nozzles - 2024 ARCADIA - Buzzpoints App

Question

Flow is directed along a wedge-shaped spike in a type of these devices called the aerospike. For 10 points each:

[10m] Name these devices that control the exit flow properties of exhaust streams from engines. Most rockets use “converging-diverging” examples of these devices named for Gustav de Laval, which narrow at the throat and then expand.

ANSWER: nozzles

[10h] The flow through a rocket nozzle is designed to achieve this specific flow condition at the throat, at which the mass flow rate is maximized and no longer increases regardless of changes in downstream conditions.

ANSWER: choked flow [or critical flow]

[10e] Nozzles achieve optimal thrust efficiency when this quantity for the exhaust stream is equal to its ambient value. According to Bernoulli’s principle, this quantity decreases as flow velocity increases.

ANSWER: pressure

<VD, Physics>

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Summary


2024 ARCADIA at BU	2024-12-06	Y	5	8.00	60%	20%	0%
2024 ARCADIA at Duke	2024-12-06	Y	3	13.33	67%	67%	0%
2024 ARCADIA at Missouri S&T	2024-12-06	Y	2	20.00	50%	50%	100%
2024 ARCADIA Online	2025-05-17	Y	5	12.00	100%	20%	0%
2024 ARCADIA at Penn State	2024-12-06	Y	2	10.00	100%	0%	0%
2024 ARCADIA at Florida Tech	2024-12-06	Y	2	15.00	100%	50%	0%
2024 ARCADIA at UC Berkeley	2024-12-06	Y	2	15.00	100%	50%	0%
2024 ARCADIA at Waterloo	2024-11-09	Y	6	11.67	83%	17%	17%
2024 ARCADIA at GT	2024-12-06	Y	5	16.00	100%	40%	20%
2024 ARCADIA at Illinois	2024-11-09	Y	4	10.00	50%	25%	25%
2024 ARCADIA at Warwick	2024-12-06	Y	5	4.00	0%	40%	0%
2024 ARCADIA at Claremont	2024-11-02	Y	3	16.67	100%	67%	0%

Data


Tufts A	Boston College B	10	0	10	20
Bowdoin A	Clark Wilson	0	0	10	10
Bowdoin B	Harvard	0	0	0	0
South Carolina	North Carolina B	10	0	10	20
North Carolina A	Virginia Tech A	0	0	0	0
Virginia Tech C	Virginia Tech B	10	0	10	20
Truman	Missouri	10	10	10	30
Squidward Community College	WashU	0	10	0	10
Toyota Tundra Turbos — Twisting Truths - Tackling Trivia - Taming Titans	ASU->Stanford->ASU pipeline	0	0	10	10
Paddington in Peru (2024)	In the Mood for Buzz	0	0	10	10
Madmen and Specialists	Old and Young	10	0	10	20
she limp on my waltz till i feel pathetique	The cult of SGA	0	0	10	10
bingy academy	Social credit go vroom	0	0	10	10
Pitt	Penn State	0	0	10	10
RIT	Maryland	0	0	10	10
UF B	UF A	10	0	10	20
UCF A	UF C	0	0	10	10
Berkeley B	Berkeley Past	0	0	10	10
Carleton A	McMaster ApocolocyntosisBidii	0	0	10	10
Ottawa Absolomabsolomabsolom	Toronto Chestnut Rice and Kamehameha	0	0	10	10
McGill A	Toronto A	0	0	10	10
Waterloo Aspidistra	Toronto B	10	10	10	30
Waterloo Basic	Toronto Metropolitan A	0	0	10	10
Waterloo Cloze	Toronto Disband the Club 2k24	0	0	0	0
Berkeley A	Stanford	10	0	10	20
Georgia Tech A	Georgia Tech C	10	0	10	20
Lambert	Georgia Tech D	0	0	10	10
Georgia Tech B	Innovation Academy A	10	10	10	30
Johns Creek	Milton	0	0	10	10
Innovation Academy B	Mississippi State	0	0	10	10
Chicago B	Chicago A	0	0	0	0
Illinois Blue	Illinois Orange	10	10	0	20
Notre Dame	SIUE	0	0	10	10
Purdue B	Purdue A	0	0	10	10
Imperial B	Bristol	10	0	0	10
Imperial A	Cambridge A	10	0	0	10
LSE B	Cambridge B	0	0	0	0
Warwick A	LSE A	0	0	0	0
Warwick B	Warwick C	0	0	0	0
ALCU	Anderson et al.	10	0	10	20
Claremont	U[C]SD	10	0	10	20
SGV Ventures	Jason et al.	0	0	10	10
Clark House	Bowdoin C	0	0	0	0
Amherst	Yale	0	0	10	10