NSF award 2622469 · University of South Carolina at Columbia

Collaborative Research: Unsteady Multiphase Dynamics of Droplet Impact and Fragmentation on Rotating Airfoils: Experiments and High-Fidelity Simulations

Final report due

28 October 2029

in 1,106 days · The award ends on 30 June 2029.

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Decide about an extension2 Mar 2029in 866 days
award ending 2029-06-30 · Research.gov
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Extension request16 May 2029in 941 days
award ending 2029-06-30 · Research.gov
PAPPG 24-1: “at least 45 days prior to the end date”
No-cost extension notice20 Jun 2029in 976 days
award ending 2029-06-30 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due28 Oct 2029in 1106 days
award ending 2029-06-30 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due28 Oct 2029in 1106 days
award ending 2029-06-30 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out28 Oct 2029in 1106 days
award ending 2029-06-30 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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NSF lists this award's end date as 30 June 2029.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 28 October 2029.

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Award card

Award number: 2622469
Period of support: 15 Jul 2026 – 30 Jun 2029
Amount: $267,000
Awardee: University of South Carolina at Columbia, Columbia, SC
Program: FD-Fluid Dynamics
Directorate: ENG

Abstract

This project will investigate what happens when raindrops strike rapidly spinning aircraft propellers. Small, unmanned aircraft are increasingly used for tasks such as environmental monitoring, infrastructure inspection, agriculture, disaster response, and public safety. However, their performance can be significantly degraded during rainfall because water droplets impact the propeller blades, spread into thin…

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