Feasibility Study I of Low Cost Satellite Launch Technology under Contract of the German Ministry of Research and Technology

1. Theoretical and experimental
feasibility study of low cost
satellite launch vehicle
Author: Lutz Kayser
Volume I

2. Note to reports low-cost launch vehicle technology
TECHNOLOGIEFORSCHUNG GMBH Germany performed theoretical and experimental feasibility
studies for the German Ministry for Research and Technology (BMFT) in 1972 and 1973.
Minister of BMFT, Professor Leussinck, was asked by Chancellor Willy Brandt to initiate these
studies to prove that Lutz Kayser’s inventions in cost minimized rocket technology are
applicable for a new commercially optimized European Satellite Launch Vehicle for European
Space Agency.
This is the report for Phase I (1972) and Phase II (1973) of this work, which was performed
together with the German government DLVLR Lampoldshausen Rocket Test Facility. The work
was highly successful meeting all goals for cost reduction such as a cheap pressure fed rocket
motor of 20 000 N thrust with 99% combustion efficiency, blow-down feed of Dieseloil and
high density acid (50% N2O4, 50 % HNO3), and integrated electronics and electrical power
supply into the valve units for attitude control.
The application of these low-cost technologies would reduce the cost per kilogram payload into
orbit to one tenth of present prices. Chancellor Schmidt, who had toppled Brandt by an intrigue
in 1974, stopped further development on request of French president Giscard d’Estaing and
Kayser continued the development under private financing with newly founded Orbital
Transport und Raketen AG (OTRAG).
To keep the low-cost information from being disseminated these reports were classified by the
government and kept under key unpublished. The undersigned deems it appropriate and legally
correct after more than 40 years to make the reports (I and II) available to the interested
engineers and public. Per contract agreement Kayser retains all property rights of the
inventions.
In the meantime this unique cost-optimized rocket technology has been vastly improved by
suborbital flight qualification. Also technical advances in tank manufacturing, clustering,
ablator, valve electronics, and other details have been introduced. The whole package of
inventions and developments is available now for mass production and orbital transport To
Whom It May Concern for financing.
Dipl.Ing. Lutz Kayser www.lutzkayser@gmail.com