"Krztalizer" wrote in message
...
Is it similar to the one fitted on an experimental Me262C-1a flown
by Heinz
Bar (III./EJG 2 march 1945) depicted as profile #7 in Osprey's
German Jet
Aces of WW2. ?

That particular aircraft/motor combination did not work out too
well. This
configuration was the proposed motor for the production version of
the "Home
Defense Interceptor" took into account various fixes that, it was
hoped, would
keep the damn thing from igniting the entire tail while in
operation.

G

I have a picture of an NF104 starfighter with an rocket motor in an
extension where you would expect to find a drag shute. It apparently
used to climb to 130,000 ft and there by controlled by a reaction
control system while it might find itself in zero G for 1 minute.
There was also a Saunder Roe Jet/Rocket interceptor.

Rocket supplemented jets I think considered seriously by everyone at
some stage. Advances in jet engine power to weight ratio and
afterburners probably obviating the need for the complexity for rocket
boosters. Still the climb performance of these rocket experimental
1940s/1950s planes was spectacular: matching that of the supersonic
interceptors the 60s and 70s.

One of the more interesting pieces of German WW2 work was the BMW003R.
This was essentially a BMW003 turbojet (800kg thrusts) with an
strengthened accessories drive to extract 200hp for powering
centrifugal propellant pumps via clutches for the hypergolic
propellants into a rocket chamber mounted at the rear.

The rocket chamber and accessories for an additional rocket thrust of
1250kg only added 80kg to the 600kg BMW003 and the chamber is tiny:
fitting onto the tail of the jet.

A Me 262C-2b fitted with two of these BMW003R's and a 1000kg faired
belly drop tank could perform a 140 second burn and reach 10000m in
less than 1 minute 55 seconds and have a range of 1700km overall.
The ultimate aim was to use tri-propellants: 2 hypergolics for
ignition and oxidant plus the standard fuel supply.

The Me 262C-2b with BMW003R was an alternative to the Me 262C-1a
which had standard Jumo 004B engines and a completely separate rocket
motor in a modified tail. (which the preceing post was about)

The BMW003R was also to be fitted to the Me162 salamander/volksjaeger
which was expected to go from a standing start to 10,000m in 2 minutes
50 seconds.


I suspect for the Germans who had a need to perform rapid
interceptions while evading interception themselves at takeoff and
climb it must have seemed a good idea.

The Focke Wulf TA183 which inspired the Mig 15 had provision in the
design for supplemental rocket boosting.