Hydrogen peroxide helicopter

The rocket launchers and their payloads have
streamlined shape to reduce their aerodynamic drag.
Large, low density payload, such as a large telescope
or a large greenhouse cannot be transported by the
launcher because it generates too much drag. Air
breathing engines and stratospheric balloons have
been used to reduce the problem, but they are far
from perfect. Air breathing engines are expensive,
have low thrust-to-weight ratio (about 8) and they
overheat in very thin air. Stratospheric balloons
are cheap but not reusable.

I believe that the best solution is to replace the
first stage of the rocket launcher with a helicopter
powered by hydrogen peroxide monopropellant turbines.
The turbines are placed in the tips of the helicopter
blades, so the propellant is compressed by the
centrifugal force like the roton propellant. The
helicopter flies through the atmosphere slowly, so
the aerodynamic drag of its rocket stages and its
payload can be ignored even if their shapes are not
streamlined. 90% hydrogen peroxide has density of
1400 kg/m^3, specific impulse of 148 seconds at sea
level, and exhaust gas temperature of 1015 K.