Challenger 600, Tupelo, Miss., March 9, 2005–Inadequate design of the STCed microphone jack assembly, resulting in restricted aft movement of the control column, was blamed for the accident of Romeo Mike Aviation’s Challenger.
Supersonic Aerospace International (SAI) of Las Vegas said it continues to work with Lockheed Martin on the Quiet Small Supersonic Transport (QSST), the circa-$80 million, 4,000-nm, 12-passenger, Mach 1.8, no-boom supersonic business jet (SSBJ) it announced at the NBAA Convention last year.
New amendments to Part 36 require a minimum 3 dB–noise reduction for small single-engine propeller aircraft– including turboprops–weighing more than 3,307 pounds, for which an original type certificate is applied after February 3. As proposed, the new standard would have also applied to new STCs.
Gulfstream Aerospace has appointed Gerard Schkolnik as director of its supersonic technology programs. Among other projects, the former NASA engineer will work on sonic-boom suppression. Gulfstream has under study a proposed “quiet supersonic business jet.”
Gulfstream Aerospace president Bryan Moss dismissed the company’s long-discussed “Quiet Supersonic Jet” (QSJ) during last month’s EBACE, prompting the aircraft’s removal from AIN’s In the Works chart. Moss pre-empted inquiring minds at a press conference by asking and answering the question himself: “Will Gulfstream build a supersonic business jet?
Gulfstream is using this NASA F-15B to test a “telescopic quiet spike” that the company hopes will reduce the supersonic noise signature of any potential supersonic business jet. Manufactured from composite materials, the 14-foot-long spike weighs 470 pounds and extends to 24 feet in length for supersonic flight.
Supersonic transport research carried out within the European Commission’s 6th Research Framework Program has received attention since Italian manufacturer Alenia and Russian manufacturer Sukhoi signed a coop- erative agreement.
- Page 8