Assertion: aircraft engine's efficiency | /r/HasProperty | good at high speeds
Facets:
value: due to the stoichiometric combustion temperature
type: CAUSE
value: usually
type: TEMPORAL
Source sentences:
text: Due to the stoichiometric combustion temperature, efficiency is usually good at high speeds (around Mach 2–Mach 3 [680.6–1,020.9 m/s; 2,450–3,675 km/h]), whereas at low speeds the relatively poor pressure ratio means the ramjets are outperformed by turbojets, or even rockets.