Especialidades JA/Botemodelismo/Requisitos

Botemodelismo

Nivel de destreza

2

Año

1991

Version

26.11.2024

Autoridad de aprobación

Asociación General

1. Hacer dos de los siguientes:

a. Comprar y construir un kit para un velero de 10 a 15 pulgadas (25 a 38 cm) de largo y unos 4 a 5 pulgadas (10 a 13 cm) de ancho y operar el barco en agua, por lo menos durante dos minutos.

b.

Build a model boat with an electric motor from your own plans or from a kit, size 10 to 18 inches, (25.4 to 45.7 cm) and operate the boat for three to five minutes.

c.

Build a model boat 18 to 30 inches (45.7 to 76.2 cm) long from your own plans or from a kit. Install a small bore internal combustion engine .029 or .049 and operate for at least two successful runs of three to five minutes each. Record in writing the operating characteristics of the model and state what you did to improve its performance.

2.

Identify and define these words:

a.

Displacement

b.

Center of gravity

c.

Propeller pitch

d.

Thrust and lift

e.

Mono hull

f.

Hydro

g.

Bow

h.

Keel

i.

Transom

j.

Cavitation

k.

Heeling

l.

Planing

m.

Drag