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Theoretical and Speculative Projects / Re: Yer-2 variant
« Last post by Granit on Today at 03:07:00 pm »
A special place in the history of Yer-2 is occupied by its version with a combined power plant, which included M-30B diesel engines and motor-jet engines (VRDK). Work on them was completed in 1943 at CIAM under the leadership of A.I. Tolstov. The principal feature of the VRDK was the use of a piston M-30B with a propeller as the main engines at all stages of flight, and a pair of VRDK as accelerators needed to reduce runoff or short-term increase in flight speed.

In 1944, by the decision of the State Defense Committee, A. I. Tolstov was given a corresponding task, and in May of the following year, CIAM proceeded to ground tests of the E-3130 combined power plant. Their results showed that the accelerator thrust at the nominal mode was 625 kg, and the total, taking into account the work of the ACh-30B engine, was 875 kg, while the specific fuel consumption reached 3.63 kg / kgf * h, which was almost three times higher than similar parameter to turbojets created in Germany.

From the standpoint of today, this installation on Er-2 had no prospects, since the flight speed was less than the estimated 800 km / h, which means that the real thrust of the VRDK is lower than the specified value.


From: LONG RANGE BOMBER Yer-2, Yakubovich Nikolay Vasilyevich
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The Bar / Re: A bit of robot fun
« Last post by sferrin on Today at 02:14:30 pm »
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The only thing which could have saved the F-22s from damage is pro-active infrastructure investments. Any airbase will have a fraction of planes which cannot evacuate and cannot be 'trucked' out beforehand. Knowing that and knowing how expensive fighter planes are … just build a few hardened hangers for each airbase.

Also: the USAF is going to need anti-drone protection soon anyway, might as well get started early.
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Well then perhaps there is room for a book "American secret projects: cruise missiles" in Crecy's series. The topics is truly very interesting so I guess it would have a reasonable market.

best

F_T
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Propulsion / Re: DB021 turboprop
« Last post by PlanesPictures on Today at 01:06:03 pm »
Study for a huge oil on canvas
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The Bar / Re: San Amerigo - my fictional state
« Last post by pometablava on Today at 12:56:39 pm »
Off topic threat: what if + politics
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The image shows Gabriel Poulain.
https://en.wikipedia.org/wiki/Gabriel_Poulain
Quote
Gabriel Poulain was a French champion cyclist. He made several attempts to achieve human-powered flight and in July 1921 won a prize of 10,000 francs awarded by Peugeot for a flight of ten metres at a height of one metre, on a bicycle with two wing planes in the Bois de Boulogne in Paris.
The winged bicycle was not Mr Peugeot's design.

A little more on M Poulain's aerial exploits - from The Aeroplane of 22 June 1921.
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Naval Projects / Re: NSSN Virginia-class - current status and future
« Last post by bobbymike on Today at 11:56:02 am »
https://news.usni.org/2018/10/19/analysis-of-navy-shipbuilding-plan-hints-at-return-to-blue-sea-great-power-competition?fbclid=IwAR0tKJVKVAQu-2OKocVkRG_6t9zKDX7JY3vZaZMqXdPy_39_SEZq64Y6Dn8

Quote
The Navy’s next class fast attack submarine will be designed for a return to blue-water great power competition, where the ability to support forces ashore is less important than operating in the open ocean hunting rival submarines, according to an analysis of the Navy’s 30 Year shipbuilding plan conducted by Congressional Budget Office (CBO).

The Navy plans to start purchasing this new class of submarine in 2034. Previously the SSN(X) class were assumed to be a successor to the current Virginia-class submarine, complete with the Virginia Payload Module (VPM) – a vertical launch system that increases the number of Tomahawk-sized weapons from 12 to 40 – and other acoustic and technological design improvements, according to the CBO analysis released Thursday.
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The Bar / Re: The Right Stuff - For one day only
« Last post by CJGibson on Today at 11:49:44 am »
Aye, good job I've seen it before.

No intermission. I'm gonna need a bigger boat(le)

Chris
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Early Aircraft Projects / Re: Projects in Switzerland
« Last post by Kuno on Today at 11:15:30 am »
...I am focusing on the SB-2 at present. The target is to have its full story published in a little book in the first half of 2019... still a far way to go...
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