OTRAG Rocket.pdf

Level 3: 8 x CPMR (2x4 square)
Level 2: 24 x CPMR (+8 = 32 CPMR CPMR = 4x8 rectangle)
Level 1: 96 x CPMR (+24 CPMR CPMR = 128 = 8x16 rectangle)
This missile would be 4.8x2.4 m wide at a height of 24 m. It has also been considered to
extend the outer ring by 3 m in order to form the payload space. These engines would
then burn 15 seconds longer. In later approaches you have rejected this idea again.
The rapidly increasing width of the rocket and the bundling of many engines should
provide an additional ideas to Lutz Kayser back fabric. As described, the nozzle end
shortly after the combustion chamber, so that the gases at the nozzle exit, very little
energy has been transferred to the rocket. Up of many engines connecting gas flows and
accumulate it comes to a further rebound in order to increase the specific impulse for
Kayser detail by 10-12%.
The following standard versions were being considered (payload for a 200 km high orbit
LEO)
Total number of CPMR payload launch mass Level 1 Level 2 Level 3
64 1 t 100 t 48 12 4
T 200 t 128 2 96 24 8
256 4 t 400 t 192 48 16
512 8 t 800 t 384 96 32
1024 16 t 1600 t 768 192 64
The payload data refer to a low Earth orbit. The payload for the GTO orbit betrugNo text
about 40% of it and the payload for the GSO orbit about 20% of them (this would be
roughly the payload to Venus or Mars). A 200-ton rocket with 128 modules, so the
payload would have had a Delta 3914, the standard model of the time, and a version with
256 modules would be something worse than an Atlas-Centaur or Ariane 1 was.
Mr. Kayser I first gave values of 24 m module, and when I complained inconsistencies,
new data, which differed in the thrust and burn time of the first substantially. I have
therefore both separately identified by a "/". Here, the data of a 24 m long module
consists of a tank and an engine. This length would have been provided for an orbital
version.
Length 25 m
Diameter 0:27 m
Tank mass of 100 kg
Engine 65 kg
at the end of firing 50 kg
Push the start 35 kN / 25 kN
Thrust at the end of firing 15 kN / 15 kN
Burn time 150 sec / 120 sec
Oxidizer HDA 1130 kg
Filling 66%
Oxidizer length 18 m