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Prue 215A - Mamba Jet

Mr Max Dreher, an aeronautical engineer, has built a series of small turbojet engines between 1952 and 1976. One of them, known as the TJD-76 Baby Mamba, has been mounted on his Prue 215A all metal 12.m sailplane as an auxiliary turbojet.

After initial running on the test stand, Max DREHER installed the engine on his Prue 215 sailplane. To do this he designed a jet pack consisting of the engine, the pressurized fuel system and the lubrication unit. the total weight of this first pack was 25  pounds. An auxiliary oil tank is mounted separately and employs an electrical driven gear pump.

A third unit, the jet control pack (engine controls, instruments, switches) is located in the cockpit.

Prue-215 Jet Technical data

ManufacturerIrvin Prue & Max Dreher
TypeJet glider
First flight
Nb. built1 (with jet)

Power plant

EngineDreherTJD 76C
Max ratings  245 N55 lbs


Span12,00 m40,00 ft
Lengthm ft
Heightm ft
Surface alaire8,36 m²90.0 ft²


Crew kg lb
Fuel & oil kg lb
Max. permissible kglb


Vne - Max. speed km/hmph
Vno - Max. crus. speedkm/hmph
Max. rate of climbm/minft/min
Service ceilingmft
Landing distance from 50 ftkm/hmph
Take off distance to 50 ftmyds