I'm sorry for my delay but I spent the weekend out
Here's the info:
1.Airfleet magazine, article from Vladimir Rigmant (can't identify the issue, the tittle is: Predecesors of the famous Blackjack).
2.Soviet Secret Projects Bombers since 1945. Buttler/Gordon
As flateric told, there are many configurations for parasite aircraft 100 but also for its carrier aicraft 108 and 109.
On 30th July 1954, the Tupolev design bureau was authorised to develop and build a strategic supersonic combined strike aircraft system. The same directive stipulated that Myasishchev to design a similar system (it seems that they research toke them to the M-50 and M-52 bombers). Official designation was "Combined Long-Range Bomber". It was to comprise the 108 carrier powered by 6 VD-5M and 100 bomber with 2 AM-11M. Expected range for the "combined" was 14000 Km. After release (well outside enemy defences) and attack, both aircraft could return to base.
Several versions for 108 aircraft were considered including one deltawinged with 4 P-8 turboprop engines and one with ramjets.
A bomber version of 108 was also considered (Initial deliveries were considered possible by 1957) while an alternative carriers for the 100 could have been the Tu-95 or Tu-96.
The 108 version powered with 4 NK-6 was choosen to go ahead in March 1956 with testing phase rescheduled for 1959. The final configuration was to be developed by Valentin Bliznyuk. Aircraft 100 manned and unmanned versions would be considered and its deffinitive powerplant was to the D-20 turbofan
The project was cancelled in 1958 with the advent of the ICBM era.
Tupolev 100 tech data
Span: 12,5 m
Lenght: 23,7 m
Max weight: 31 000 Kg
Max speed: 1500 Km/h
Bomb load: 1250 Kg