(b)
Unsupercharged engines and engines incorporating a gear-driven single-speed super-charger.For engines notincorporating a supercharger andfor enginesincorporating a gear-driven single-speed supercharger the applicant must conduct the following runs :
(1)
A 30-hour run consisting of alternate periods of 5 minutes at rated takeo. power with takeo. speed, and 5 minutes at maximum best economy cruising power or maximum recommended cruising power.
(2)
A20-hour run consistingof alternateperiods of11/2hours at rated maximum continuouspower with maximum continuous speed, and1/2hour at75percent rated maximum continuouspower and91percent maximum continuous speed.
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Elodie Roux. Septembre 2003
Subpart D : Block Tests; Reciprocating Aircraft Engines
(3)
A20-hour run consistingof alternateperiods of11/2hours at rated maximum continuouspower with maximum continuous speed, and1/2hour at70percent rated maximum continuouspower and89percent maximum continuous speed.
(4)
A20-hour run consistingof alternateperiods of11/2hours at rated maximum continuouspower with maximum continuous speed, and1/2hour at65percent rated maximum continuouspower and87percent maximum continuous speed.
(5)
A 20-hour run consisting of alternate periods of 1 1/2 hours at rated maxi-mum continuouspower with maximum continuous speed, and1/2hour at60 percent rated maximum continuous power and 84.5 percent maximum conti-nuous speed.
(6)
A 20-hour run consisting of alternate periods of 1 1/2 hours at rated maxi-mum continuouspower with maximum continuous speed, and1/2hour at50 percent rated maximum continuous power and 79.5 percent maximum conti-nuous speed.
(7)
A 20-hour run consisting of alternate periods of 2 1/2 hours at rated maxi-mum continuouspower with maximum continuous speed, and21/2hours at maximumbest economy cruisingpower or at maximum recommended cruising power.
(c) Engines incorporating a gear-driven two-speed supercharger. For engines incorpora-ting agear-driventwo-speed superchargerthe applicant must conduct thefollowing runs :
(1)
A30-hourrunconsisting of alternateperiodsinthelowergearratioof .vemi-nutesat rated takeo.powerwith takeo.speed,and .veminutesat maximum best economy cruising power or at maximum recommended cruising power. If a takeo. power rating is desired in the higher gear ratio, 15 hours of the 30-hourrunmustbemadeinthehighergearratioinalternateperiodsof .ve minutes at the observed horsepower obtainable with the takeo. critical alti-tudemanifoldpressureand takeo.speed,and .veminutesat70percenthigh ratio rated maximum continuous power and 89 percent high ratio maximum continuous speed.
(2)
A 15-hour run consisting of alternate periods in the lower gear ratio of one hour at rated maximum continuous power with maximum continuous speed, and1/2hour at75percent rated maximum continuouspowerand91percent maximum continuous speed.
(3)
A 15-hour run consisting of alternate periods in the lower gear ratio of one hour at rated maximum continuous power with maximum continuous speed, and1/2hour at70percent rated maximum continuouspowerand89percent maximum continuous speed.
(4)
A 30-hour run in the higher gear ratio at rated maximum continuous power with maximum continuous speed.
(5)
A 5-hour run consisting of alternate periods of .ve minutes in each of the supercharger gear ratios. The .rst .ve minutes of the test must be made at maximum continuous speed in the higher gear ratio and the observed horse-power obtainable with 90 percent of maximum continuous manifold pressure in thehighergear ratio under sealevel conditions.The conditionfor operation forthealternate .veminutesinthelowergearratiomustbethatobtainedby shifting tothelowergear ratio at constant speed.
(6)
A 10-hour run consisting of alternate periods in the lower gear ratio of one hour at rated maximum continuous power with maximum continuous speed, and onehour at65percent rated maximum continuouspowerand87percent maximum continuous speed.
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本文链接地址：FAA规章 美国联邦航空规章 Federal Aviation Regulations 5(131)
