The Evolution of Piston Aircraft Engines: Development, Performance Indicators, and Technological Advancements
31. März 2025
Über diesen Artikel
Online veröffentlicht: 31. März 2025
Seitenbereich: 1 - 26
Eingereicht: 18. Sept. 2024
Akzeptiert: 18. Jan. 2025
DOI: https://doi.org/10.2478/tar-2025-0001
Schlüsselwörter
© 2025 Jakub Pełczyński, published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Fig. 1.
![Changes in the power [hp] of aircraft engines in the period 1903–1918 [7, 12, 15, 26, 29,30,31, 33,34,35,36,37,38,39,40,41,42].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=cb9bb01abb44eb3f67326a4765ac9256d8f14b2112d4059642a9e54ca2e6790e&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 2.
![Changes in the ratio of aircraft engines’ power to their weight [hp/kg] in the period 1903–1918 [7, 12, 15, 26, 29,30,31, 33,34,35,36,37,38,39,40,41,42].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_002.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=0dd24820e2c1399e9bf52393e6dcf5cf1b564a42d6ec3b2330ef455389339d88&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 3.
![Changes in the ratio of aircraft engines’ power to their displacement volume [hp/dm3] in the period 1903–1918 [7, 12, 15, 26, 29,30,31, 33,34,35,36,37,38,39,40,41,42].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_003.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=b3845ec34ae92edaa64ae02169ce40dbc0ef3981059c54ced7522384fc5e3a17&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 4.
![Changes in maximum revolutions per minute of the crankshaft [rpm] of aircraft engines in the period 1903–1918 [7, 12, 15, 26, 29,30,31, 33,34,35,36,37,38,39,40,41,42].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_004.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=54dd2fa0410729662f92fceaed8ba1703ea64226a180c149d7a1a86e200952f4&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 5.
![Changes in power [hp] of radial and inline engines in the period 1903–1918 [7, 12, 15, 26, 29,30,31, 33,34,35,36,37,38,39,40,41,42].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_005.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=5a8fa57550b294fc29cdde487780d5f38df1359678397912f73213a6d0b29487&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 6.
![Changes in the ratio of radial and inline engines to their displacement volume [hp/dm3] in the period 1903–1918 [7, 12, 15, 26, 29,30,31, 33,34,35,36,37,38,39,40,41,42].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_006.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=75e41528a6d263dc6e98326ee22ea43d2ff0985b51c3abce710585a72c6496b6&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 7.
![Changes in the ratio of radial and inline engines’ power to their weight [hp/kg] in the period 1903–1918 [7, 12, 15, 26, 29,30,31, 33,34,35,36,37,38,39,40,41,42].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_007.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=cb19a649c0a7c8424682a12e69c3be643b8a052ad08981c7fb8e87b335171f3c&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 8.
![Changes in power [hp] of aircraft engines in the period 1918–1939 [1,2,3,4, 10– 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_008.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=18eca7e3c1e135b356c0c87f19c187d34f3ca1ab16391b2abb6f9d900591144f&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 9.
![Changes in the ratio of aircraft engines’ power to their weight [hp/kg] in the period 1918–1939 [1,2,3,4, 10, 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_009.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=ae7edd1a8b6c77ca7c3463c600ce50800ef06f424097ab433a7bfcde1b52a238&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 10.
![Changes in the ratio of aircraft engines’ power to their displacement volume [hp/dm3] in the period 1918–1939 [1,2,3,4, 10, 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_010.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=d727d317a0ae20ca312af6c3cdb6c61a2c481a10ca0f8f5c5fe4d9303022fa7b&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 11.
![Changes in maximum revolutions per minute of the crankshaft [rpm] of aircraft engines in the period 1918–1939 [1,2,3,4, 10, 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_011.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=a6c6bfdcb7945c16214f6c7e99ec4495954d4a297aae52947e9a5d213335b9fd&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 12.
![Changes in power [hp] of radial and inline engines in the period 1918–1939 [1,2,3,4, 10, 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_012.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=600e32e6dd44659d181843a33bc705c9ce2499163b36018e00c194754dbb8560&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 13.
