Recent content by mvdmitri

Technical proposal to build a fast aircraft with afterburning motorjet using Wright R-1820 engine. Study of Jet-Propulsion System Comprising Blower, Burner, and Nozzle https://digital.library.unt.edu/ark:/67531/metadc62460/m2/1/high_res_d/19930093531.pdf NACA Investigation of a...

This may explain why by 1945 aircraft piston engines where great, but already totally defeated by first imperfect turbojets. As aircraft goes beyond approximately Mach 0.65 the required power goes up exponentially. Also propeller efficiency drops down quickly. Piston engine rejects to cooling...

Evaporating cooling system requires additional water tank with almost two times more volume than gas tank. As a result, aircraft range at maximum speed will be 3 times less. Compressed air flow through radiator is already present at high flight speed. Adding fan in front of radiator can boost...

How Water-Injection Cooling Enables Race Planes - Tested.com Evaporative Cooling 1 Evaporative Cooling 2 During 8 minute race at 500 mph aircrafts consume about a gallon of avgas every 8.5 seconds and a gallon of cooling water every 5 seconds. It seems that a better solution could be...

Technical manual of the fastest passenger turboprop aircraft Tupolev-114. Normal cruising speed -750 km/h, maximum cruising speed - 821 km/h at 9000 m:

Steam turbine propeller driven aircraft, airboat and train were patented in 1920s-1930s by German inventor Rudolf Wagner. Steam turbine propeller drive had power 1000-3000 hp depending on steam parameters. Most interest interesting applications of this powerplant were high speed airboat and...

Steam turbine aircraft turbochargers and auxiliary drives: US2233031 Aircraft powerplant supercharger with the steam turbine and steam condenser radiator https://patentimages.storage.googleapis.com/ca/83/20/557106562193d7/US2233031.pdf US2159758A United States Power plant - steam assisted...

Very good article on Meredith jet effect calculation for high altitude piston propeller aircrafts: http://www.arpnjournals.org/jeas/research_papers/rp_2016/jeas_0316_3840.pdf http://www.arpnjournals.org/jeas/research_papers/rp_2016/jeas_0416_3963.pdf...

Liquid metals(molten sodium, potassium and mercury) and high boiling temperature organic liquids were also studied for closed Rankine cycle aerial vehicles propulsion. https://archive.org/download/DTIC_AD0864962/DTIC_AD0864962.pdf A study of various advanced powerplants for a large helicopter...

Interesting 1992 concept propeller aircraft based on turbocompound opposed piston variable cycle very high compression ratio diesel engine (Jumo design) with the ducted fan intercooler. 'A preliminary design and analysis of an advanced heat-rejection system for an extreme altitude advanced...

This plan was not digitized. It is 1946 technical report of German engineer Egon Scheibe for the OKB-5 technical bureau in Russian city Samara. Engine probably was not feasible. At 6000 rpm and 4000 hp two stroke air cooled diesel had to have weight just over 1000 kg. This is closer to turboprop...

From: Tails Through Time: The PT1: Pratt & Whitney's First Turbine Engine " The PT1: Pratt & Whitney's First Turbine Engine Animation showing the operation of a free piston turbine engine Most airborne turbine development during the Second World War wasn't focused at first on jet engines but...

Free piston gas generator/exhaust gas turbine powerplants for transport military aircraft were studied in 1930-1940s. This powerplant could work on heavy oil fuels and coal dust, had efficiency of a turbodiesel and relatively low weight. At 500 mph and altitude 35,000-50,0000 ft calculated...

There were many aircraft motorjet projects with gasoline and kerosine piston engines, and more recently with high power density rotary Wankel engines. The largest 4000 hp motorjet engine that was partially built in 1946-1947, but soon abandoned in favor of turbojets, was Soviet 032(R-130). It...

Study of Jet-Propulsion System Comprising Blower, Burner, and Nozzle - year 1944 https://digital.library.unt.edu/ark:/67531/metadc62460/m2/1/high_res_d/19930093531.pdf Analytical Theory of the Campini Propulsion System - year 1945...