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I Ae 48 

The Coup d' Etat  in September of 1955 sets a parenthesis to the project of the I Ae 37 because of redistribution of public funds, and it is not until 1958 that they were available again.

Dr. Horten does not remain inactive and  introduces various changes in the original glider, being the most notable the adoption of a normal enclosed canopy, with a Plexiglas bubble sliding to the rear. After testing it 50 hours it was decided to build the engined version. 

Then the planning of the project suffers a change. Dr. Horten suggested to  continue with the building of the I Ae 37 as an advanced subsonic trainer, and develop the I Ae 48 as a twin engined, all weather, two - place interceptor,  capable of reach (and surpass too) Mach 2. 

The I Ae 48 had a delta gothic wing that was succesfully tested in the I Ae 37, a backwards slimmed fuselage to comply with the "area rule", ejectable seats and two Rolls Royce "Avon" turbines equiped with thrust deflectors that may enabled it to operate from airplane - carriers reducing the run neccesary to takeoff. 

During 1960, with the subsonic I Ae 37  in advanced state of building (it was expected to finish it in 1961) and with the works over the I Ae 48 recently started, again comes the order (and now definitive) to stop works because of  "lack of funds". 

End point (and a regrettably one) for one of the most brilliant chapters of the history of the Instituto Aerotécnico - F.M.A. 

Wingspan 09.00 m.
Fuselage lenght 11.50 m.
Height 04.60 m.
Wing area 50.00 m2
Empty weight (expected) 275 kg.
Maximum takeoff weight (expected) 16800 kg.
Engines 2 x RR "Avon" with a thrust of 5000 kg. each one
Combustible capacity  10000 kg.
Maximum speed (expected) Mach 2+
Landing speed (expected) 155 km/h

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