![Changes in the ratio of radial and inline engines’ power to their weight [hp/kg] in the period 1918–1939 [1,2,3,4, 10, 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_013.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=1cf501eec639ec08383b38299303534396f42bfe4a8a3a68e6032d0337c9baaf&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 14.
![Changes in the ratio of radial and inline engines to their displacement volume [hp/dm3] in the period 1918–1939 [1,2,3,4, 10, 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_014.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=c2f5b5b285d219d1b3fecb9ec420650460203122980df55e97b4349340316f0c&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 15.
![Changes in maximum revolutions per minute of the crankshaft [rpm] of radial and inline engines in the period 1918–1939 [1,2,3,4, 10, 13,14,15,16,17, 27,28,29,30,31, 49, 51, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_015.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=ef48233393e92ee435be4a19e9b8f59007d9f311f1dd57c45814b04cface90db&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 16.
![Changes in power [hp] of aircraft engines in the period 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_016.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=2a93cdc8878d445c408281bce0a7bdad8dbd4b0b78606e090b79f265ab243515&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 17.
![Changes in the ratio of aircraft engines’ power to their weight [hp/kg] in the period 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_017.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=99cc1c156b5b7f1ec2588b67abd439d2ac9f340bf6510edccd747827452a7cd6&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 18.
![Changes in the ratio of aircraft engines’ power to their displacement volume [hp/dm3] 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_018.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=092a7ab59f67b3292ff5ca3590b509a38861fb4e14c3406610206520355193ee&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 19.
![Changes in maximum revolutions per minute of the crankshaft [rpm] of aircraft engines in the period 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_019.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=a5c9774da60cd4053df5567994b30aad8bde4df2148340498426c563965fe71f&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 20.
![Changes in power [hp] of radial and inline engines in the period 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_020.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=8fa33e76202e1b2c4d09b55769a7804fc111ce75d7058d7eb2336c4890de57ef&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 21.
![Changes in the ratio of radial and inline engines to their displacement volume [hp/dm3] in the period 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_021.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=410653af510d54abe9716854fb2aacaa6d115c550395ddfd0c68f632e7604f9b&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 22.
![Changes in the ratio of radial and inline engines’ power to their weight [hp/kg] in the period 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_022.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=d1ac9fa04f711113dca63e9bdf10a4c731417b84dc9d9cc94d4e38c668b30d82&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 23.
![Changes in maximum revolutions per minute of the crankshaft [rpm] of radial and inline engines in the period 1939–1945 [1,2,3,4,5, 14, 17, 21, 24, 28, 29, 45, 49,50,51,52, 58, 66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_023.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=efb77dabb011c83d429d19ba0e7dadd97feee13908d2b830d6a224fe3b4edb4a&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 24.
![Changes in power [hp] of aircraft engines in the years 1903–1945 [1,2,3,4,5, 7, 10, 12,13,14,15,16,17, 21, 24, 26,27,28,29,30,31, 33,34,35,36,37,38,39,40,41,42, 45, 49,50,51,52, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_024.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=f6b2dd34d87d7dc2eea326d68c22bd26bf5cefcf5e1a70e2e6545259ab2aeac3&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Fig. 25.
![Changes in the ratio of aircraft engines’ power to their displacement volume [hp/dm3] in the years 1903–1945 [1,2,3,4,5, 7, 10, 12,13,14,15,16,17, 21, 24, 26,27,28,29,30,31, 33,34,35,36,37,38,39,40,41,42, 45, 49,50,51,52, 54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70, 73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89].](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/67f6ed7c8d1bec042eaca24e/j_tar-2025-0001_fig_025.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250908%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250908T234726Z&X-Amz-Expires=3600&X-Amz-Signature=e4875df7ffc9d54a12179b4e98ce8cfa74f22263ccd957761f0e78bff38fc2f1&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Comparison of the Manly-Balzer and Wright Flyer I engines [1, 14, 16, 19–20]_
Manly-Balzer | Wright Flyer I | |
---|---|---|
52 | 16 | |
62 | 81.4 | |
8.85 | 3.28 | |
950 | 1025 | |
0.839 | 0.197 | |
5.876 | 4.878 | |
7.006 | 24.817 |