decks with luxury cabins for 52 passengers
Extra facilities: saloon, dining room, bar, kitchen, rest-room for crew of 8.
- 6 x 1500 HP engines
- Double flaps in front wing
- Weight: 54 000 kg
- Estimated speed: 500 km/h (310 mph)
Brian Ward comments the DL70: "I don't think this could ever have been a serious suggestion. If Delanne had seen a real flying boat take off, he would have realized that the rear wing of this design would have been damaged or ripped off very quickly by the huge amounts of spray. Flying boat designers always make great efforts to get their lifting surfaces as far above the water as possible. In fact, it would have made a lot more sense to have the forward wing mounted low to benefit from "ground" effect and in front of the plume of spray, and the rear wing at the top of the fuselage out of harms way. Engines mounted on the rear wing, of course."
I am wondering again. Did M. H. Delanne adjust the hull of this flying boat to reduce the spray? Did he keep the mentioned problem in mind?
Delanne DL 150
Intended as five-seater. Later (1939) changed into crew of four.
- Total weight 14000 kg
- wingarea 88,7 m2 (954 sq ft)
- 2 x 1580 HP
- Climb to 5000 m (16 404 ft) in 10 min 6 s (estimated)
- Top speed 500 km/h (311 mph) (estimated)
Delanne DL 160
Improved view by placing the pilot in front of the front wing.
- 2 x Hispano 12 Y-89ter engines drive twin contra-rotating props.
- At 5500 m height (18,044 ft) in 4 min 35 s.
- Estimated top speed 775 km/h (482 mph)
- Probably also double flaps (was not mentioned in article in Air Pictorial)
- Slots in front wing???
DL240B
Clearly intended as passenger airplane. A pusher prop which makes the pilot have a good vision for a steep but slow descent towards the airstrip.
Note that there are ailerons in both set of wings.
On the Secret Projects forum i found: "a tandem wing ten-seat transport monoplane project,powered by two 500 hp engines."
D-360
I found this info on the Secret Projects forum: "was a tandem delta wing interceptor project of 1950s,with
a new design ,twin tail fins ,and a bubble canopy.it had a single
jet engine, 2.5 Mach speed and 15000 m altitude"
D-1300
I only found these two drawings of this jet.
A French magazine describes it as follows: a airplane for tourism, private jet, postal transport using two Turbomeca Marboré-II jet engines.
Westfield Delanne F124T
Westfield (the firm that also made the tandemwinged Lysander) proposed another Delanne inspired rocket powered airplane. It was their plan B for this requirement of the UK Air Ministry. Plan A had a normal wing platform.
4 seater
It is not clear to me which place this one gets in the timeline of Delanne. But it is surely a nice looking one. It is the one with which i open the Delanne section.
Click to get the larger picture. I found this drawing on the Secret Projects forum.