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Volume 10
Issue 1
10.3390/aerospace10010074
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Article
Peer-Review Record

Sensitivity Analysis of Wing Geometric and Kinematic Parameters for the Aerodynamic Performance of Hovering Flapping Wing

Aerospace 2023, 10(1), 74; https://doi.org/10.3390/aerospace10010074
by Xinyu Lang 1,2,3, Bifeng Song 1,2,3, Wenqing Yang 1,2,3, Xiaojun Yang 1,2,3,* and Dong Xue 1,2,3
Reviewer 1:
Loan Thi Kim Au
Reviewer 2: Anonymous
Aerospace 2023, 10(1), 74; https://doi.org/10.3390/aerospace10010074
Submission received: 23 November 2022 / Revised: 26 December 2022 / Accepted: 7 January 2023 / Published: 10 January 2023
(This article belongs to the Special Issue Flapping Wing MAV Mechanism, Control and Applications)

Round 1

Reviewer 1 Report


Comments for author File: Comments.pdf

Author Response

Please see the attachment.

 

Author Response File: Author Response.pdf

Reviewer 2 Report

The paper provides a comprehensive analytical approach for understanding effect of geometric and kinematic parameters on flapping wing lift and power requirements. It is a useful study for FWMAV designers. Below are some specific comments for consideration:

1) Eq 17-26 - Please mention reference leading to choice of said coefficients

2) Line 224 - "The cycle averaged inertia power will be zero" - would be good to mention the effect of wing flexibility on inertia power simplification

3) Line 280 - "remarkable flexibility" - suggest rewording to - this study may be limited to application of flapping wings with high rigidity

4) Line 286 -  "the increase of lift appears to be more gentle when the AR is large." - authors can provide more insight on this since Eq.36 suggests linear relationship with AR. Where does non-linearity kick in from the analytical expressions?

5) r2 discussion - the authors could condense this section to keep it focused since it is understood by definition that r2 growth is maximum by moving cmax to the tip.

6) Line 420 - "a non linear relationship can be found between r2 and lift" - please refer to Eq. 36 that can be used to justify this point. 

Author Response

Please see the attachment.

 

Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Although preferring non-dimensional aerodynamic quantities, I see that the authors have their own viewpoints. I am satisfied with authors' responses and the revised manuscript is sufficiently improved for publication.  

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