What combination of materials was famously used when constructing one of the Montgolfiers' larger balloons for structural integrity?
Answer
Thin paper attached to a light cloth frame
As the scale increased, the challenge shifted to maintaining structural integrity while keeping the envelope light enough to achieve lift. For their larger demonstration models, the brothers employed a composite structure involving two primary materials. They utilized a light cloth to serve as the primary structural framework and attachment points, while thin paper was attached or pasted onto this fabric foundation. This method allowed the paper to function as the main retainer for the heated air, leveraging the strength of the cloth for shape maintenance against the expansive forces of inflation.

Related Questions
What did the Montgolfiers initially hypothesize was the active lifting agent based on early smoke containment tests?Which material reportedly offered better containment than paper for a given weight during larger, significant experiments?What specific substance was used by the brothers to join the sheets of paper together in the construction of the envelope?During the critical public unmanned flight in Annonay in June 1783, what weight capacity did the large bag successfully demonstrate?Which three living creatures were included as passengers during the September 1783 tethered biological experiment overseen by the Académie des Sciences?What prevailing, yet ultimately incorrect, scientific concepts did the brothers initially try to align their smoke observations with?On what specific date did Jean-François Pilâtre de Rozier conduct the first untethered flight in a Montgolfier balloon?What combination of materials was famously used when constructing one of the Montgolfiers' larger balloons for structural integrity?What concept did the Montgolfiers eventually recognize as the true agent of lift, superseding their initial focus on visible smoke?What was the primary experimental focus during the final, crucial phase involving the manned flight on November 21, 1783?