Iron Light - construção da seção central.

Agora a seção central, bem chatinha de fazer, tem contornos estranhos, variação grande de tamanho de perfil. Tudo que não é reto é um pouco mais trabalhoso.

As fotos dizem por si só. como é depron eu não fiz o projeto inteiro com todos os detalhes no AutoCad, então na hora vou vendo os problemas e resolvendo (para fazer os encaixes).
O único cuidado nesta hora é sempre fazer a outra peça (a simétrica, do outro lado). Então tudo o que faz, já coloca o outro perfil e copia, ou o bordo de ataque, ou fuga.

Então eu fico brincando de encaixar até tudo ficar alinhado com a planda que fica na mesa. O que vale é o contorno e planicidade.

As fotos falam por si.

Iron-light - erro no profundor - conceito !

Descobri um erro na planta, no profundor.
Da forma como foi desenhado o profundor necessitaria de dois servos - pois os eixos não estão alinhados nas duas 1/2 asas.
Então corrigi, pois serão 3 peças : 1 seção central, e 2 x pontas de asa.
Assim, o profundor tem um eixo reto único, e um único servo também.
Acho que o desenho mostra isto.

Iron-light - colando a asa.

Agora em cada peixinho tem que fazer o recorte para encaixar o bordo de ataque e as longarinas (cima e baixo).

Aqui checando se as coisas se encaixam bem :

Aqui já adicionei as pontas de asa, aileron já recortado:

EIS UMA 1/2 ASA !!

Olha como vai ficar :

Aqui os detalhes de como usar a cola quente :
Fazer pontos de colagem bem pequenos em cada junção, em toda a volta que conseguir colocar um pingo.

Finalmente, chegamos ao fim das 1/2 asas :

Olha a careta do bicho !

Tá ganhando forma !

Iron-light - continuando construção.

Bom agora já estou na fase gorda da construção. Cortar desenhar perfis no depron, cortar, fazer os recortes para bordo de ataque e longarinas, montar a asa, e colar.
Materiais :
Depron 5mm.
Cola quente.
Seguem as fotos.

Aqui desenhando os "peixinhos" no depron :

Aqui os peixinhos já cortados, em duplas. Faça sempre em duplas é o pequeno esforço que podemos fazer para tentar garantir que uma asa saia o mais parecido com a outra :

Aqui os materias da asa : peixinhos (perfis), longarinas, e bordo de ataque, e bordo de fuga (ainda sem cortar o aileron).

Iron-light - Iniciando a construção da plank Termal.

Bom, o processo que uso é o mais doméstico possível, quase nenhuma ferramenta mais profissional.

Primeiro eu faço um protótipo em bandejinha de frios, com uns 38cm de envergadura:
Cola com fita, e coloca um parafuso no nariz para dar o CG. Serve para comprovar o vôo, comprovar o CG, checar por pontos falhos, e ver a estética.

Desenho no AutoCad (única coisa decente que uso no processo).
Desenhado no AutoCad tem que imprimir. Se quiser manda imprimir fora, mas eu faço à portuguesa mesmo, desenho os retângulos das páginas para servir de guia, e imprimo no A4 e colo com fita as partes baseado nestas marcações.
Veja foto :

Agora os perfis : Primeiro colando as partes do A4 :

E depois cortando com o estilete cada perfil (coisa de louco mesmo) :

O grande desafio deste projeto é a asa ficar firme.
O perfil usado - PW1211 - é muito fino (6,9%) e isto compromete a estrutura da asa. Ainda por cima em depron, estruturada (não sólida), vai demandar uma criatividade para deixá-la firme.
Nem tanto em vôo, pois a exigência é baixa, mas no Hi-start (se for arriscar), o risco é alto de ela não aguentar.

Iron-light - Início da modelagem

Bom, do desenho artístico no Google Sketchup, parti para o AutoCad, aí a coisa muda um pouco de figura.
Alterações :

1. Pontas de asa arredondadas - quero dizer, elípticas;
2. Bordo de ataque e fuga e longarinas, de depron também.

Novo projeto- Iron-light = plank termal entelado

Novo projeto no forno.
Um termal (meeeeesmo), entelado com papel. (mão-de-vaca), vou usar depron de bandejinha para as nervuras e papel de seda para entelar.
1200mm envergadura.

Algumas imagens :

 
Alguns esclarecimentos :
Tem uma longarina claro, só não consegui desenhá-la. Vai ser de isopor P3, assim como o bordo de ataque.
Bordo de fuga em depron 5mm.
Sobre a longarina, para dar resistência, vai papel kraft com cola branca.

O perfil é o PW1211, as coordenadas podem ser descarregadas em softwares de desenho (profili, AutoCad), ou mesmo no Excell.

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