Aeronautical Engineering case studies
Aeronautical Engineering · Put your knowledge to work in context.
The Aeronautical Engineer licensure examination is the Philippine government's professional examination for entry into the regulated practice of aeronautical engineering. It is administered by the Professional Regulation Commission (PRC) through the Professional Regulatory Board for Aeronautical Engineering. The Aeronautical Engineering case studies are 5 cases and about 4,273 words.
1Take-off ground roll: six runs and one number to defend
Your company is certifying a 9-seat twin turboprop. The agreed means of compliance requires the demonstrated take-off ground roll at maximum take-off mass, sea level ISA, zero wind, to be shown below 1,250 m with 95% confidence in the true mean.
775 words, about 4 min2Envelope expansion at 250 KEAS: 2.2% damping
A twin turboprop with a design dive speed VD of 250 KEAS at 15,000 ft is in flutter envelope expansion. The agreed go/no-go criterion is that damping of the wing/aileron mode must stay at or above 3% of critical with no rapidly worsening trend; if the criterion is violated, expansion stops and the aeroelastic model is revisited.
844 words, about 4 min3EGT margin decay: 8 °C per 1,000 cycles
A 24-aircraft narrowbody fleet is powered by high-bypass turbofans. Take-off EGT margin is recorded at the same flat-rated thrust setting at each A-check.
826 words, about 4 min4Oversize fastener holes in a fracture-critical fitting
You are the stress engineer of record for a wing-to-fuselage attachment fitting on a new 19-seat commuter aeroplane. During manufacture, four fastener holes in the titanium fitting were drilled 0.40 mm oversize (6.75 mm instead of 6.35 mm); the supplier reamed them and installed the next oversize fastener.
953 words, about 5 min5A wind tunnel dataset, a foreign university and a personal cloud link
You are the lead aerodynamicist on a company-funded, military-derived unmanned aircraft. The flight control laws and control-surface geometry derive from a programme that was subject to export controls, and the company trade-compliance register classifies the aerodynamic dataset as controlled technical data.
875 words, about 4 min