New Member - San Diego - Aircraft Engine Project
Thread Starter
Staging Lane
Joined: Dec 2024
Posts: 83
Likes: 7
From: San Diego, California USA
New Member - San Diego - Aircraft Engine Project Hi, I’m a new member in sunny San Diego, California USA.
I’m working on an aircraft engine project, with the following goals / aspirations:
1) 90 degree V-8 piston engine, spark ignition, 4.4” bore spacing
2) 336.7 inches3 up to 388.4 inches3 = 4.060” bore (103.57 inches2) x 3.25” up to 3.75” stroke
3) 500 hp @ 5000 RPM (or less)
4) 250 HP (50%) 325 HP (65%) @ 3800 RPM +/- 500 RPM
5) BSFC of 0.38 pounds fuel / HP / hr (about 15:1 AFR) at 50% to 65% power
6) Two turbochargers, ideally where one could seize or explode, and the other can still work, plus electronic controlled wastegates
7) MAX altitude = 25,000 feet (about one third sea level ambient air pressure)
8) “Critical” altitude = 18,000 feet (Maximum rated power available up to… the turbos would be at maximum “boost”)
9) Intercooler(s)
10) Here’s a controversial one… SOHC… why have pushrods?
11) Gear driven items that “cannot fail”… cams, mechanical coolant pumps, mechanical fuel pumps, at least one small alternator for engine controls, prop govenor
12) Belt driven accessories - hydraulic pump, vacuum / air pump, air conditioning compressor, main alternators, any other accessories
13) reversible direction of output shaft (for counter-rotating propellers)
14) 2.2:1 reduction gear box with quill shaft
15) 650 pound target weight
16) Dry sump oil
17) two reluctor wheels, at least two Hall effect triggers for ignition
18) two ECUs (Motec M130), with comparator full FADEC
19) two plugs per cylinder
20 “Wasted spark{“ ignition coils
21) Dual throttles, dual fuel delivery systems / injectors
22) cylinders / heads with individual coolant loops - no single point cooling failure
23) more controversy - I’d like the “V” area to house the air / oil separator
24) starter / generator, gear driven - possibly brushless AC inductive, possibly 115 VAC / 400 hz
25) what ever i forgot
I’m working on an aircraft engine project, with the following goals / aspirations:
1) 90 degree V-8 piston engine, spark ignition, 4.4” bore spacing
2) 336.7 inches3 up to 388.4 inches3 = 4.060” bore (103.57 inches2) x 3.25” up to 3.75” stroke
3) 500 hp @ 5000 RPM (or less)
4) 250 HP (50%) 325 HP (65%) @ 3800 RPM +/- 500 RPM
5) BSFC of 0.38 pounds fuel / HP / hr (about 15:1 AFR) at 50% to 65% power
6) Two turbochargers, ideally where one could seize or explode, and the other can still work, plus electronic controlled wastegates
7) MAX altitude = 25,000 feet (about one third sea level ambient air pressure)
8) “Critical” altitude = 18,000 feet (Maximum rated power available up to… the turbos would be at maximum “boost”)
9) Intercooler(s)
10) Here’s a controversial one… SOHC… why have pushrods?
11) Gear driven items that “cannot fail”… cams, mechanical coolant pumps, mechanical fuel pumps, at least one small alternator for engine controls, prop govenor
12) Belt driven accessories - hydraulic pump, vacuum / air pump, air conditioning compressor, main alternators, any other accessories
13) reversible direction of output shaft (for counter-rotating propellers)
14) 2.2:1 reduction gear box with quill shaft
15) 650 pound target weight
16) Dry sump oil
17) two reluctor wheels, at least two Hall effect triggers for ignition
18) two ECUs (Motec M130), with comparator full FADEC
19) two plugs per cylinder
20 “Wasted spark{“ ignition coils
21) Dual throttles, dual fuel delivery systems / injectors
22) cylinders / heads with individual coolant loops - no single point cooling failure
23) more controversy - I’d like the “V” area to house the air / oil separator
24) starter / generator, gear driven - possibly brushless AC inductive, possibly 115 VAC / 400 hz
25) what ever i forgot