Question

Modeling these devices with a horseshoe vortex inaccurately implies there is uniform circulation. For 10 points each:
[10m] Name these devices that have positive camber if their top end is more curved than the bottom. The effectiveness of these devices decreases if their angle of attack is too high.
ANSWER: aerofoils [or airfoils or airplane wings; prompt on airplanes]
[10e] During a stall, the aerofoil’s coefficient of this force drops precipitously. The Bernoulli principle explains how this force is generated by a pressure difference on both sides of an airplane wing.
ANSWER: lift [accept lift coefficient]
[10h] The lift on an aerofoil equals circulation times rho-infinity v-infinity, per a theorem named for this man and Nikolai Joukowski. This man is the second namesake of a fourth-order method of solving ODEs that incorporates the initial, final, and two midpoint slopes.
ANSWER: Martin Kutta [accept Kutta–Joukowski theorem or fourth-order Runge–Kutta methods]
<Physics>

Back to bonuses

Summary

2024 ACF Winter at UC Berkeley2024-11-16Y320.0067%100%33%
2024 ACF Winter at Clemson2024-11-16Y816.2588%38%38%
2024 ACF Winter at Northwestern2024-11-16Y920.0089%67%44%
2024 ACF Winter at Ohio State2024-11-16Y715.7186%43%29%
2024 ACF Winter at Online2024-11-16Y813.7588%38%13%
2024 ACF Winter at UBC2024-11-16Y316.67100%33%33%

Data

Berkeley BBerkeley A100010
Stanford AStanford L1010020
Berkeley CStanford M10101030
Georgia AAlabama A0000
Auburn AGeorgia Tech D10101030
Clemson ATennesse B010010
Emory AAuburn C010010
Georgia Tech BGeorgia Tech E10101030
Auburn BGeorgia Tech F1010020
South Carolina AEmory B0101020
Tusculum AGeorgia Tech C010010
UIUC BIndiana B10101030
MiamiPurdue B010010
Northwestern AUIUC C10101030
Notre DameIndiana A1010020
WashU BPurdue A10101030
Purdue CUChicago A010010
Purdue DWashU D100010
UChicago BSIUE A0101020
WashU CUIUC D1010020
CWRU A (UG)CWRU C (UG)1010020
Kenyon AOSU C010010
Michigan State AMichigan A10101030
Michigan BCWRU D (DII)010010
Michigan C (UG)Michigan State C (UG)010010
CWRU B (UG)Michigan D (DII)0000
Pitt AOhio State A (UG)10101030
ArkansasTexas B010010
Vassar ACentral Oklahoma0101020
Texas AColorado College1010020
IowaTexas D010010
NYU BMcGill E010010
MissouriMississippi State100010
Oregon StateOle Miss010010
NYU ATexas C1010020
UW BAlberta1010020
UBC BSFU010010
UW AUBC A0101020