Thingiverse
Lippish P-13 1/48 scale model + bonus by Sikka
by Thingiverse
Last crawled date: 3 years, 2 months ago
The solid-fuel powered P.13 was one of several distinct Lippisch design studies to be so designated and became identified as the P/13a. It underwent much the same variations of form as the P.12, being presented in a brochure with the large fin and integral raised cockpit, and with an articulated, double-hinged landing skid. The wing trailing edge is angled slightly forwards and the downturned tip surfaces have been discarded. The outer wing sections could be folded upwards for transportation by rail.
A variant with a rectangular canard foreplane was wind-tunnel tested. This was not really consistent with ramming and there are other indications that conventional gun armament was being considered.
As conventional fuels were in extremely short supply by late 1944, Lippisch proposed that the P.13a be powered by coal. Lippisch soon came to conclude that this might even be more effective than liquid fuel, as the location of combustion was more precisely controllable. Initially, it was proposed to employ a wire-mesh basket holding even-sized granules of brown coal, placed in the lower region of the internal airflow. The burning coal gave off carbon monoxide (CO) gas which was mixed and combusted with the upper air flow downstream. The arrangement proved inefficient.
To replace it a spinning circular basket was developed, revolving on a vertical axis at 60 rpm. The hot exhaust would be mixed with cooler bypass air to improve thermodynamic efficiency, before being expelled through the rear nozzle. Other fuels considered promising, due to their ability to generate flammable vapours, included bituminous coal, or pine wood heat-soaked in oil or paraffin. A burner and drum were built and tested successfully in Vienna.
A variant with a rectangular canard foreplane was wind-tunnel tested. This was not really consistent with ramming and there are other indications that conventional gun armament was being considered.
As conventional fuels were in extremely short supply by late 1944, Lippisch proposed that the P.13a be powered by coal. Lippisch soon came to conclude that this might even be more effective than liquid fuel, as the location of combustion was more precisely controllable. Initially, it was proposed to employ a wire-mesh basket holding even-sized granules of brown coal, placed in the lower region of the internal airflow. The burning coal gave off carbon monoxide (CO) gas which was mixed and combusted with the upper air flow downstream. The arrangement proved inefficient.
To replace it a spinning circular basket was developed, revolving on a vertical axis at 60 rpm. The hot exhaust would be mixed with cooler bypass air to improve thermodynamic efficiency, before being expelled through the rear nozzle. Other fuels considered promising, due to their ability to generate flammable vapours, included bituminous coal, or pine wood heat-soaked in oil or paraffin. A burner and drum were built and tested successfully in Vienna.
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