SU3JFCTi Factor*2 Fliflht Teath Number Kxtenslon
1. TherebeenalncwccaaraUtinc
oUl flight liour*. Tit* highest spaeda6 ateet. CoBparlng this Maori mirVir with these total hour*S*eh number lncraai* par flight hour. In addition toct that flight* with8 engines (noc-seary for *acn number extension! were not initiated until3 and did not Wtfln toy hours untilh* follemint' listncorporated to present those fee'ore of an unusual and perhaps lesslcr. have delayed th* projreei since
ob>rt daBage vhloh resulted in lfi engineextennive aircraft nacelle nodlfioatiens suspended all Kachflightspril andey
weather during April, Ifoy and Juno accounted fortwenty-two flight cancellations involving1 andto Kaeh number extension and flight teat).
ccident occurred tbnd as *alrorift were grounded for approximately one week. In additioneffort wan divoi-teJ fro* tlio flifchtduring the aocident Haofe number extension flights with1 andnot ros'ioBd untilune.
d.3earing foiluro on IA Juno whichin oicht enrla* remon,ls for teertnf inspection and re-test prior to re-liuUllatien. 8 equipped aircraft were groundedane for tills Inspection. J'ech numler extension flights vereuly.
*. ilraraft turn around tinefllfifais end preparation for fiVht of newly delivered aircr-ft has appeared excessive. Personnel miners and shift schedulinc has been discussed vith Kr. Ci. Johnson.
f. Top leveliftctlon of the flight test of rort has apneareci deficient in th* area* of Instruments ion plarmine and cccrdinetlemJooWwed fllfht test andproject eng-Urner-ln? and between iAcVhoed :ind Prattitney, Headquarter* has requu-ted that Mr. Jolineon
personally direct the flight test effort for an extended period.
Chlafof rattitaey also hoaea
ami uto pay extended visits to the teststart'nf this
APPROVED FOR RELEASE EATE: 7
2. There have bean2 flights (with8 engines installed) devoted to Kit oh number extension. Those flights have accumulatedours and haveuch number60 foot. (See attachments i'i and Comparing thio Kach number with these hours8 averape Hach mimber increase per flight hour. Pllcht test practice limits each extension flight to0 Mach miKber above the previous flight for general safety and aircraft stability investigation reasons. In addition to this limitation, the following list presents three areas of existing tecluiical problems which are recopnlaod as theormally encountered and which require some time and offort for their resolution therebya delaying influence;
aircraft/engine airflow natchlnt can beduring2 flight vitb tvo fully8 enginesand with fully automatic operating aircraft inlets. The firstall of the above requlreosnta wasf aircraft rl21July. Inter-related factors involved in this matching profcuen areroughness and drag, inlet controls, ejector, engine rotor speedtemperature, main fuel oontrol, and air flow distribution and Vflth the exception of aircraft roughness about which littleat this time, these factors areell defined byand substantially improved by corrective actions.
problems involve fuel and hydraulic leaks,warnings and malfunctions of instrumentation, drag chute,stability system and the inertial navigational system. Theseuncommon to other prograico yet theyelaying influence.
o. o problems involve aft.srburner liners, afterburner flaneholdsrs, plumbing, excessive oil consumption and investig-'tion and establishment of inflifht relight capability. These again are not uncommon to other programs. Corrective Actions are underway and prelioilnary interim fixes have bean expedited to the test site. Thsy are not now holding up the program but because in several instances engine removals have beena delaying Influence was inflicted, final resolution of the oil consraei>tion and afterburner liner problem*ursued concurrently in the Pratt and Whitney developtwnt pro^traic in Florida.
Hot yet experienced but nonetheless anticipated vill be thoseattendant vlth sustained flight at high Mach number an'i altitude where extreme ambientll be attained.
Chief, Aircraft 'SynteKS Division OTA/MS
O
1 A. First night xlth8 englnesi
O-63
A. First flight with8 engines!
P. Recapitulation of test-flighte devoted to Bpacd-ejrtBnalon sinee
nt BbXi
Tie.
ffbr,
February
Kerch
March
March
March
Karoh
June
July
July
July
Original document.
Comment about this article, ask questions, or add new information about this topic: